API do NuGet no Visual Studio

Artigo
02/07/2024

Além da interface do usuário e do Console do Gerenciador de Pacotes no Visual Studio, o NuGet também exporta alguns serviços úteis que podem ser usados por outras extensões. Essas interfaces permitem que outros componentes no Visual Studio interajam com o NuGet, o que pode ser usado para instalar e desinstalar pacotes e para obter informações sobre os pacotes instalados.

O NuGet fornece serviços por meio de duas tecnologias diferentes, cada uma com suas interfaces definidas em um pacote NuGet diferente. Os serviços mais antigos do NuGet estão disponíveis por meio do Managed Extensibility Framework (MEF), que estão disponíveis no pacote NuGet.VisualStudio (vá para os serviços MEF do NuGet). Há APIs mais recentes, projetadas para serem utilizáveis com código async, disponíveis no pacote NuGet.VisualStudio.Contracts, usando um IServiceBroker do Visual Studio (vá para Serviços agenciados do NuGet).

Versões do pacote

O produto do NuGet segue a versão do Visual Studio, mas está 11.0 versões atrás. Por exemplo, o NuGet 6.0 corresponde ao Visual Studio 2022 17.0, o NuGet 5.11 corresponde ao Visual Studio 2019 16.11 e assim por diante.

Com o Visual Studio 17.1, os pacotes de API de extensibilidade do Visual Studio do NuGet correspondem à versão do Visual Studio que as APIs estão direcionando. Por exemplo, o pacote NuGet.VisualStudio e NuGet.VisualStudio.Contracts versão 17.1.0 deve ser usado quando sua extensão tem como destino o Visual Studio 17.1 e superior. No Visual Studio 17.0 e versões anteriores, as versões de pacote do NuGet são as mesmas que a versão do produto do NuGet. Por exemplo, se sua extensão tem como destino o Visual Studio 2022 versão 17.0, você deve usar a versão 6.0 dos pacotes de extensibilidade do Visual Studio do NuGet.

SDK do cliente do NuGet em extensões do Visual Studio

Somente as APIs em NuGet.VisualStudio e NuGet.VisualStudio.Contracts são compatíveis com extensões do Visual Studio. O NuGet fornece redirecionamentos de associação para esses assemblies, portanto, esses assemblies não precisam ser incluídos em sua extensão.

O uso de pacotes do SDK do cliente do NuGet, por exemplo, NuGet.Protocol, não tem suporte nas extensões do Visual Studio. O NuGet não fornece redirecionamentos de associação para esses assemblies. Confira a política de suporte do SDK do cliente do NuGet para obter mais informações.

Services List

Serviço agenciados

Esses serviços estão disponíveis no pacote NuGet.VisualStudio.Contracts.

INuGetProjectService: métodos para interagir com um projeto. (5.7+)

Serviços MEF

No NuGet 6.0, todas essas APIs estão disponíveis no pacote NuGet.VisualStudio. No NuGet 5.11 e versões anteriores, as APIs no namespace NuGet.VisualStudio estão disponíveis no pacote NuGet.VisualStudio e as APIs no namespace NuGet.SolutionRestoreManager estão disponíveis no pacote NuGet.SolutionRestoreManager.Interop.

NuGet.VisualStudio

IRegistryKey: o método para recuperar um valor de uma subchave de registro. (3.3+)
IVsCredentialProvider Contém métodos para obter credenciais para operações NuGet. (4.0+)
IVsFrameworkCompatibility Contém métodos para descobrir estruturas e compatibilidade entre estruturas. (4.0+)
IVsFrameworkCompatibility2 Contém métodos para descobrir estruturas e compatibilidade entre estruturas. (4.0+)
IVsFrameworkCompatibility3 Contém métodos para descobrir estruturas e compatibilidade entre estruturas. (5.8+)
IVsFrameworkParser Uma interface para lidar com a conversão entre sequências e FrameworkName (4.0+)
IVsFrameworkParser2 Uma interface para analisar as sequências do .NET Framework. Consulte NuGet-IVsFrameworkParser. (5.8+)
IVsGlobalPackagesInitScriptExecutor Execução de scripts powershell com o(s) pacote(s) em uma solução (4.0+)
IVsPackageInstaller: métodos para instalar os pacotes do NuGet em projetos. (3.3+)
'IVsPackageInstaller2 Contém o método para instalar a versão mais recente de um único pacote em um projeto dentro da solução atual.
IVsPackageInstallerEvents: eventos para instalar/desinstalar o pacote. (3.3+)
IVsPackageInstallerProjectEvents: eventos de lote para instalar/desinstalar o pacote. (3.3+)
IVsPackageInstallerServices: métodos para recuperar pacotes instalados na solução atual e para verificar se determinado pacote está instalado em um projeto. (3.3+)
IVsPackageManagerProvider: os métodos para fornecer sugestões alternativas do Gerenciador de Pacotes para um pacote do NuGet. (3.3 - 5.11)
IVsPackageRestorer: métodos para restaurar os pacotes instalados em um projeto. (3.3+)
IVsPackageSourceProvider: métodos para recuperar uma lista de origens de pacotes do NuGet. (3.3+)
IVsPackageUninstaller: métodos para desinstalar os pacotes do NuGet de projetos. (3.3+)
IVsPathContext Informações de caminho do NuGet específicas para o contexto atual (por exemplo, contexto do projeto). (4.0+)
IVsPathContext2 Informações de caminho do NuGet específicas para o contexto atual (por exemplo, contexto do projeto). (5.0+)
IVsPathContextProvider Um alocador para inicializar instâncias IVsPathContext. (4.0+)
IVsPathContextProvider2 Um alocador para inicializar instâncias IVsPathContext2. (5.0+)
IVsProjectJsonToPackageReferenceMigrator Contém métodos para migrar um projeto herdado baseado em project.json para um projeto baseado em PackageReference. (4.3+)
IVsSemanticVersionComparer Uma interface para comparar duas sequências de versão opacas, tratando-as como semântica NuGet (4.0+)
IVsNuGetProjectUpdateEvents (6.2+)

NuGet.SolutionRestoreManager

Essas interfaces são projetadas para que os sistemas de projeto interajam com o NuGet, permitindo que o sistema do projeto notifique o NuGet sobre alterações em PackageReferences e organize atualizações em lote. As extensões do Visual Studio que não são sistemas de projeto provavelmente não se beneficiarão dessas APIs.

IVsSolutionRestoreService (4.0+)
IVsSolutionRestoreService2 (4.3+)
IVsSolutionRestoreService3 (5.1+)
IVsSolutionRestoreService4 (6.0+)
IVsSolutionRestoreStatusProvider (6.0+)

Uso dos serviços do NuGet

Aviso

Não use nenhum outro tipo além das interfaces públicas no seu código e não faça referência a outros assemblies do NuGet, incluindo NuGet.Protocol.dll, NuGet.Frameworks.dll e assim por diante.

Para maximizar as promessas de compatibilidade com versões anteriores que fazemos, mas também fornecendo a nós mesmos a flexibilidade para implementar novos recursos, melhorias de desempenho e correções de bugs no Visual Studio, não oferecemos suporte ao SDK do Cliente do NuGet que está sendo usado no Visual Studio e não fornecemos redirecionamentos de associação em devenv.exe.config para assemblies diferentes de nossos contratos de extensibilidade do VS.

Se você quiser uma nova API relacionada ao NuGet no Visual Studio, pesquise o repositório NuGet’s Home e vote a favor de quaisquer problemas existentes se encontrar um semelhante. Se você não conseguir encontrar uma solicitação de recurso existente para votar a favor, crie uma.

Serviço agenciados

Instale o pacote NuGet.VisualStudio.Contracts em seu projeto, assim como Microsoft.VisualStudio.SDK.

Use o IAsyncServiceProvider para obter o service broker do Visual Studio e use-o para obter o serviço do NuGet. Observe que AsyncPackage estende IVsAsyncServiceProvider2, para que sua classe que implementa AsyncPackage possa ser usada como o IAsyncServiceProvider. Veja também os documentos em IBrokeredServiceContainer e IServiceBroker

// Your AsyncPackage implements IAsyncServiceProvider
IAsyncServiceProvider asyncServiceProvider = this;
var brokeredServiceContainer = await asyncServiceProvider.GetServiceAsync<SVsBrokeredServiceContainer, IBrokeredServiceContainer>();
var serviceBroker = brokeredServiceContainer.GetFullAccessServiceBroker();
var nugetProjectService = await serviceBroker.GetProxyAsync<INuGetProjectService>(NuGetServices.NuGetProjectServiceV1);

Quando seu código não precisar mais do serviço agenciado do NuGet, descarte-o. Por exemplo, se você precisar apenas do serviço agenciado do NuGet durante uma única chamada de método, poderá empacotá-lo em uma instrução C#using:
```
InstalledPackagesResult installedPackagesResult;
using (nugetProjectService as IDisposable)
{
    installedPackagesResult = await nugetProjectService.GetInstalledPackages(projectGuid, cancellationToken);
}
```

Serviços MEF

Instale o pacote NuGet.VisualStudio no seu projeto, que contém o assembly NuGet.VisualStudio.dll.

