There is two type datatype available Value and reference 
type . value are stored in stack and reference type used 
in  heap . when we copy data from stack memmory to heap it 
call Boxing . 


Int32 x = 10;         object o = x ;  // Implicit 
boxing               
 Int32 y = 10;      
   object obj = (object) y; // Explicit Boxing


Rahul Tripathi 
raultripathi@myway.com

Changing Value types i.e.,int,double etc in to reference 
type i.e., object is called boxing

it is implicit convertion for value type to refference type

int x=10;
object y;
x=y;//boxing

Boxing is implicit conversion of value type to type object.

ex: 
    int i = 123;
    int j = i;    // boxing