SYSLIB0063: NamedPipeClientStream constructor with isConnected is obsolete

Starting in .NET 11, the NamedPipeClientStream.NamedPipeClientStream(PipeDirection, Boolean, Boolean, SafePipeHandle) constructor is obsolete. Calling this constructor in code generates warning SYSLIB0063 at compile time.

Reason for obsoletion

The isConnected argument on this constructor has no effect. To avoid confusion, use the constructor that omits this argument.

Workaround

Use NamedPipeClientStream.NamedPipeClientStream(PipeDirection, Boolean, SafePipeHandle) instead.

Suppress a warning

If you must use the obsolete API, 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 SYSLIB0063

// Code that uses obsolete API.
// ...

// Re-enable the warning.
#pragma warning restore SYSLIB0063

To suppress all the SYSLIB0063 warnings in your project, add a <NoWarn> property to your project file.

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
   ...
   <NoWarn>$(NoWarn);SYSLIB0063</NoWarn>
  </PropertyGroup>
</Project>

For more information, see Suppress warnings.