Reference to reference in C#?

Question

As we all know, C# classes object are treated as references, so what happens when you pass a reference object as a reference to a method? Say we have:

public cla         


        

Answer 1

The two concepts are not the same. A method parameter can be modified by ref regardless of whether it is a value type or a reference type.

Passing a type by reference enables the called method to modify the object refered by the parameter or to change the storage location of the parameter.

static void Main()
{
    Foo item = new Foo("aaa");
    GetByReference(ref item);
    Console.WriteLine(item.Name)
}
static void ChangeByReference(ref Foo itemRef)
{
    itemRef = new Foo("bbb");
}

this will actually print "bbb", because in this case you did not changed the objects values but you changed the object itself