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Christian Nagel shows us another neat trick we can expect out of C# generics:

The declaration

public delegate void EventHander<S, T>(S sender, T args) where T : EventArgs;

also shows a big difference to the template implementation of C++. With C# generics it is possible to define requirements of generic types, such as T needs to be of type of EventArgs (or derived from this class). With C++ templates we just find out that a type doesn't fulfill the requirements when compiling the template using the specific type. Often the compiler error messages with many, many lines are not easy to read.

Very nice. I was an STL junkie I remember all the nasty errors produced by the compiler when you did something wrong. I really like the way that reads too.