How to cast Object to its actual type?

Question

If I have:

void MyMethod(Object obj) {   ...   }

How can I cast obj to what its actual type is?

Answer 1

If multiple types are possible, the method itself does not know the type to cast, but the caller does, you might use something like this:

void TheObliviousHelperMethod(object obj) {
    (T)obj.ThatClassMethodYouWantedToInvoke();
}

// Meanwhile, where the method is called:
TheObliviousHelperMethod(obj);

Restrictions on the type could be added using the where keyword after the parentheses.