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SYSLIB0037: AssemblyName members HashAlgorithm, ProcessorArchitecture, and VersionCompatibility are obsolete

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The following System.Reflection.AssemblyName properties are marked as obsolete, starting in .NET 7. Using these APIs in code generates warning SYSLIB0037 at compile time.

These properties are not a proper part of an AssemblyName instance. They don't roundtrip through AssemblyName string representation, and they are ignored by the assembly loader in .NET Core.

Workaround

Don't use these members in scenarios where it was expected for the values to be round-tripped through the string representation of the AssemblyName.

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 SYSLIB0037

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

// Re-enable the warning.
#pragma warning restore SYSLIB0037

To suppress all the SYSLIB0037 warnings in your project, add a <NoWarn> property to your project file.

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
   ...
   <NoWarn>$(NoWarn);SYSLIB0037</NoWarn>
  </PropertyGroup>
</Project>

For more information, see Suppress warnings.