Check if a class is derived from a generic class

Question

I have a generic class in my project with derived classes.

public class GenericClass : GenericInterface
{
}

public class Test : GenericCla         


        

Answer 1

Simple solution: just create and add a second, non-generic interface to the generic class:

public interface IGenericClass
{
}

public class GenericClass : GenericInterface, IGenericClass
{
}

Then just check for that in any way you like using is, as, IsAssignableFrom, etc.

if (thing is IGenericClass)
{
    // Do work
{

Obviously only possible if you have the ability to edit the generic class (which the OP seems to have), but it's a bit more elegant and readable than using a cryptic extension method.