How to call a particular explicitly declared interface method in C#

Question

I have a doubt on how to call the method of particular interface (Say IA or IB or In...) in the following code. Please help me on how to call. I have commented the lines of

Answer 1

In order to call an explicit interface method you must hold a reference to that interface type or cast it:

IB ib = new Model();
ib.Display();

IA ia = (IA)ib;
ia.Display();