Question

I have a generic class and a derived class as following.

public class GenericClass<T> { ... }

public class DerivedClass : GenericClass<SomeType> { ... }

How do I find the derived class via reflection? I have tried both ways below, but doesn’t seem to work.

System.Reflection.Assembly.GetExecutingAssembly().GetTypes().Where(t => typeof(GenericClass<>).IsAssignableFrom(t));

System.Reflection.Assembly.GetExecutingAssembly().GetTypes().Where(t => t.IsSubclassOf(typeof(GenericClass<>));

Answer 1

var result = System.Reflection.Assembly.GetExecutingAssembly()
    .GetTypes()
    .Where(t => t.BaseType != null && t.BaseType.IsGenericType && 
                t.BaseType.GetGenericTypeDefinition() == typeof(GenericClass<>));