As you may notice the SimpleClient class is a generic class (more about generics you can read at MSDN - http://msdn.microsoft.com/en-us/library/ms379564(VS.80).aspx).

T is a generic type parameter that is used further by server side and client side compilers. You can think about T like a real type that you can specify at the time of the class use. For instance,

SimpleClient client = new SimpleClient();

In this sample the T will represent type string and the code below

T message = (T)formatter.Deserialize(memStream);

will have the same effect as if you was wrote

String message = (String)formatter.Deserialize(memStream);.

But using generic to declare the SimpleClient class allows you to reuse the class implementation with different types.

Regards,
Anton

what is “T” ???