Convert a IUserTypeUsage and/or an IPredefinedTypeUsage to an IDeclaredType

How can I go about translating a "TypeUsage" object into a "IDeclaredType" object? I'm trying to see if a method's parameter is derived from EventArgs, but all of the methods I see to accomplish this (e.g. in DeclaredTypeExtensions) operate on IDeclaredType objects.


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I think what you need to do is get the parameters from the IFormalParameterList, which will give you a list of ICSharpParameterDeclaration instances. Instead of going to the ITypeUsage, you can get the DeclaredElement directly from the ICSharpParameterDeclaration.



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