No NuGet 5.11 e versões anteriores, o pacote define automaticamente a propriedade dos Tipos de Interoperabilidade Inseridos da referência de assembly para True. A política do Visual Studio 2022 em relação aos tipos de interoperabilidade inseridos foi alterada, portanto, o pacote NuGet.VisualStudio versão 6.0.0 e superior não usa mais isso.

Para usar um serviço, importe-o por meio do atributo Import MEF ou por meio do serviço IComponentModel.

//Using the Import attribute
[Import(typeof(IVsPackageInstaller2))]
public IVsPackageInstaller2 packageInstaller;
packageInstaller.InstallLatestPackage(null, currentProject,
    "Newtonsoft.Json", false, false);

//Using the IComponentModel service
var componentModel = (IComponentModel)GetService(typeof(SComponentModel));
IVsPackageInstallerServices installerServices =
    componentModel.GetService<IVsPackageInstallerServices>();

var installedPackages = installerServices.GetInstalledPackages();

Para referência, o código-origem do NuGet.VisualStudio está contido dentro do repositório NuGet.Clients.

Noções básicas sobre os sistemas de projeto .NET

Quando projetos de estilo SDK foram adicionados para o .NET Core 1.0, ele foi projetado para ser mais assíncrono do que os sistemas de projeto anteriores do Visual Studio. Isso tem um impacto sobre como todos os outros componentes do Visual Studio interagem com ele diretamente ou por meio de outros componentes, como o NuGet. Isso é mais perceptível na carga da solução e na carga do projeto, onde os projetos não estão totalmente disponíveis algum tempo depois que as notificações de API síncronas mais antigas do Visual Studio já foram acionadas.

Durante o carregamento da solução, o NuGet ignora o IVsSolutionEvents.OnAfterProjectLoad, para evitar atrasar a parte síncrona da carga da solução. O NuGet sincronizará suas estruturas de dados internas após a conclusão da parte síncrona da carga da solução. Isso também é verdadeiro para projetos de estilo não-SDK.

Mesmo depois que todos os manipuladores de eventos IVsSolutionEvents.OnAfterSolutionLoad forem concluídos, isso sinalizará apenas o fim da parte síncrona da carga da solução. A parte assíncrona da carga da solução ainda está em andamento. Portanto, se sua extensão chamar APIs do NuGet, como GetInstalledPackagesAsync ou InstallPackage, logo após o carregamento do projeto ou da solução, o NuGet poderá lançar um InvalidOperationException com mensagem semelhante a "A operação falhou, já que detalhes do projeto {project name} não puderam ser carregados".

Quando uma solução contém pelo menos um projeto de estilo SDK, o NuGet executará automaticamente uma restauração após o carregamento da solução, e você não deverá chamar nenhuma API do NuGet até que isso seja concluído. Você pode usar IVsNuGetProjectUpdateEvents para obter uma notificação quando a restauração da solução for concluída ou quando o projeto específico for restaurado. Se uma solução não contiver nenhum projeto de estilo SDK, a restauração não será agendada automaticamente e pode não acontecer até que uma compilação seja agendada.

Para determinar se um projeto usa o fluxo assíncrono do NuGet (projeto de estilo SDK), use PackageUtilities.IsCapabilityMatch com a expressão CPS + PackageReference.

Interface INuGetProjectService

    /// <summary>Service to interact with projects in a solution</summary>
    /// <remarks>This interface should not be implemented. New methods may be added over time.</remarks>
    public interface INuGetProjectService
    {
        /// <Summary>Gets the list of packages installed in a project.</Summary>
        /// <param name="projectId">Project ID (GUID).</param>
        /// <param name="cancellationToken">Cancellation token.</param>
        /// <returns>The list of packages in the project.</returns>
        Task<InstalledPackagesResult> GetInstalledPackagesAsync(Guid projectId, CancellationToken cancellationToken);
    }

Interface IRegistryKey

/// <summary>
/// Specifies methods for manipulating a key in the Windows registry.
/// </summary>
public interface IRegistryKey
    {
    /// <summary>
    /// Retrieves the specified subkey for read or read/write access.
    /// </summary>
    /// <param name="name">The name or path of the subkey to create or open.</param>
    /// <returns>The subkey requested, or null if the operation failed.</returns>
    IRegistryKey OpenSubKey(string name);


    /// <summary>
    /// Retrieves the value associated with the specified name.
    /// </summary>
    /// <param name="name">The name of the value to retrieve. This string is not case-sensitive.</param>
    /// <returns>The value associated with name, or null if name is not found.</returns>
    object GetValue(string name);


    /// <summary>
    /// Closes the key and flushes it to disk if its contents have been modified.
    /// </summary>
    void Close();
}

Interface IVsCredentialProvider

    /// <summary>
    /// Contains methods to get credentials for NuGet operations.
    /// </summary>
    public interface IVsCredentialProvider
    {
        /// <summary>
        /// Get credentials for the supplied package source Uri.
        /// </summary>
        /// <param name="uri">The NuGet package source Uri for which credentials are being requested. Implementors are
        /// expected to first determine if this is a package source for which they can supply credentials.
        /// If not, then Null should be returned.</param>
        /// <param name="proxy">Web proxy to use when comunicating on the network.  Null if there is no proxy
        /// authentication configured.</param>
        /// <param name="isProxyRequest">True if if this request is to get proxy authentication
        /// credentials. If the implementation is not valid for acquiring proxy credentials, then
        /// null should be returned.</param>
        /// <param name="isRetry">True if credentials were previously acquired for this uri, but
        /// the supplied credentials did not allow authorized access.</param>
        /// <param name="nonInteractive">If true, then interactive prompts must not be allowed.</param>
        /// <param name="cancellationToken">This cancellation token should be checked to determine if the
        /// operation requesting credentials has been cancelled.</param>
        /// <returns>Credentials acquired by this provider for the given package source uri.
        /// If the provider does not handle requests for the input parameter set, then null should be returned.
        /// If the provider does handle the request, but cannot supply credentials, an exception should be thrown.</returns>
        Task<ICredentials> GetCredentialsAsync(Uri uri,
            IWebProxy proxy,
            bool isProxyRequest,
            bool isRetry,
            bool nonInteractive,
            CancellationToken cancellationToken);
    }

Interface IVsFrameworkCompatibility

    /// <summary>
    /// Contains methods to discover frameworks and compatibility between frameworks.
    /// </summary>
    public interface IVsFrameworkCompatibility
    {
        /// <summary>
        /// Gets all .NETStandard frameworks currently supported, in ascending order by version.
        /// </summary>
        /// <remarks>This API is <a href="https://github.com/microsoft/vs-threading/blob/main/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded.</a></remarks>
        IEnumerable<FrameworkName> GetNetStandardFrameworks();

        /// <summary>
        /// Gets frameworks that support packages of the provided .NETStandard version.
        /// </summary>
        /// <remarks>
        /// The result list is not exhaustive as it is meant to human-readable. For example,
        /// equivalent frameworks are not returned. Additionally, a framework name with version X
        /// in the result implies that framework names with versions greater than or equal to X
        /// but having the same <see cref="FrameworkName.Identifier"/> are also supported.
        ///
        /// <para>This API is <a href="https://github.com/microsoft/vs-threading/blob/main/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded.</a></para>
        /// </remarks>
        /// <param name="frameworkName">The .NETStandard version to get supporting frameworks for.</param>
        [Obsolete("This API does not support .NET 5 and higher target frameworks with platforms. Use IVsFrameworkCompatibility3 instead.")]
        IEnumerable<FrameworkName> GetFrameworksSupportingNetStandard(FrameworkName frameworkName);

        /// <summary>
        /// Selects the framework from <paramref name="frameworks"/> that is nearest
        /// to the <paramref name="targetFramework"/>, according to NuGet's framework
        /// compatibility rules. <c>null</c> is returned of none of the frameworks
        /// are compatible.
        /// </summary>
        /// <remarks>This API is <a href="https://github.com/microsoft/vs-threading/blob/main/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded.</a></remarks>
        /// <param name="targetFramework">The target framework.</param>
        /// <param name="frameworks">The list of frameworks to choose from.</param>
        /// <exception cref="ArgumentException">If any of the arguments are <c>null</c>.</exception>
        /// <returns>The nearest framework.</returns>
        [Obsolete("This API does not support .NET 5 and higher target frameworks with platforms. Use IVsFrameworkCompatibility3 instead.")]
        FrameworkName GetNearest(FrameworkName targetFramework, IEnumerable<FrameworkName> frameworks);
    }

