C# Generics: If T is a return type, can it also be void? How can I combine these interfaces together?

Question

I have the following interface that returns the generic parameter of type T using a callback...

public interface IDoWork
{
    T DoWork();
}
         


        

Answer 1

Unfortunately, they can't be combined.

You can see this in the framework - that's why there is a separate Task and Task class, for example.

That being said, you can often share implementations in this type of scenario by using IDoWork