Well what you were talking about with the default constructor for "primitive types". That is a function of a struct not a primitive type. Granted that might be how it was in other languages. But test it out if you create a struct and then just initialize it and don't give it a constructor. It will be the same as doing the MyStruct m = new MyStruct. See I am not totally convinced of the primitive types in .Net yet. Because all languages have to compile to the same primitive types. So when C# is working with uint VB is working with System.UInt32 and so on. by the way "int" does have a class it is System.Int32 and what looks like a primitive type to C# is actually something totally different to VB such as the uint I mentioned up above because VB doesn't have support for uint. And if they were not in class form VB would not be able to access them.