Interface IVsFrameworkCompatibility2

    /// <summary>
    /// Contains methods to discover frameworks and compatibility between frameworks.
    /// </summary>
    [Obsolete("This API does not support .NET 5 and higher target frameworks with platforms. Use IVsFrameworkCompatibility3 instead.")]
    public interface IVsFrameworkCompatibility2 : IVsFrameworkCompatibility
    {
        /// <summary>
        /// Selects the framework from <paramref name="frameworks"/> that is nearest
        /// to the <paramref name="targetFramework"/>, according to NuGet's framework
        /// compatibility rules. <c>null</c> is returned of none of the frameworks
        /// are compatible.
        /// </summary>
        /// <remarks>This API is <a href="https://github.com/microsoft/vs-threading/blob/main/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded.</a></remarks>
        /// <param name="targetFramework">The target framework.</param>
        /// <param name="fallbackTargetFrameworks">
        /// Target frameworks to use if the provided <paramref name="targetFramework"/> is not compatible.
        /// These fallback frameworks are attempted in sequence after <paramref name="targetFramework"/>.
        /// </param>
        /// <param name="frameworks">The list of frameworks to choose from.</param>
        /// <exception cref="ArgumentException">If any of the arguments are <c>null</c>.</exception>
        /// <returns>The nearest framework.</returns>
        [Obsolete("This API does not support .NET 5 and higher target frameworks with platforms. Use IVsFrameworkCompatibility3 instead.")]
        FrameworkName GetNearest(
            FrameworkName targetFramework,
            IEnumerable<FrameworkName> fallbackTargetFrameworks,
            IEnumerable<FrameworkName> frameworks);
    }

Interface IVsFrameworkCompatibility3

    /// <summary>
    /// Contains methods to discover frameworks and compatibility between frameworks.
    /// </summary>
    public interface IVsFrameworkCompatibility3
    {
        /// <summary>
        /// Selects the framework from <paramref name="frameworks"/> that is nearest
        /// to the <paramref name="targetFramework"/>, according to NuGet's framework
        /// compatibility rules. <c>null</c> is returned of none of the frameworks
        /// are compatible.
        /// </summary>
        /// <param name="targetFramework">The target framework.</param>
        /// <param name="frameworks">The list of frameworks to choose from.</param>
        /// <exception cref="ArgumentNullException">If any of the arguments are null.</exception>
        /// <exception cref="ArgumentException">If any of the frameworks cannot be parsed.</exception>
        /// <returns>The nearest framework.</returns>
        /// <remarks>This API is <a href="https://github.com/microsoft/vs-threading/blob/9f065f155525c4561257e02ad61e66e93e073886/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded</a>.</remarks>
        IVsNuGetFramework GetNearest(IVsNuGetFramework targetFramework, IEnumerable<IVsNuGetFramework> frameworks);

        /// <summary>
        /// Selects the framework from <paramref name="frameworks"/> that is nearest
        /// to the <paramref name="targetFramework"/>, according to NuGet's framework
        /// compatibility rules. <c>null</c> is returned of none of the frameworks
        /// are compatible.
        /// </summary>
        /// <param name="targetFramework">The target framework.</param>
        /// <param name="fallbackTargetFrameworks">
        /// Target frameworks to use if the provided <paramref name="targetFramework"/> is not compatible.
        /// These fallback frameworks are attempted in sequence after <paramref name="targetFramework"/>.
        /// </param>
        /// <param name="frameworks">The list of frameworks to choose from.</param>
        /// <exception cref="ArgumentNullException">If any of the arguments are null.</exception>
        /// <exception cref="ArgumentException">If any of the frameworkscannot be parsed.</exception>
        /// <returns>The nearest framework.</returns>
        /// <remarks>This API is <a href="https://github.com/microsoft/vs-threading/blob/9f065f155525c4561257e02ad61e66e93e073886/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded</a>.</remarks>
        IVsNuGetFramework GetNearest(
            IVsNuGetFramework targetFramework,
            IEnumerable<IVsNuGetFramework> fallbackTargetFrameworks,
            IEnumerable<IVsNuGetFramework> frameworks);
    }

Interface IVsFrameworkParser

    /// <summary>
    /// An interface for dealing with the conversion between strings and <see cref="FrameworkName"/>
    /// instances.
    /// </summary>
    [Obsolete("This API does not support .NET 5 and higher target frameworks with platforms. Use IVsFrameworkParser2 instead.")]
    public interface IVsFrameworkParser
    {
        /// <summary>
        /// Parses a short framework name (e.g. "net45") or a full framework name
        /// (e.g. ".NETFramework,Version=v4.5") into a <see cref="FrameworkName"/>
        /// instance.
        /// </summary>
        /// <remarks>This API is <a href="https://github.com/microsoft/vs-threading/blob/main/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded.</a></remarks>
        /// <param name="shortOrFullName">The framework string.</param>
        /// <exception cref="ArgumentNullException">If the provided string is null.</exception>
        /// <exception cref="ArgumentException">If the provided string cannot be parsed.</exception>
        /// <returns>The parsed framework.</returns>
        [Obsolete("This API does not support .NET 5 and higher target frameworks with platforms. Use IVsFrameworkParser2 instead.")]
        FrameworkName ParseFrameworkName(string shortOrFullName);

        /// <summary>
        /// Gets the shortened version of the framework name from a <see cref="FrameworkName"/>
        /// instance.
        /// </summary>
        /// <remarks>
        /// For example, ".NETFramework,Version=v4.5" is converted to "net45". This is the value
        /// used inside of .nupkg folder structures as well as in project.json files.
        /// <para>This API is <a href="https://github.com/microsoft/vs-threading/blob/main/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded.</a></para>
        /// </remarks>
        /// <param name="frameworkName">The framework name.</param>
        /// <exception cref="ArgumentNullException">If the input is null.</exception>
        /// <exception cref="ArgumentException">
        /// If the provided framework name cannot be converted to a short name.
        /// </exception>
        /// <returns>The short framework name. </returns>
        [Obsolete("This API does not support .NET 5 and higher target frameworks with platforms. Use IVsFrameworkParser2 instead.")]
        string GetShortFrameworkName(FrameworkName frameworkName);
    }

Interface IVsFrameworkParser2

    /// <summary>An interface to parse .NET Framework strings. See <a href="http://aka.ms/NuGet-IVsFrameworkParser">http://aka.ms/NuGet-IVsFrameworkParser</a>.</summary>
    public interface IVsFrameworkParser2
    {
        /// <summary>
        /// Parses a short framework name (e.g. "net45") or a full Target Framework Moniker
        /// (e.g. ".NETFramework,Version=v4.5") into a <see cref="IVsNuGetFramework"/>
        /// instance.
        /// </summary>
        /// <param name="input">The framework string</param>
        /// <param name="nuGetFramework">The resulting <see cref="IVsNuGetFramework"/>. If the method returns false, this return NuGet's "Unsupported" framework details.</param>
        /// <returns>A boolean to specify whether the input could be parsed into a valid <see cref="IVsNuGetFramework"/> object.</returns>
        /// <remarks>This API is not needed to get framework information about loaded projects, and should not be used to parse the project's TargetFramework property. See <a href="http://aka.ms/NuGet-IVsFrameworkParser">http://aka.ms/NuGet-IVsFrameworkParser</a>.<br/>
        /// This API is <a href="https://github.com/microsoft/vs-threading/blob/9f065f155525c4561257e02ad61e66e93e073886/doc/cookbook_vs.md#how-do-i-effectively-verify-that-my-code-is-fully-free-threaded">free-threaded</a>.</remarks>
        bool TryParse(string input, out IVsNuGetFramework nuGetFramework);
    }

Interface IVsGlobalPackagesInitScriptExecutor

    /// <summary>
    /// Execute powershell scripts from package(s) in a solution
    /// </summary>
    /// <remarks>Intended for internal use only.</remarks>
    public interface IVsGlobalPackagesInitScriptExecutor
    {
        /// <summary>
        /// Executes the init script of the given package if available.
        /// 1) If the init.ps1 script has already been executed by the powershell host, it will not be executed again.
        /// True is returned.
        /// 2) If the package is found in the global packages folder it will be used.
        /// If not, it will return false and do nothing.
        /// 3) Also, note if other scripts are executing while this call was made, it will wait for them to complete.
        /// </summary>
        /// <param name="packageId">Id of the package whose init.ps1 will be executed.</param>
        /// <param name="packageVersion">Version of the package whose init.ps1 will be executed.</param>
        /// <returns>Returns true if the script was executed or has been executed already.</returns>
        /// <remarks>This method throws if the init.ps1 being executed throws.</remarks>
        Task<bool> ExecuteInitScriptAsync(string packageId, string packageVersion);
    }

