MetadataResolver.Resolve Method

public:
 static System::ServiceModel::Description::ServiceEndpointCollection ^ Resolve(System::Collections::Generic::IEnumerable<System::ServiceModel::Description::ContractDescription ^> ^ contracts, System::ServiceModel::EndpointAddress ^ address);

public static System.ServiceModel.Description.ServiceEndpointCollection Resolve (System.Collections.Generic.IEnumerable<System.ServiceModel.Description.ContractDescription> contracts, System.ServiceModel.EndpointAddress address);

static member Resolve : seq<System.ServiceModel.Description.ContractDescription> * System.ServiceModel.EndpointAddress -> System.ServiceModel.Description.ServiceEndpointCollection

Public Shared Function Resolve (contracts As IEnumerable(Of ContractDescription), address As EndpointAddress) As ServiceEndpointCollection

Parameters

Returns

A collection of ServiceEndpoint objects for the specified contract.

Exceptions

Remarks

The default settings on the System.ServiceModel.Description.MetadataExchangeClient are used to retrieve the metadata and the default System.ServiceModel.Description.MetadataExchangeClientMode is MetadataExchangeClientMode.MetadataExchange.

To download metadata but not resolve the information into ServiceEndpoint objects, use the System.ServiceModel.Description.MetadataExchangeClient directly.

public:
 static System::ServiceModel::Description::ServiceEndpointCollection ^ Resolve(Type ^ contract, System::ServiceModel::EndpointAddress ^ address);

public static System.ServiceModel.Description.ServiceEndpointCollection Resolve (Type contract, System.ServiceModel.EndpointAddress address);

static member Resolve : Type * System.ServiceModel.EndpointAddress -> System.ServiceModel.Description.ServiceEndpointCollection

Public Shared Function Resolve (contract As Type, address As EndpointAddress) As ServiceEndpointCollection

Parameters

Returns

A collection of ServiceEndpoint objects for the specified contract.

Exceptions

Examples

The following code example shows the use of the MetadataResolver class to return metadata as a collection of ServiceEndpoint objects that are then used to connect to a service instance.

// Get the endpoints for such a service
ServiceEndpointCollection endpoints = MetadataResolver.Resolve(typeof(SampleServiceClient), metaAddress);
Console.WriteLine("Trying all available WS-Transfer metadata endpoints...");

foreach (ServiceEndpoint point in endpoints)
{
    if (point != null)
    {
        // Create a new wcfClient using retrieved endpoints.
        wcfClient = new SampleServiceClient(point.Binding, point.Address);
        Console.WriteLine(
          wcfClient.SampleMethod("Client used the "
          + point.Address.ToString()
          + " address.")
        );
        wcfClient.Close();
    }
}

Remarks

Use the Resolve method to specify the contract and the metadata address to use when downloading and resolving metadata.

The default settings on the System.ServiceModel.Description.MetadataExchangeClient are used to retrieve the metadata and the default System.ServiceModel.Description.MetadataExchangeClientMode is MetadataExchangeClientMode.MetadataExchange.

To download metadata but not resolve the information into ServiceEndpoint objects, use the System.ServiceModel.Description.MetadataExchangeClient directly.

This method requires that you specify a contract type. You can specify the contract by declaring the service interface in the client code or by using a WCF client generated by Svcutil.exe. If the interface changes (adding a new operation, for example) you must update the interface in the client code or generate a new WCF client. If you do not, an exception is thrown. For example, you have a service that implements a service contract called ICalculator that defines Add(), Sub(), Mult(), and Div(). You create a client application and generate WCF client. You then add a method to ICalculator called Echo(). If you then write an application that calls Resolve(Type, EndpointAddress) without generating a new WCF client you get the following exception.

Unhandled Exception: System.ServiceModel.Description.WsdlImporter+WsdlImportException: Cannot locate operation Echo in Contract ICalculator.

public:
 static System::ServiceModel::Description::ServiceEndpointCollection ^ Resolve(System::Collections::Generic::IEnumerable<System::ServiceModel::Description::ContractDescription ^> ^ contracts, System::ServiceModel::EndpointAddress ^ address, System::ServiceModel::Description::MetadataExchangeClient ^ client);

public static System.ServiceModel.Description.ServiceEndpointCollection Resolve (System.Collections.Generic.IEnumerable<System.ServiceModel.Description.ContractDescription> contracts, System.ServiceModel.EndpointAddress address, System.ServiceModel.Description.MetadataExchangeClient client);

static member Resolve : seq<System.ServiceModel.Description.ContractDescription> * System.ServiceModel.EndpointAddress * System.ServiceModel.Description.MetadataExchangeClient -> System.ServiceModel.Description.ServiceEndpointCollection

Public Shared Function Resolve (contracts As IEnumerable(Of ContractDescription), address As EndpointAddress, client As MetadataExchangeClient) As ServiceEndpointCollection

Parameters

Returns

A collection of ServiceEndpoint objects for the specified contract.

Exceptions

Remarks

The default System.ServiceModel.Description.MetadataExchangeClientMode is MetadataExchangeClientMode.MetadataExchange.

