reference and value tpye

Value vs Reference

Hello  @Ujjval   value type variable contain a  value that hold a value    and
reference parameters basically never pass the value of a variable used in the method calling, instead they use the variable themselves. Rather than creating a new storage for that variable in the method declaration.the very same storage space is used, so the value of the variable in the member method and the value of the reference

for example:

public void call(ref int n1, int n2)
        {
            unsafe
            {
               

              
               
                Console.WriteLine((int)&n2);
               
            }
        }
      
       unsafe  static void Main(string[] args)
        {
            int ab;
            ab = 1032;
        
            Demo dm = new Demo();
            dm.call(ref ab, ab);
            Console.ReadKey();

        }

here n2  also  contain  space in memory  but  n1  does not contain any space in memory  because address of ab(in main) and n1  is same......

http://www.albahari.com/valuevsreftypes.aspx
https://msdn.microsoft.com/en-us/library/4d43ts61(v=vs.90).aspx
http://www.codeproject.com/Articles/76153/Six-important-NET-concepts-Stack-heap-value-types


read above articles....

read this link





http://www.codeproject.com/Articles/32029/Reference-and-Value-Types-in-C



it may help you