Interface IVsPackageInstaller

    /// <summary>
    /// Contains methods to install packages into a project within the current solution.
    /// </summary>
    [ComImport]
    [Guid("4F3B122B-A53B-432C-8D85-0FAFB8BE4FF4")]
    public interface IVsPackageInstaller
    {
        /// <summary>
        /// Installs a single package from the specified package source.
        /// </summary>
        /// <remarks>Can be called from a background thread, if the UI thread is not blocked waiting for this to finish.
        /// See <a href="https://github.com/nuget/home/issues/11476">https://github.com/nuget/home/issues/11476</a></remarks>
        /// <param name="source">
        /// The package source to install the package from. This value can be <c>null</c>
        /// to indicate that the user's configured sources should be used. Otherwise,
        /// this should be the source path as a string. If the user has credentials
        /// configured for a source, this value must exactly match the configured source
        /// value.
        /// </param>
        /// <param name="project">The target project for package installation.</param>
        /// <param name="packageId">The package ID of the package to install.</param>
        /// <param name="version">
        /// The version of the package to install. <c>null</c> can be provided to
        /// install the latest version of the package.
        /// </param>
        /// <param name="ignoreDependencies">
        /// A boolean indicating whether or not to ignore the package's dependencies
        /// during installation.
        /// </param>
        [Obsolete("System.Version does not support SemVer pre-release versions. Use the overload with string version instead.")]
        void InstallPackage(string source, Project project, string packageId, Version version, bool ignoreDependencies);

        /// <summary>
        /// Installs a single package from the specified package source.
        /// </summary>
        /// <remarks>Can be called from a background thread, if the UI thread is not blocked waiting for this to finish.
        /// See <a href="https://github.com/nuget/home/issues/11476">https://github.com/nuget/home/issues/11476</a></remarks>
        /// <param name="source">
        /// The package source to install the package from. This value can be <c>null</c>
        /// to indicate that the user's configured sources should be used. Otherwise,
        /// this should be the source path as a string. If the user has credentials
        /// configured for a source, this value must exactly match the configured source
        /// value.
        /// </param>
        /// <param name="project">The target project for package installation.</param>
        /// <param name="packageId">The package ID of the package to install.</param>
        /// <param name="version">
        /// The version of the package to install. <c>null</c> can be provided to
        /// install the latest version of the package.
        /// </param>
        /// <param name="ignoreDependencies">
        /// A boolean indicating whether or not to ignore the package's dependencies
        /// during installation.
        /// </param>
        void InstallPackage(string source, Project project, string packageId, string version, bool ignoreDependencies);

        /// <summary>
        /// Installs a single package from the specified package source.
        /// </summary>
        /// <param name="repository">The package repository to install the package from.</param>
        /// <param name="project">The target project for package installation.</param>
        /// <param name="packageId">The package id of the package to install.</param>
        /// <param name="version">
        /// The version of the package to install. <c>null</c> can be provided to
        /// install the latest version of the package.
        /// </param>
        /// <param name="ignoreDependencies">
        /// A boolean indicating whether or not to ignore the package's dependencies
        /// during installation.
        /// </param>
        /// <param name="skipAssemblyReferences">
        /// A boolean indicating if assembly references from the package should be
        /// skipped.
        /// </param>
        [Obsolete]
        void InstallPackage(IPackageRepository repository, Project project, string packageId, string version, bool ignoreDependencies, bool skipAssemblyReferences);

        /// <summary>
        /// Installs one or more packages that exist on disk in a folder defined in the registry.
        /// </summary>
        /// <param name="keyName">
        /// The registry key name (under NuGet's repository key) that defines the folder on disk
        /// containing the packages.
        /// </param>
        /// <param name="isPreUnzipped">
        /// A boolean indicating whether the folder contains packages that are
        /// pre-unzipped.
        /// </param>
        /// <param name="skipAssemblyReferences">
        /// A boolean indicating whether the assembly references from the packages
        /// should be skipped.
        /// </param>
        /// <param name="project">The target project for package installation.</param>
        /// <param name="packageVersions">
        /// A dictionary of packages/versions to install where the key is the package id
        /// and the value is the version.
        /// </param>
        /// <remarks>
        /// If any version of the package is already installed, no action will be taken.
        /// <para>
        /// Dependencies are always ignored.
        /// </para>
        /// <para>Can be called from a background thread, if the UI thread is not blocked waiting for this to finish.
        /// See <a href="https://github.com/nuget/home/issues/11476">https://github.com/nuget/home/issues/11476</a></para>
        /// </remarks>
        void InstallPackagesFromRegistryRepository(string keyName, bool isPreUnzipped, bool skipAssemblyReferences, Project project, IDictionary<string, string> packageVersions);

        /// <summary>
        /// Installs one or more packages that exist on disk in a folder defined in the registry.
        /// </summary>
        /// <param name="keyName">
        /// The registry key name (under NuGet's repository key) that defines the folder on disk
        /// containing the packages.
        /// </param>
        /// <param name="isPreUnzipped">
        /// A boolean indicating whether the folder contains packages that are
        /// pre-unzipped.
        /// </param>
        /// <param name="skipAssemblyReferences">
        /// A boolean indicating whether the assembly references from the packages
        /// should be skipped.
        /// </param>
        /// <param name="ignoreDependencies">A boolean indicating whether the package's dependencies should be ignored</param>
        /// <param name="project">The target project for package installation.</param>
        /// <param name="packageVersions">
        /// A dictionary of packages/versions to install where the key is the package id
        /// and the value is the version.
        /// </param>
        /// <remarks>
        /// If any version of the package is already installed, no action will be taken.
        /// <para>Can be called from a background thread, if the UI thread is not blocked waiting for this to finish.
        /// See <a href="https://github.com/nuget/home/issues/11476">https://github.com/nuget/home/issues/11476</a></para>
        /// </remarks>
        void InstallPackagesFromRegistryRepository(string keyName, bool isPreUnzipped, bool skipAssemblyReferences, bool ignoreDependencies, Project project, IDictionary<string, string> packageVersions);

        /// <summary>
        /// Installs one or more packages that are embedded in a Visual Studio Extension Package.
        /// </summary>
        /// <param name="extensionId">The Id of the Visual Studio Extension Package.</param>
        /// <param name="isPreUnzipped">
        /// A boolean indicating whether the folder contains packages that are
        /// pre-unzipped.
        /// </param>
        /// <param name="skipAssemblyReferences">
        /// A boolean indicating whether the assembly references from the packages
        /// should be skipped.
        /// </param>
        /// <param name="project">The target project for package installation</param>
        /// <param name="packageVersions">
        /// A dictionary of packages/versions to install where the key is the package id
        /// and the value is the version.
        /// </param>
        /// <remarks>
        /// If any version of the package is already installed, no action will be taken.
        /// <para>
        /// Dependencies are always ignored.
        /// </para>
        /// <para>Can be called from a background thread, if the UI thread is not blocked waiting for this to finish.
        /// See <a href="https://github.com/nuget/home/issues/11476">https://github.com/nuget/home/issues/11476</a></para>
        /// </remarks>
        void InstallPackagesFromVSExtensionRepository(string extensionId, bool isPreUnzipped, bool skipAssemblyReferences, Project project, IDictionary<string, string> packageVersions);

        /// <summary>
        /// Installs one or more packages that are embedded in a Visual Studio Extension Package.
        /// </summary>
        /// <param name="extensionId">The Id of the Visual Studio Extension Package.</param>
        /// <param name="isPreUnzipped">
        /// A boolean indicating whether the folder contains packages that are
        /// pre-unzipped.
        /// </param>
        /// <param name="skipAssemblyReferences">
        /// A boolean indicating whether the assembly references from the packages
        /// should be skipped.
        /// </param>
        /// <param name="ignoreDependencies">A boolean indicating whether the package's dependencies should be ignored</param>
        /// <param name="project">The target project for package installation</param>
        /// <param name="packageVersions">
        /// A dictionary of packages/versions to install where the key is the package id
        /// and the value is the version.
        /// </param>
        /// <remarks>
        /// If any version of the package is already installed, no action will be taken.
        /// <para>Can be called from a background thread, if the UI thread is not blocked waiting for this to finish.
        /// See <a href="https://github.com/nuget/home/issues/11476">https://github.com/nuget/home/issues/11476</a></para>
        /// </remarks>
        void InstallPackagesFromVSExtensionRepository(string extensionId, bool isPreUnzipped, bool skipAssemblyReferences, bool ignoreDependencies, Project project, IDictionary<string, string> packageVersions);
    }

