Practical advantage of generics vs interfaces

Question

What would be a practical advantage of using generics vs interfaces in this case:

void MyMethod(IFoo f) 
{
}

void MyMethod(T f) : where T : IFoo
{
         


        

Answer 1

The interface method will supply you an f of type IFoo, whereas the generic version will supply you a type T with the constraint that T has to implement IFoo.

The second method would allow you to have some kind of lookup depending on T, as you have a concrete type to work with.