Question

If you consider:

class A : IInterface { }

at runtime:

A instance = new A();

instance.GetType(); // returns "A"

or

IInterface instance = new A();

instance.GetType(); // returns "A"

or

object instance = new A();
instance.GetType(); // returns "A"

Question: How to get IInterface as Type ?

Answer 1

instance.GetType().GetInterfaces() will get all the interfaces implemented or inherited by the instance type (Type.GetInterfaces Method).