Interface IVsPackageinstaller2


    /// <summary>
    /// Contains method to install latest version of a single package into a project within the current solution.
    /// </summary>
    public interface IVsPackageInstaller2 : IVsPackageInstaller
    {
        /// <summary>
        /// Installs the latest version of a single package from the specified package source.
        /// </summary>
        /// <remarks>Can be called from a background thread, if the UI thread is not blocked waiting for this to finish.
        /// See <a href="https://github.com/nuget/home/issues/11476">https://github.com/nuget/home/issues/11476</a></remarks>
        /// <param name="source">
        /// The package source to install the package from. This value can be <c>null</c>
        /// to indicate that the user's configured sources should be used. Otherwise,
        /// this should be the source path as a string. If the user has credentials
        /// configured for a source, this value must exactly match the configured source
        /// value.
        /// </param>
        /// <param name="project">The target project for package installation.</param>
        /// <param name="packageId">The package ID of the package to install.</param>
        /// <param name="includePrerelease">
        /// Whether or not to consider prerelease versions when finding the latest version
        /// to install.
        /// </param>
        /// <param name="ignoreDependencies">
        /// A boolean indicating whether or not to ignore the package's dependencies
        /// during installation.
        /// </param>
        /// <exception cref="InvalidOperationException">
        /// Thrown when <see paramref="includePrerelease"/> is <c>false</c> and no stable version
        /// of the package exists.
        /// </exception>
        void InstallLatestPackage(
            string source,
            Project project,
            string packageId,
            bool includePrerelease,
            bool ignoreDependencies);
    }

Interface IVsPackageInstallerEvents

Observação

Esses eventos são gerados apenas para projetos packages.config. Para obter atualizações sobre packages.config e PackageReference, use IVsNuGetProjectUpdateEvents em vez disso.

    /// <summary>
    /// Contains events which are raised when packages are installed or uninstalled from projects and the current
    /// solution.
    /// </summary>
    public interface IVsPackageInstallerEvents
    {
        /// <summary>
        /// Raised when a package is about to be installed into the current solution.
        /// </summary>
        event VsPackageEventHandler PackageInstalling;

        /// <summary>
        /// Raised after a package has been installed into the current solution.
        /// </summary>
        event VsPackageEventHandler PackageInstalled;

        /// <summary>
        /// Raised when a package is about to be uninstalled from the current solution.
        /// </summary>
        event VsPackageEventHandler PackageUninstalling;

        /// <summary>
        /// Raised after a package has been uninstalled from the current solution.
        /// </summary>
        event VsPackageEventHandler PackageUninstalled;

        /// <summary>
        /// Raised after a package has been installed into a project within the current solution.
        /// </summary>
        event VsPackageEventHandler PackageReferenceAdded;

        /// <summary>
        /// Raised after a package has been uninstalled from a project within the current solution.
        /// </summary>
        event VsPackageEventHandler PackageReferenceRemoved;
    }

Interface IVsPackageInstallerProjectEvents

Observação

Esses eventos são gerados apenas para projetos packages.config. Para obter atualizações sobre packages.config e PackageReference, use IVsNuGetProjectUpdateEvents em vez disso.

    /// <summary>
    /// Contains batch events which are raised when packages are installed or uninstalled from projects with packages.config
    /// and the current solution.
    /// </summary>
    public interface IVsPackageInstallerProjectEvents
    {
        /// <summary>
        /// Raised before any IVsPackageInstallerEvents events are raised for a project.
        /// </summary>
        event VsPackageProjectEventHandler BatchStart;

        /// <summary>
        /// Raised after all IVsPackageInstallerEvents events are raised for a project.
        /// </summary>
        event VsPackageProjectEventHandler BatchEnd;

    }

Interface IVsPackageInstallerServices

    /// <summary>
    /// Contains methods to query for installed packages within the current solution.
    /// </summary>
    [Obsolete("Use INuGetProjectService in the NuGet.VisualStudio.Contracts package instead.")]
    public interface IVsPackageInstallerServices
    {
        /// <summary>
        /// Get the list of NuGet packages installed in the current solution.
        /// </summary>
        [Obsolete("This method can cause UI delays if called on the UI thread. Use INuGetProjectService.GetInstalledPackagesAsync in the NuGet.VisualStudio.Contracts package instead, and iterate all projects in the solution")]
        IEnumerable<IVsPackageMetadata> GetInstalledPackages();

        /// <summary>
        /// Checks if a NuGet package with the specified Id is installed in the specified project.
        /// </summary>
        /// <param name="project">The project to check for NuGet package.</param>
        /// <param name="id">The id of the package to check.</param>
        /// <returns><c>true</c> if the package is install. <c>false</c> otherwise.</returns>
        /// <exception cref="InvalidOperationException">A "project not nominated" exception will be thrown if the project system has not yet told NuGet about the project.
        /// You can use <see cref="IVsNuGetProjectUpdateEvents"/> or Microsoft.VisualStudio.OperationProgress to be notified when the project is ready.</exception>
        [Obsolete("This method can cause UI delays if called on the UI thread. Use INuGetProjectService.GetInstalledPackagesAsync in the NuGet.VisualStudio.Contracts package instead, and check the specific package you're interested in")]
        bool IsPackageInstalled(Project project, string id);

        /// <summary>
        /// Checks if a NuGet package with the specified Id and version is installed in the specified project.
        /// </summary>
        /// <param name="project">The project to check for NuGet package.</param>
        /// <param name="id">The id of the package to check.</param>
        /// <param name="version">The version of the package to check.</param>
        /// <returns><c>true</c> if the package is install. <c>false</c> otherwise.</returns>
        /// <exception cref="InvalidOperationException">A "project not nominated" exception will be thrown if the project system has not yet told NuGet about the project.
        /// You can use <see cref="IVsNuGetProjectUpdateEvents"/> or Microsoft.VisualStudio.OperationProgress to be notified when the project is ready.</exception>
        [Obsolete("This method can cause UI delays if called on the UI thread. Use INuGetProjectService.GetInstalledPackagesAsync in the NuGet.VisualStudio.Contracts package instead, and check the specific package you're interested in")]
        bool IsPackageInstalled(Project project, string id, SemanticVersion version);

        /// <summary>
        /// Checks if a NuGet package with the specified Id and version is installed in the specified project.
        /// </summary>
        /// <param name="project">The project to check for NuGet package.</param>
        /// <param name="id">The id of the package to check.</param>
        /// <param name="versionString">The version of the package to check.</param>
        /// <returns><c>true</c> if the package is install. <c>false</c> otherwise.</returns>
        /// <remarks>
        /// The reason this method is named IsPackageInstalledEx, instead of IsPackageInstalled, is that
        /// when client project compiles against this assembly, the compiler would attempt to bind against
        /// the other overload which accepts SemanticVersion and would require client project to reference NuGet.Core.
        /// </remarks>
        /// <exception cref="InvalidOperationException">A "project not nominated" exception will be thrown if the project system has not yet told NuGet about the project.
        /// You can use <see cref="IVsNuGetProjectUpdateEvents"/> or Microsoft.VisualStudio.OperationProgress to be notified when the project is ready.</exception>
        [Obsolete("This method can cause UI delays if called on the UI thread. Use INuGetProjectService.GetInstalledPackagesAsync in the NuGet.VisualStudio.Contracts package instead, and check the specific package you're interested in")]
        bool IsPackageInstalledEx(Project project, string id, string versionString);

        /// <summary>
        /// Get the list of NuGet packages installed in the specified project.
        /// </summary>
        /// <param name="project">The project to get NuGet packages from.</param>
        /// <exception cref="InvalidOperationException">A "project not nominated" exception will be thrown if the project system has not yet told NuGet about the project.
        /// You can use <see cref="IVsNuGetProjectUpdateEvents"/> or Microsoft.VisualStudio.OperationProgress to be notified when the project is ready.</exception>
        [Obsolete("This method can cause UI delays if called on the UI thread. Use INuGetProjectService.GetInstalledPackagesAsync in the NuGet.VisualStudio.Contracts package instead")]
        IEnumerable<IVsPackageMetadata> GetInstalledPackages(Project project);
    }

Interface IVsPackageManagerProvider

Essa interface foi usada principalmente pela equipe do ASP.NET, para sugerir que pacotes Javascript e CSS como jQuery e bootstrap, sejam instalados com Bower em vez de NuGet. Desde que eles removeram essa funcionalidade do Visual Studio, o NuGet tornou obsoleta essa interface e ela não será mais usada pela interface do usuário do Gerenciador de Pacotes no Visual Studio 2022 (versão 17.0) e posterior.

