Value type and reference type problem

Question

Hi I\'m trying to do a simple swap of two objects.My code is

void Main()
{
  object First = 5;
  object Second = 10;

  Swap(First, Second);
  //If I display res         


        

Answer 1

Rather than passing the references to the objects by value you need to pass them by reference. In other words, you need to pass a reference to the reference to the object.

This is achieved using the ref keyword.

E.g.

private static void Swap(ref object First, ref object Second)
{
  object temp = First;
  First = Second;
  Second = temp;
}