This is the assembly that generally surfaces most non-generic collections such as Stack and Queue.

Non-generic collections that are used by lower-level parts of the framework, such as IList and Hashtable are surfaced by the System.Runtime assembly. The implementations for these collections live in System.Private.Corelib.

Documentation can be found at https://learn.microsoft.com/dotnet/csharp/programming-guide/concepts/collections.

• We only consider fixes to maintain or improve quality
• We consider PRs that target this library for new source code analyzers

System.Collections.NonGeneric is included in the shared framework and also provided as a NuGet package.