    /// <summary>
    /// Interface allowing integration of alternate package manager suggestion for a NuGet package. 
    /// For example jQuery may appear on Bower and npm,
    /// it might be more appropriate to install a package from them for certain projects. 
    /// </summary>
    [Obsolete]
    public interface IVsPackageManagerProvider
    {
        /// <summary>
        /// Localized display package manager name.
        /// </summary>
        string PackageManagerName { get; }

        /// <summary>
        /// Package manager unique id.
        /// </summary>
        string PackageManagerId { get; }

        /// <summary>
        /// The tool tip description for the package
        /// </summary>
        string Description { get; }

        /// <summary>
        /// Check if a recommendation should be surfaced for an alternate package manager. 
        /// This code should not rely on slow network calls, and should return rapidly.
        /// </summary>
        /// <param name="packageId">Current package id</param>
        /// <param name="projectName">Unique project name for finding the project through VS dte</param>
        /// <param name="token">Cancellation Token</param>
        /// <returns>return true if need to direct to integrated package manager for this package</returns>
        Task<bool> CheckForPackageAsync(string packageId, string projectName, CancellationToken token);

        /// <summary>
        /// This Action should take the user to the other package manager.
        /// </summary>
        /// <param name="packageId">Current package id</param>
        /// <param name="projectName">Unique project name for finding the project through VS dte</param>
        void GoToPackage(string packageId, string projectName);
    }

Interface IVsPackageRestorer


    /// <summary>
    /// Contains methods to restore packages installed in a project within the current solution.
    /// </summary>
    public interface IVsPackageRestorer
    {
        /// <summary>
        /// Returns a value indicating whether the user consent to download NuGet packages
        /// has been granted.
        /// </summary>
        /// <remarks>Can be called from a background thread.</remarks>
        /// <returns>true if the user consent has been granted; otherwise, false.</returns>
        bool IsUserConsentGranted();

        /// <summary>
        /// Restores NuGet packages installed in the given project within the current solution.
        /// </summary>
        /// <remarks>Can be called from a background thread.</remarks>
        /// <param name="project">The project whose NuGet packages to restore.</param>
        void RestorePackages(Project project);
    }

Interface IVsPackageSourceProvider

    /// <summary>
    /// A public API for retrieving the list of NuGet package sources.
    /// </summary>
    public interface IVsPackageSourceProvider
    {
        /// <summary>
        /// Provides the list of package sources.
        /// </summary>
        /// <remarks>Can be called from a background thread.</remarks>
        /// <param name="includeUnOfficial">Unofficial sources will be included in the results</param>
        /// <param name="includeDisabled">Disabled sources will be included in the results</param>
        /// <remarks>Does not require the UI thread.</remarks>
        /// <exception cref="ArgumentException">Thrown if a NuGet configuration file is invalid.</exception>
        /// <exception cref="ArgumentNullException">Thrown if a NuGet configuration file is invalid.</exception>
        /// <exception cref="InvalidOperationException">Thrown if a NuGet configuration file is invalid.</exception>
        /// <exception cref="InvalidDataException">Thrown if a NuGet configuration file is invalid.</exception>
        /// <returns>Key: source name Value: source URI</returns>
        IEnumerable<KeyValuePair<string, string>> GetSources(bool includeUnOfficial, bool includeDisabled);

        /// <summary>
        /// Raised when sources are added, removed, disabled, or modified.
        /// </summary>
        event EventHandler SourcesChanged;
    }

Interface IVsPackageUninstaller

    /// <summary>
    /// Contains methods to uninstall packages from a project within the current solution.
    /// </summary>
    public interface IVsPackageUninstaller
    {
        /// <summary>
        /// Uninstall the specified package from a project and specify whether to uninstall its dependency packages
        /// too.
        /// </summary>
        /// <remarks>Can be called from a background thread, if the UI thread is not blocked waiting for this to finish.
        /// See <a href="https://github.com/nuget/home/issues/11476">https://github.com/nuget/home/issues/11476</a></remarks>
        /// <param name="project">The project from which the package is uninstalled.</param>
        /// <param name="packageId">The package to be uninstalled</param>
        /// <param name="removeDependencies">
        /// A boolean to indicate whether the dependency packages should be
        /// uninstalled too.
        /// </param>
        void UninstallPackage(Project project, string packageId, bool removeDependencies);
    }

Interface IVsPathContext

    /// <summary>
    /// NuGet path information specific to the current context (e.g. project context).
    /// Represents captured snapshot associated with current project/solution settings.
    /// Should be discarded immediately after all queries are done.
    /// </summary>
    public interface IVsPathContext
    {
        /// <summary>
        /// User package folder directory. The path returned is an absolute path.
        /// </summary>
        string UserPackageFolder { get; }

        /// <summary>
        /// Fallback package folder locations. The paths (if any) in the returned list are absolute paths. If no
        /// fallback package folders are configured, an empty list is returned. The item type of this sequence is
        /// <see cref="string"/>.
        /// </summary>
        /// <remarks>Can be called from a background thread.</remarks>
        IEnumerable FallbackPackageFolders { get; }

        /// <summary>
        /// Fetch a package directory containing the provided asset path.
        /// </summary>
        /// <param name="packageAssetPath">Absolute path to package asset file.</param>
        /// <param name="packageDirectoryPath">Full path to a package directory. 
        /// <code>null</code> if returned falue is <code>false</code>.</param>
        /// <returns>
        /// <code>true</code> when a package containing the given file was found, <code>false</code> - otherwise.
        /// </returns>
        /// <example>
        /// Suppose the project is a packages.config project and the following asset paths are provided:
        /// 
        /// - C:\src\MyProject\packages\NuGet.Versioning.3.5.0-rc1-final\lib\net45\NuGet.Versioning.dll
        /// - C:\path\to\non\package\assembly\Newtonsoft.Json.dll
        /// - C:\src\MyOtherProject\packages\NuGet.Core.2.12.0\lib\net40\NuGet.Core.dll
        /// - C:\src\MyProject\packages\Autofac.3.5.2\lib\net40\Autofac.dll
        /// - C:\src\MyProject\packages\Autofac.3.5.2\lib\net40\Autofac.Fake.dll
        /// 
        /// The result will be:
        /// 
        /// - C:\src\MyProject\packages\NuGet.Versioning.3.5.0-rc1-final
        /// - null
        /// - null
        /// - C:\src\MyProject\packages\Autofac.3.5.2
        /// - C:\src\MyProject\packages\Autofac.3.5.2
        /// </example>
        bool TryResolvePackageAsset(string packageAssetPath, out string packageDirectoryPath);
    }

Interface IVsPathContext2

    /// <summary>
    /// NuGet path information specific to the current context (e.g. project context) or solution context
    /// Represents captured snapshot associated with current project/solution settings.
    /// Should be discarded immediately after all queries are done.
    /// </summary>
    public interface IVsPathContext2 : IVsPathContext
    {
        /// <summary>
        /// Solution packages folder directory. This will always be set irrespective if folder actually exists or not.
        /// The path returned is an absolute path.
        /// </summary>
        string SolutionPackageFolder { get; }
    }

Interface IVsPathContextProvider

    /// <summary>
    /// A factory to initialize <see cref="IVsPathContext"/> instances.
    /// </summary>
    public interface IVsPathContextProvider
    {
        /// <summary>
        /// Attempts to create an instance of <see cref="IVsPathContext"/>.
        /// </summary>
        /// <remarks>Can be called from a background thread.</remarks>
        /// <param name="projectUniqueName">
        /// Unique identificator of the project. Should be a full path to project file.
        /// </param>
        /// <param name="context">The path context associated with given project.</param>
        /// <returns>
        /// <code>True</code> if operation has succeeded and context was created.
        /// False, otherwise, e.g. when provided project is not managed by NuGet.
        /// </returns>
        /// <throws>
        /// <code>ArgumentNullException</code> if projectUniqueName is passed as null.
        /// <code>InvalidOperationException</code> when it fails to create a context and return appropriate error message.
        /// </throws>
        bool TryCreateContext(string projectUniqueName, out IVsPathContext context);
    }

