IDispatchImplAttribute API is removed
The IDispatchImplAttribute implementation has officially been removed from .NET. This type was only discoverable at run time and its removal has no impact on visible API surface area. However, if an assembly targeting .NET Framework uses this type and is loaded in .NET 8 or a later version, the runtime will throw a TypeLoadException.
Previous behavior
The IDispatchImplAttribute type could be found at run time, but none of the documented semantics of the deprecated attribute applied.
New behavior
Starting in .NET 8, attempting to load an assembly that contains this attribute throws a TypeLoadException.
Version introduced
.NET 8 Preview 6
Type of breaking change
This change can affect binary compatibility.
Reason for change
This attribute was removed as it was not longer respected and served no functional purpose.
Recommended action
Remove use of this API in assemblies that are loaded in .NET 8 and later versions.
