How Can I Determine if a Generic Type Implements a Specific Generic Interface Using Only its Type Name?

Determining Interface Implementation of a Generic Type

Problem:

Consider these type definitions:

public interface IFoo<T> : IBar<T> {}
public class Foo<T> : IFoo<T> {}

Objective:

How to determine if the type Foo implements the generic interface IBar when only the mangled type name is available.

Answer:

Utilizing the approach proposed by TcKs, we can employ the following LINQ query:

bool isBar = foo.GetType().GetInterfaces().Any(x =>
  x.IsGenericType &&
  x.GetGenericTypeDefinition() == typeof(IBar<>));

This query checks whether any of the implemented interfaces of the foo variable is a generic type and its generic type definition matches that of IBar. If such an interface exists, it indicates that Foo implements IBar.

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