Interface IVsPathContextProvider2

    /// <summary>
    /// A factory to initialize <see cref="IVsPathContext2"/> instances.
    /// </summary>
    public interface IVsPathContextProvider2 : IVsPathContextProvider
    {
        /// <summary>
        /// Attempts to create an instance of <see cref="IVsPathContext2"/> for the solution.
        /// </summary>
        /// <remarks>This API is free-threaded, but APIs on the returned IVsPathContext2 may not be.</remarks>
        /// <param name="context">The path context associated with this solution.</param>
        /// <returns>
        /// <code>True</code> if operation has succeeded and context was created.
        /// <code>False</code> otherwise.
        /// </returns>
        /// <throws>
        /// <code>InvalidOperationException</code> when it fails to create a context and return appropriate error message.
        /// </throws>
        bool TryCreateSolutionContext(out IVsPathContext2 context);

        /// <summary>
        /// Attempts to create an instance of <see cref="IVsPathContext2"/> for the solution.
        /// </summary>
        /// <remarks>This API is free-threaded, but APIs on the returned IVsPathContext2 may not be.</remarks>
        /// <param name="solutionDirectory">
        /// path to the solution directory. Must be an absolute path.
        /// It will be performant to pass the solution directory if it's available.
        /// </param>
        /// <param name="context">The path context associated with this solution.</param>
        /// <returns>
        /// <code>True</code> if operation has succeeded and context was created.
        /// <code>False</code> otherwise.
        /// </returns>
        /// <throws>
        /// <code>ArgumentNullException</code> if solutionDirectory is passed as null.
        /// <code>InvalidOperationException</code> when it fails to create a context and return appropriate error message.
        /// </throws>
        bool TryCreateSolutionContext(string solutionDirectory, out IVsPathContext2 context);

        /// <summary>
        /// Attempts to create an instance of <see cref="IVsPathContext"/> containing only the user wide and machine wide configurations.
        /// If a solution is loaded, note that the values in the path context might not be the actual effective values for the solution.
        /// If a customer has overriden the `globalPackagesFolder` key or cleared the `fallbackPackageFolders`, these values will be incorrect.
        /// It is important to keep this scenario in mind when working with this path. To predict differences you can call this in combination with <see cref="TryCreateSolutionContext(out IVsPathContext2)"/>.
        /// </summary>
        /// <returns>
        /// <code>True</code> if operation has succeeded and context was created.
        /// <code>False</code> otherwise.
        /// </returns>
        /// <remarks>
        /// This method can be safely invoked from a background thread. Do note that this method might switch to the UI thread internally, so be mindful of blocking the UI thread on this.
        /// </remarks>
        bool TryCreateNoSolutionContext(out IVsPathContext vsPathContext);
    }

Interface IVsProjectJsonToPackageReferenceMigrator

    /// <summary>
    /// Contains methods to migrate a project.json based legacy project to PackageReference based project.
    /// </summary>
    public interface IVsProjectJsonToPackageReferenceMigrator
    {
        /// <summary>
        /// Migrates a legacy Project.json based project to Package Reference based project. The result 
        /// should be casted to type <see cref="IVsProjectJsonToPackageReferenceMigrateResult"/>
        /// The backup of the original project file and project.json file is created in the Backup folder
        /// in the root of the project directory.
        /// </summary>
        /// <param name="projectUniqueName">The full path to the project that needs to be migrated</param>
        Task<object> MigrateProjectJsonToPackageReferenceAsync(string projectUniqueName);

    }

Interface IVsSemanticVersionComparer

    /// <summary>
    /// An interface for comparing two opaque version strings by treating them as NuGet semantic
    /// versions.
    /// </summary>
    public interface IVsSemanticVersionComparer
    {
        /// <summary>
        /// Compares two version strings as if they were NuGet semantic version
        /// strings. Returns a number less than zero if <paramref name="versionA"/>
        /// is less than <paramref name="versionB"/>. Returns zero if the two versions 
        /// are equivalent. Returns a number greater than zero if <paramref name="versionA"/>
        /// is greater than <paramref name="versionB"/>.
        /// </summary>
        /// <remarks>This API is free-threaded.</remarks>
        /// <param name="versionA">The first version string.</param>
        /// <param name="versionB">The second version string.</param>
        /// <exception cref="ArgumentNullException">If either version string is null.</exception>
        /// <exception cref="ArgumentException">If either string cannot be parsed.</exception>
        /// <returns>
        /// A standard comparison integer based on the relationship between the
        /// two provided versions.
        /// </returns>
        int Compare(string versionA, string versionB);
    }

Interface IVsNuGetProjectUpdateEvents

    /// <summary>
    /// NuGet project update events.
    /// This API provides means of tracking project updates by NuGet.
    /// In particular, for PackageReference projects, updates to the assets file and nuget generated props/targets.
    /// For packages.config projects, package installations will be tracked.
    /// All events are fired from a threadpool thread.
    /// </summary>
    public interface IVsNuGetProjectUpdateEvents
    {
        /// <summary>
        /// Raised when solution restore starts with the list of projects that will be restored.
        /// The list will not include all projects. Some projects may have been skipped in earlier up to date check, and other projects may no-op.
        /// </summary>
        /// <remarks>
        /// Just because a project is being restored that doesn't necessarily mean any actual updates will happen.
        /// No heavy computation should happen in any of these methods as it'll block the NuGet progress.
        /// </remarks>
        event SolutionRestoreEventHandler SolutionRestoreStarted;

        /// <summary>
        /// Raised when solution restore finishes with the list of projects that were restored.
        /// The list will not include all projects. Some projects may have been skipped in earlier up to date check, and other projects may no-op.
        /// </summary>
        /// <remarks>
        /// Just because a project is being restored that doesn't necessarily mean any actual updates will happen.
        /// No heavy computation should happen in any of these methods as it'll block the NuGet progress.
        /// </remarks>
        event SolutionRestoreEventHandler SolutionRestoreFinished;

        /// <summary>
        /// Raised when particular project is about to be updated.
        /// For PackageReference projects, this means an assets file or a nuget temp msbuild file write (nuget.g.props or nuget.g.targets). The list of updated files will include the aforementioned.
        /// If a project was restored, but no file updates happen, this event will not be fired.
        /// For packages.config projects, this means that the project file was changed.
        /// </summary>
        /// <remarks>
        /// No heavy computation should happen in any of these methods as it'll block the NuGet progress.
        /// </remarks>
        event ProjectUpdateEventHandler ProjectUpdateStarted;

        /// <summary>
        /// Raised when particular project update has been completed.
        /// For PackageReference projects, this means an assets file or a nuget temp msbuild file write (nuget.g.props or nuget.g.targets). The list of updated files will include the aforementioned.
        /// If a project was restored, but no file updates happen, this event will not be fired.
        /// For packages.config projects, this means that the project file was changed.
        /// </summary>
        /// <remarks>
        /// No heavy computation should happen in any of these methods as it'll block the NuGet progress.
        /// </remarks>
        event ProjectUpdateEventHandler ProjectUpdateFinished;
    }

    /// <summary>
    /// Defines an event handler delegate for solution restore start and end.
    /// </summary>
    /// <param name="projects">List of projects that will run restore. Never <see langword="null"/>.</param>
    public delegate void SolutionRestoreEventHandler(IReadOnlyList<string> projects);

    /// <summary>
    /// Defines an event handler delegate for project updates.
    /// </summary>
    /// <param name="projectUniqueName">Project full path. Never <see langword="null"/>. </param>
    /// <param name="updatedFiles">NuGet output files that may be updated. Never <see langword="null"/>.</param>
    public delegate void ProjectUpdateEventHandler(string projectUniqueName, IReadOnlyList<string> updatedFiles);
}

Interface IVsSolutionRestoreService

    /// <summary>
    /// Represents a package restore service API for integration with a project system.
    /// </summary>
    public interface IVsSolutionRestoreService
    {
        /// <summary>
        /// A task providing last/current restore operation status.
        /// Could be null if restore has not started yet.
        /// </summary>
        /// <remarks>
        /// This task is a reflection of the current state of the current-restore-operation or
        /// recently-completed-restore. The usage of this property will be to continue,
        /// e.g. to build solution or something) on completion of this task.
        /// Also, on completion, if the task returns false then it means the restore failed and
        /// the build task will be terminated.
        /// </remarks>
        Task<bool> CurrentRestoreOperation { get; }

