DELEGATS,HOW WE USE IN C# PROGRAMMING?

Question

WHAT IS THE SYNTAX? COULD YOU PLEASE GIVE ME AN EXAMPLE?

Upamanyu Roy Choudhury · Answer

Hi yamini, We all know what is a function pointer in C++. Delegate is the same thing in C#, it encasupates or holds a method. It is suitable for anonymous method invocation i.e. it will be called as per situaion in the runtime and it forms the basis of event handling modeel. The event handler like say a button click is nothing but a delegate , when a click event of the button occurs the delegate is called. Below mentioned all the links shows delegate example in depth http://www.codeproject.com/Articles/71154/C-Delegates-101-A-Practical-Example http://msdn.microsoft.com/en-us/library/aa288459(v=vs.71).aspx http://geekswithblogs.net/joycsharp/archive/2008/02/15/simple-c-delegate-sample.aspx If there is any further query then keep me posted Please mark it as an answer if you find this post as useful

Vulpes · Answer

Sure, here's a simple example: using System; delegate void Greeting(string s); class Test { static void Main() { Greeting g = Hello; g += Goodbye; g("Yamini"); Console.ReadKey(); } static void Hello(string name) { Console.WriteLine("Hello {0}", name); } static void Goodbye(string name) { Console.WriteLine("Goodbye {0}", name); } } The output is: Hello Yamini Goodbye Yamini