How to check if a type is a TypeBuilder or contains a TypeBuilder generic parameter

[2A5F]

How to check if a type is a TypeBuilder or contains a TypeBuilder generic parameter

[KennethHoff]

var isTypeBuilder = x is TypeBuilder || x.GetType().GetGenericArguments().Any(a => a is TypeBuilder);

Does this work? If not, I don't think it's too far off - assuming I understood the question correctly.

[2A5F]

Is there a way to check is TypeBuilderInstantiation directly, generics may be nested very deeply

[KennethHoff]

x is TypeBuilderInstantiation

the is pattern supports just mentioning the Type. I'm not too knowledgable about Reflection - hadn't even heard about TypeBuilder before this post.

You could recursively look through the GetType().GetGenericArguments() lists and then do something if any of them are whatever you need.

[2A5F]

TypeBuilderInstantiation is internal, and most of its methods throw NotSupportedException, but fortunately GetGenericArguments does not

[2A5F]

https://source.dot.net/#System.Private.CoreLib/src/libraries/System.Private.CoreLib/src/System/Reflection/Emit/TypeBuilderInstantiation.cs