Question

I’m looking for the is operator, except that the type operand (right) is dynamic.

public static bool Is(this object value, Type type)
{      
  if (type == null) throw new ArgumentNullException(type, "type");
  if (value == null) return false;

  var valueType = value.GetType();
  return valueType == type || valueType.IsSubclassOf(type)
    || valueType implements interface
}

Is there a simpler way of doing it?

I tried using IsAssignableFrom, but it doesn’t seem to be working:

var x = "asdf";
Console.WriteLine(x.GetType().IsAssignableFrom(typeof(object)));
Console.WriteLine(x is object);

Answer 1

It sounds like you are looking for IsAssignableFrom:

type.IsAssignableFrom(value.GetType())