DELEGATES

What is Delegate?
A delegate  is similar to a function pointer in C or C++. To call the reference method using  the delegate object.The delegates typedefinition same as the Function typedefinition.


PROGRAM:(DelegateEg.cs)

using System;
delegate int NumberChanger(int n);
namespace Training
{
class DelegateEg
{
static int num=10;
public static int AddNum(int  p)
{
num+=p;
return num;
}
public static int MulNum(int q)
{
num*=q;
return num;

}
public static int getNum()

{
return num;
}
public static void Main(string []arg)
{
NumberChanger nc1=new NumberChanger(AddNum);
NumberChanger nc2=new NumberChanger(MulNum);
nc1(25);
Console.WriteLine("Value of Num:{0}",getNum());
nc2(5);
Console.WriteLine("Value of Num:{0}",getNum());

}
}
}

OUTPUT:

D:\csharp>DelegateEg
Value of Num:35

Value of Num:175


PROGRAM EXPLANATION:
        The above program explain how to use the delegates in the c#.The delegate canbe declared outside the class and to create a object to the delegate and call the function using delegate objects.