How to compare object's type with a generics type, irrelevant to generic argument?

Question

Best way to illustrate my question is with this example code:

  class Item {}
  class Container< T > {}
  class Program
  {
    static void DoSomething( ob         


        

Answer 1

Try:

typeof(Container<>) == something.GetType().GetGenericTypeDefinition()

Note that this will only return true if the actual type is Container. It doesn't work for derived types. For instance, it'll return false for the following:

class StringContainer : Container

If you need to make it work for this case, you should traverse the inheritance hierarchy and test each base class for being Container:

static bool IsGenericTypeOf(Type genericType, Type someType)
{   
  if (someType.IsGenericType 
          && genericType == someType.GetGenericTypeDefinition()) return true;

  return someType.BaseType != null 
          && IsGenericTypeOf(genericType, someType.BaseType);
}