Find all TypeSpecifications / GenericTypeInstances in an assembly

[Kevin MacAulay Vacheresse]

Hello!

I'm trying to determine all GenericTypeInstances in an assembly. 

For example,

namespace TestProgram
{
    public class TestProgram
    {
        public struct GenericType<T>

          {

              public T mGeneric;
            public int mInt;
            public T mOtherGeneric;

            }

        public static Foo()
        {
            var instance1 = new GenericType<int>();
            var instance2 = new GenericType<char>();
        }

        public static int Main()
        {
            Foo();
            return 0;
        }
    }
}

I'm looking for a mechanism to ask, 'for this assembly, give me all generic type instances' and I would expect:

• valuetype TestProgram.TestProgram.GenericType`1<int32>
  
• valuetype TestProgram.TestProgram.GenericType`1<char>
  

The only approach I can think of currently is to inspect the IL across all method bodies and then if they refer to a generic type definition, that to a GenericTypeInstance and inspect the GenericArguments. But if there is a faster solution I am very interested.

Thanks and all the best,

Kev