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

You need to pass by reference.

Here's some extra info on pass-by-refence, pass-by-value: http://www.yoda.arachsys.com/csharp/parameters.html, try this:

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

  Swap(ref First, ref Second);
  //If I display results it displays as 
  //Value of First as 5 and Second as 10
}


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