C# Simple Delegate Example

C# Simple Delegate Example

A delegate in C# is similar to a function pointer in C or C++. Using a delegate allows the programmer to encapsulate a reference to a method inside a delegate object. The delegate object can then be passed to code which can call the referenced method, without having to know at compile time which method will be invoked.

Below C# Program Displays Results using Delegates. Here Delegate is a type which holds the method(s) reference in an object. It is also referred to as a type safe function pointer.

using System;

namespace Zappmania.Example.Delegate

 delegate int MyDelegate(int a, int b);

 public class TestClass
 
 public static void Main(string[] args)
 
 var myClassObj = new MyClass();
 var sum = new MyDelegate(myClassObj.Add);
 var multiply = new MyDelegate(myClassObj.Multiply);
 var subtract = new MyDelegate(myClassObj.Subtract);

 var sumResult = sum(23, 32);
 Console.WriteLine("Result for Add is " + sumResult);
 var multiplyresult = multiply(25, 2);
 Console.WriteLine("Result for Multiply is " + multiplyresult);
 var subtractResult = subtract(75, 42);
 Console.WriteLine("Result for Subtract is " + subtractResult);

 Console.ReadLine();

 
 

 internal class MyClass
 
 internal int Add(int a, int b)
 
 return a + b;
 
 internal int Multiply(int a, int b)
 
 return a * b;
 
 internal int Subtract(int a, int b)
 
 return a - b;
 
 
 

Result for above code is :

Result for Add is 55
Result for Multiply is 50
Result for Subtract is 33

C# Simple Delegate Example