.NET API Catalog

IUnknownDerivedAttribute<T, TImpl>

net9.0
    namespace System.Runtime.InteropServices.Marshalling
{
    [AttributeUsage(AttributeTargets.Interface, Inherited = false)]
    [CLSCompliant(false)]
    public class IUnknownDerivedAttribute<T, TImpl> : Attribute, IIUnknownDerivedDetails
        where T, IIUnknownInterfaceType!
    {
        public Guid Iid { get; }
    }
}

Information specific to `net9.0`
Design Reviews	dotnet/runtime#79121 one year ago (Approved) dotnet/runtime#79121 one year ago (NeedsWork)
.NET	8.09.0
Assembly	System.Runtime.InteropServices , Version=9.0.0.0, PublicKeyToken=b03f5f7f11d50a3a
Referencing	The API is automatically referenced.
Platform Restrictions	The property getter is supported on all platforms.

Built-in API
Package-provided API