Question

I don’t mean overloading. This might include new Types of classes which I haven’t created yet.

EDIT:
I want to create a method which will return a value of the type it gets as a parameter. I can get a parameter of type object, but I don’t want to return it that way and then cast, I want the return-value itself to be of the same type as the parameter.

Answer 1

You can create a generic method which returns a type to be determined. As long as you declare your new classes correctly then they should work.

There are a number of ways of doing this, a search for return generic type c# turns up several different techniques of varying complexity. Fundamentally you have:

public T DoStuff<T>()
{
...
}

however, the “…” is the bit that depends on your application.