Boxing: Boxing refers to the process of moving from a value type to reference type.
Un-Boxing: Un-Boxing refers to the process of moving from a reference type to value type.
Ex:
Public void BoxingUnbox()
{
int i = 10;
object obj = i;//boxing
int j = (Int32)(obj);//un-boxing
}
But in context of performance using boxing and unboxing is not a good practice.
Now below code illustrate the boxing and simple assignment of value by showing the timer. The code is tested on 10000 values. See below code:
class Program
{
static void Main(string[] args)
{
Console.WriteLine(“Enter choice box/nobox”);
string readkey = Console.ReadLine();
if (readkey == “box”)
{
Stopwatch obj = new Stopwatch();
obj.Start();
for (int start = 0; start <= 10000; start++)
{
BoxUnbox.Program obj1 = new Program();
obj1.box();
}
Console.WriteLine(obj.Elapsed.ToString());
Console.ReadLine();
}
else
{
Stopwatch obj = new Stopwatch();
obj.Start();
for (int start = 0; start <= 10000; start++)
{
BoxUnbox.Program obj1 = new Program();
obj1.simpleassignment();
}
Console.WriteLine(obj.Elapsed.ToString());
Console.ReadLine();
}
}
public void box()
{
int i = 123;
object j = i;
}
public void simpleassignment()
{
int i = 123;
int j = 123;
}
}
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