I built a component (inherited from Component), then I inherited from that class, added a property and a few other things, then inherited from that class. Looks something like this:



ConcreteClass -> Inherits MiddleClass -> Inherits BaseClass -> Inherits Component



The concrete class doesn't have a designer file, I just created a class and set the inheritance. When I set a property in the property window, it serializes the code to main file (the only file). I'd like it to serialize to a designer file. How do I get VS to do this? I tried just creating a designer file myself (with file name of ConcreteClass.Designer.vb) and in the same namespace and as a partial class....no joy. What's the trick to using designer files?