How to know if a C++/CLI reflected parameter is long or int?

Question

I'm reflecting a C++/CLI method that has the following signature:

void foo(long n);

This translates into C# as:

void foo(int modopt(IsLong) n);

How can I find if an int parameter is actually a C++/CLI long by reflection?

Answer 1

Check the ParameterInfo instance's optional custom modifiers:

bool IsLongParameter(System.Reflection.ParameterInfo p) {
   Type[] modifiers = p.GetOptionalCustomModifiers();
   return modifiers.Contains(typeof(System.Runtime.CompilerServices.IsLong));
}