SYSLIB0014: WebRequest, HttpWebRequest, ServicePoint, WebClient are obsolete
The following APIs are marked as obsolete, starting in .NET 6. Using them in code generates warning SYSLIB0014
at compile time.
- WebRequest()
- System.Net.WebRequest.Create
- System.Net.WebRequest.CreateHttp
- System.Net.WebRequest.CreateDefault(Uri)
- HttpWebRequest(SerializationInfo, StreamingContext)
- System.Net.ServicePointManager.FindServicePoint
- WebClient()
Workarounds
Use HttpClient instead.
Suppress a warning
If you must use the obsolete APIs, you can suppress the warning in code or in your project file.
To suppress only a single violation, add preprocessor directives to your source file to disable and then re-enable the warning.
// Disable the warning.
#pragma warning disable SYSLIB0014
// Code that uses obsolete API.
// ...
// Re-enable the warning.
#pragma warning restore SYSLIB0014
To suppress all the SYSLIB0014
warnings in your project, add a <NoWarn>
property to your project file.
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
...
<NoWarn>$(NoWarn);SYSLIB0014</NoWarn>
</PropertyGroup>
</Project>
For more information, see Suppress warnings.
See also
Collaborate with us on GitHub
The source for this content can be found on GitHub, where you can also create and review issues and pull requests. For more information, see our contributor guide.