        /// <summary>
        /// An entry point used by CPS to indicate given project needs to be restored.
        /// </summary>
        /// <param name="projectUniqueName">
        /// Unique identifier of the project. Should be a full path to project file.
        /// </param>
        /// <param name="projectRestoreInfo">Metadata <see cref="IVsProjectRestoreInfo"/> needed for restoring the project.</param>
        /// <param name="token">Cancellation token.</param>
        /// <returns>
        /// Returns a restore task corresponding to the nominated project request.
        /// NuGet will batch restore requests so it's possible the same restore task will be returned for multiple projects.
        /// When the requested restore operation for the given project completes the task will indicate operation success or failure.
        /// </returns>
        /// <exception cref="ArgumentException">Thrown if <paramref name="projectUniqueName" /> is not the path of a project file.</exception>
        /// <exception cref="ArgumentNullException">Thrown if <paramref name="projectRestoreInfo" /> is <c>null</c>.</exception>
        /// <exception cref="OperationCanceledException">Thrown if <paramref name="token" /> is cancelled.</exception>
        Task<bool> NominateProjectAsync(string projectUniqueName, IVsProjectRestoreInfo projectRestoreInfo, CancellationToken token);
    }

Interface IVsSolutionRestoreService2

    /// <summary>
    /// Represents a package restore service API for integration with a project system.
    /// </summary>
    public interface IVsSolutionRestoreService2
    {
        /// <summary>
        /// An entry point which allows non-NETCore SDK based projects to indicate given project needs to be restored.
        /// </summary>
        /// <param name="projectUniqueName">
        /// Unique identificator of the project. Should be a full path to project file.
        /// </param>
        /// <param name="token">Cancellation token.</param>
        /// <returns>
        /// Returns a restore task corresponding to the nominated project request.
        /// NuGet will batch restore requests so it's possible the same restore task will be returned for multiple projects.
        /// When the requested restore operation for the given project completes the task will indicate operation success or failure.
        /// </returns>
        Task<bool> NominateProjectAsync(string projectUniqueName, CancellationToken token);
    }

Interface IVsSolutionRestoreService3

    /// <summary>
    /// Represents a package restore service API for integration with a project system.
    /// </summary>
    public interface IVsSolutionRestoreService3
    {
        /// <summary>
        /// A task providing last/current restore operation status.
        /// Could be null if restore has not started yet.
        /// </summary>
        /// <remarks>
        /// This task is a reflection of the current state of the current-restore-operation or
        /// recently-completed-restore. The usage of this property will be to continue,
        /// e.g. to build solution or something) on completion of this task.
        /// Also, on completion, if the task returns false then it means the restore failed and
        /// the build task will be terminated.
        /// </remarks>
        Task<bool> CurrentRestoreOperation { get; }

        /// <summary>
        /// An entry point used by CPS to indicate given project needs to be restored.
        /// This entry point also handles PackageDownload items
        /// </summary>
        /// <param name="projectUniqueName">
        /// Unique identifier of the project. Should be a full path to project file.
        /// </param>
        /// <param name="projectRestoreInfo">Metadata <see cref="IVsProjectRestoreInfo2"/> needed for restoring the project.</param>
        /// <param name="token">Cancellation token.</param>
        /// <returns>
        /// Returns a restore task corresponding to the nominated project request.
        /// NuGet will batch restore requests so it's possible the same restore task will be returned for multiple projects.
        /// When the requested restore operation for the given project completes the task will indicate operation success or failure.
        /// </returns>
        /// <exception cref="ArgumentException">Thrown if <paramref name="projectUniqueName" /> is not the path of a project file.</exception>
        /// <exception cref="ArgumentNullException">Thrown if <paramref name="projectRestoreInfo" /> is <c>null</c>.</exception>
        /// <exception cref="OperationCanceledException">Thrown if <paramref name="token" /> is cancelled.</exception>
        Task<bool> NominateProjectAsync(string projectUniqueName, IVsProjectRestoreInfo2 projectRestoreInfo, CancellationToken token);
    }

Interface IVsSolutionRestoreService4

    /// <summary>
    /// Represents a package restore service API for integration with a project system.
    /// Implemented by NuGet.
    /// </summary>
    public interface IVsSolutionRestoreService4 : IVsSolutionRestoreService3
    {
        /// <summary>
        /// A project system can call this service (optionally) to register itself to coordinate restore. <br/>
        /// Each project can only register once. NuGet will call into the source to wait for nominations for restore. <br/>
        /// NuGet will remove the registered object when a project is unloaded.
        /// </summary>
        /// <param name="restoreInfoSource">Represents a project specific info source</param>
        /// <param name="cancellationToken">Cancellation token.</param>
        /// <exception cref="InvalidOperationException">If the project has already been registered.</exception>
        /// <exception cref="ArgumentNullException">If <paramref name="restoreInfoSource"/> is null. </exception>
        /// <exception cref="ArgumentException">If <paramref name="restoreInfoSource"/>'s <see cref="IVsProjectRestoreInfoSource.Name"/> is <see langword="null"/>. </exception>
        Task RegisterRestoreInfoSourceAsync(IVsProjectRestoreInfoSource restoreInfoSource, CancellationToken cancellationToken);
    }

Interface IVsProjectRestoreInfoSource

    /// <summary>
    /// Represents a package restore service API for integration with a project system.
    /// Implemented by the project-system.
    /// </summary>
    public interface IVsProjectRestoreInfoSource
    {
        /// <summary>
        /// Project Unique Name.
        /// Must be equivalent to the name provided in the <see cref="IVsSolutionRestoreService3.NominateProjectAsync(string, IVsProjectRestoreInfo2, CancellationToken)"/> or equivalent.
        /// </summary>
        /// <remarks>Never <see langword="null"/>.</remarks>
        string Name { get; }

        /// <summary>
        /// Whether the source needs to do some work that could lead to a nomination. <br/>
        /// Called frequently, so it should be very efficient.
        /// </summary>
        bool HasPendingNomination { get; }

        /// <summary>
        /// NuGet calls this method to wait on a potential nomination. <br/>
        /// If the project has no pending restore data, it will return a completed task. <br/>
        /// Otherwise, the task will be completed once the project nominates. <br/>
        /// The task will be cancelled, if the source decide it no longer needs to nominate (for example: the restore state has no change) <br/>
        /// The task will be failed, if the source runs into a problem, and it cannot get the correct data to nominate (for example: DT build failed) <br/>
        /// </summary>
        /// <param name="cancellationToken">Cancellation token.</param>
        Task WhenNominated(CancellationToken cancellationToken);
    }

Interface IVsSolutionRestoreStatusProvider

    /// <summary>
    /// Provides the status of IVsSolutionRestore.
    /// </summary>
    public interface IVsSolutionRestoreStatusProvider
    {
        /// <summary>
        /// IsRestoreCompleteAsync indicates whether or not automatic package restore has pending work.
        /// Automatic package restore applies for both packages.config and PackageReference projects.
        ///
        /// Returns true if all projects in the solution that require nomination have been nominated for restore and all pending restores have completed.
        /// The result does not indicate that restore completed successfully, a failed restore will still return true.
        /// </summary>
        /// <remarks>
        /// Special cases:
        /// * An empty solution will return true.
        /// * If no solution is open this will true.
        /// * An invalid project that does not provide restore details will cause this to return false since restore will not run for that project.
        ///
        /// Restores running due to Install/Update/Uninstall operations are NOT included in this status. Status here is limited to IVsSolutionRestoreService.
        /// </remarks>
        Task<bool> IsRestoreCompleteAsync(CancellationToken token);
    }

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API do NuGet no Visual Studio

Versões do pacote

SDK do cliente do NuGet em extensões do Visual Studio

Services List

Serviço agenciados

Serviços MEF

NuGet.VisualStudio

NuGet.SolutionRestoreManager

Uso dos serviços do NuGet

Serviço agenciados

Serviços MEF

Noções básicas sobre os sistemas de projeto .NET

Interface INuGetProjectService

Interface IRegistryKey

Interface IVsCredentialProvider

Interface IVsFrameworkCompatibility

Interface IVsFrameworkCompatibility2

Interface IVsFrameworkCompatibility3

Interface IVsFrameworkParser

Interface IVsFrameworkParser2

Interface IVsGlobalPackagesInitScriptExecutor

Interface IVsPackageInstaller

Interface IVsPackageinstaller2

Interface IVsPackageInstallerEvents

Interface IVsPackageInstallerProjectEvents

Interface IVsPackageInstallerServices

Interface IVsPackageManagerProvider

Interface IVsPackageRestorer

Interface IVsPackageSourceProvider

Interface IVsPackageUninstaller

Interface IVsPathContext

Interface IVsPathContext2

Interface IVsPathContextProvider

Interface IVsPathContextProvider2

Interface IVsProjectJsonToPackageReferenceMigrator

Interface IVsSemanticVersionComparer

Interface IVsNuGetProjectUpdateEvents

Interface IVsSolutionRestoreService

Interface IVsSolutionRestoreService2

Interface IVsSolutionRestoreService3

Interface IVsSolutionRestoreService4

Interface IVsProjectRestoreInfoSource

Interface IVsSolutionRestoreStatusProvider

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