C sharp interface

Question

Interface is value type or reference type? please help i am totally confused. thanq.

Vulpes · Answer

An easy way to check whether a type is a value type or reference type is to run this code: Type t = typeof(someType); bool b = t.IsValueType; Console.WriteLine(b); If we substitute ITest for someType then the result is 'false' as expected.

Vulpes · Answer

That's right Javeed. It's analogous to assigning the struct to an object variable: object obj = ts; Console.WriteLine(obj.GetType()); // TestStruct

Javeed M Shaikh · Answer

good point. I just tried this : public interface ITest { } public struct TestStruct : ITest { } TestStruct ts = new TestStruct(); ITest its = (ITest)ts; its.GetType(); // this returns ValueType.

Vulpes · Answer

Even then it's still a reference type because the struct is first boxed on the heap and a reference to the boxed object is then assigned to the interface variable.

Javeed M Shaikh · Answer

I think it is both if you implement the Interface in a Struct it will be ValueType.

Vulpes · Answer

It's a reference type.