hi, I need help on interface.

I want something like interface, any class implements this interfaces HAS to
do implement method / property declared in this interface.

As there already many functions, I do not want to rewrite all of them. Can I
somehow declare a method which does not care about fucntion parameter list?
Any parameter list is fine for it, it only restrict the return type.

I am not sure if that is possbile.

thanks.

Here is an smaple:

 Class A { pubic int F(int a) {... } }
 Class B { public int F(string s, a) {.. } }

I want a interface like

 interface IA { int F(..); }

so that
 Class A : IA
 Class B : IB

won't complain.

Thanks again.