Some examples of how the dynamic keyword works

DynamicExamples.cs

[Fact]
public void cant_pass_base_class_to_function_dynamically() 
{
    dynamic handler = new MessageHandler();
    IMessage message = new Message();
    handler.Handle(message);
}

[Fact]
public void can_pass_base_class_to_function_via_reflection() 
{ 
    var handler = new MessageHandler();
    IMessage message = new Message();
    handler.GetType().GetMethod("DoSomething").Invoke(handler, new[] { message });
}

[Fact]
public void can_pass_dynamic_type_to_funcation_dynamically() 
{ 
    dynamic handler = new MessageHandler();
    dynamic message = new Message();
    handler.Handle(message);
}