Question

i really gotta confused ..

1. delegates are class or only a type. ??
2. is it necessary for a delegate to be same as a function or function has to save as delegate

Please bear me i am new for .net

Answer 1

Maybe you should take a look at http://msdn.microsoft.com/en-us/library/ms173171.aspx

Basically Delegates are very similar to function pointers. They are like placeholders for a function. So e.g. if you want to write a class which can be customized to use different kinds of sort functions, you could create a delegate and later on fill it with a certain method.