To download metadata but not resolve the information into ServiceEndpoint objects, use the System.ServiceModel.Description.MetadataExchangeClient directly.

public:
 static System::ServiceModel::Description::ServiceEndpointCollection ^ Resolve(System::Collections::Generic::IEnumerable<System::ServiceModel::Description::ContractDescription ^> ^ contracts, Uri ^ address, System::ServiceModel::Description::MetadataExchangeClientMode mode);

public static System.ServiceModel.Description.ServiceEndpointCollection Resolve (System.Collections.Generic.IEnumerable<System.ServiceModel.Description.ContractDescription> contracts, Uri address, System.ServiceModel.Description.MetadataExchangeClientMode mode);

static member Resolve : seq<System.ServiceModel.Description.ContractDescription> * Uri * System.ServiceModel.Description.MetadataExchangeClientMode -> System.ServiceModel.Description.ServiceEndpointCollection

Public Shared Function Resolve (contracts As IEnumerable(Of ContractDescription), address As Uri, mode As MetadataExchangeClientMode) As ServiceEndpointCollection

Parameters

Returns

A collection of ServiceEndpoint objects for the specified contract.

Exceptions

Remarks

The default settings on the System.ServiceModel.Description.MetadataExchangeClient are used to retrieve the metadata.

To download metadata but not resolve the information into ServiceEndpoint objects, use the System.ServiceModel.Description.MetadataExchangeClient directly.

public:
 static System::ServiceModel::Description::ServiceEndpointCollection ^ Resolve(Type ^ contract, Uri ^ address, System::ServiceModel::Description::MetadataExchangeClientMode mode);

public static System.ServiceModel.Description.ServiceEndpointCollection Resolve (Type contract, Uri address, System.ServiceModel.Description.MetadataExchangeClientMode mode);

static member Resolve : Type * Uri * System.ServiceModel.Description.MetadataExchangeClientMode -> System.ServiceModel.Description.ServiceEndpointCollection

Public Shared Function Resolve (contract As Type, address As Uri, mode As MetadataExchangeClientMode) As ServiceEndpointCollection

Parameters

Returns

A collection of ServiceEndpoint objects for the specified contract.

Exceptions

Examples

The following code example shows the use of the MetadataResolver to download and return metadata as a collection of ServiceEndpoint objects using an HTTP GET request rather than WS-Transfer.

// Get the endpoints for such a service using Http/Get request
endpoints = MetadataResolver.Resolve(typeof(SampleServiceClient), httpGetMetaAddress.Uri, MetadataExchangeClientMode.HttpGet);
Client.WriteParameters(endpoints);
ISampleService serviceChannel;
Console.WriteLine(
  "\r\nTrying all endpoints from HTTP/Get and with direct service channels...");

foreach (ServiceEndpoint point in endpoints)
{
    if (point != null)
    {
        ChannelFactory<ISampleService> factory = new ChannelFactory<ISampleService>(point.Binding);
        factory.Endpoint.Address = point.Address;
        serviceChannel = factory.CreateChannel();
        Console.WriteLine("Client used the " + point.Address.ToString() + " address.");
        Console.WriteLine(
          serviceChannel.SampleMethod(
            "Client used the " + point.Address.ToString() + " address."
          )
        );
        factory.Close();
    }
}

Remarks

Use the Resolve method to specify a contract, and address, and the download mechanism to use.

The default settings on the System.ServiceModel.Description.MetadataExchangeClient are used to retrieve the metadata.

To download metadata but not resolve the information into ServiceEndpoint objects, use the System.ServiceModel.Description.MetadataExchangeClient directly.

public:
 static System::ServiceModel::Description::ServiceEndpointCollection ^ Resolve(System::Collections::Generic::IEnumerable<System::ServiceModel::Description::ContractDescription ^> ^ contracts, Uri ^ address, System::ServiceModel::Description::MetadataExchangeClientMode mode, System::ServiceModel::Description::MetadataExchangeClient ^ client);

public static System.ServiceModel.Description.ServiceEndpointCollection Resolve (System.Collections.Generic.IEnumerable<System.ServiceModel.Description.ContractDescription> contracts, Uri address, System.ServiceModel.Description.MetadataExchangeClientMode mode, System.ServiceModel.Description.MetadataExchangeClient client);

static member Resolve : seq<System.ServiceModel.Description.ContractDescription> * Uri * System.ServiceModel.Description.MetadataExchangeClientMode * System.ServiceModel.Description.MetadataExchangeClient -> System.ServiceModel.Description.ServiceEndpointCollection

Public Shared Function Resolve (contracts As IEnumerable(Of ContractDescription), address As Uri, mode As MetadataExchangeClientMode, client As MetadataExchangeClient) As ServiceEndpointCollection

Parameters

Returns

A collection of ServiceEndpoint objects for the specified contract.

Exceptions

Remarks

To download metadata but not resolve the information into ServiceEndpoint objects, use the System.ServiceModel.Description.MetadataExchangeClient directly.