dotnet / dotnet/winforms

Implement ISupportsErrorInfo and IErrorInfo for COM interop

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area-COM
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C#
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Description

We don't do this in our `ComWrappers` implementation (we just return an HRESULT). We would have to work with CsWin32 to either provide this or allow us to plug in exception handling that does this.

@jkoritzinsky do the source generators do this in .NET 8? Is this something we could possibly expose through a helper in .NET 9?

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