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What is boxing and unboxing explain with example?

Posted By :Rama Krishna     Posted Date :July 23, 2009    Points :10   Category :.NET Framework 
The example

class Test
{
static void Main() {
int i = 1;
object o = i; // boxing
int j = (int) o; // unboxing
}
}

An int value can be converted to object and back again to int.
This example shows both boxing and unboxing. When a variable of a value type needs to be converted to a reference type, an object box is allocated to hold the value, and the value is copied into the box.

Unboxing is just the opposite. When an object box is cast back to its original value type, the value is copied out of the box and into the appropriate storage location.

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What is concept of Boxing and Unboxing ?

  
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What is boxing and unboxing?

  
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