Difference between delegates and events?

Question

Sujeet Suman · Answer

Santhosh if you want to hear in a single line then : Delegate is a C# type where as event is a C# modifier. Now in details: - EVENT: In your application, you might want an action to be performed on click of a button. This button click is an event. Likewise you might define any number of events as per your need. DELEGATE: When an event fires, an appropriate action has to be taken. This action is triggered with the help of delegates. If this is helpful for you then please accept my Answer .

Priyaranjan K S · Answer

Hi Santhosh , You may go through these links for a clear understanding : http://www.codeproject.com/Articles/4773/Events-and-Delegates-simplified http://www.codeproject.com/Articles/85296/important-uses-of-Delegates-and-Events#Difference between delegates and events http://www.codeproject.com/Articles/85296/important-uses-of-Delegates-and-Events Thanks, Priyan If you found this useful Please mark this as Answer

Nilesh Jadav · Answer

Hey ! Delegate: A delegate in C# is similar to a function pointer in C. A delegate object holds the reference of one or more methods. Delegate creation is the four steps process. Declaration of delegate Delegate object creation Point the reference to the method. Invoke delegate A delegate object doesn't care about the class in which the function exists. There is only one restriction that the delegate signature and the function signature should be same otherwise delegate object can’t hold the reference of the method which doesn't have the same signature. Signature means return type and parameters. Example public class Math { public static int Add(int i, int j) { return i + j; } } class DelegateAndEvent { //Delegate Declaration public delegate int MathFunctions(int i, int j); static void Main() { //Delegate object creation. MathFunctions MathFun = null; //Point the reference to the method. MathFun += Math.Add; // Invoke delegate. int value = MathFun.Invoke(10, 20); Console.WriteLine(value.ToString()); Console.ReadLine(); } } Events: Event is a mechanism by which a class can send notification to its client. For example, you have an application to perform certain operation, if an operation is failed then the application send the notification to log file, printer, fax, email etc. Events are declared using delegates. Without delegate, we can not create Events. Read this Full Article that describes much more about Delegates and Events with enhanced example : http://einterviewquestions.blogspot.in/2012/12/difference-between-delegate-and-events.html

Ravi Patel · Answer

Hi Santosh, Basically, events provide for a tightly coupled publish subscribe paradigm, while delegates provide for a much more loosely coupled design. for more details check the following link http://www.akadia.com/services/dotnet_delegates_and_events.html

Rajeesh Menoth · Answer

Hi Santhosh Mothe, Check the following reference : http://csharpindepth.com/Articles/Chapter2/Events.aspx http://stackoverflow.com/questions/29155/what-are-the-differences-between-delegates-and-events?lq=1 If this answer is helpful.please accept it..!!

Difference between delegates and events?

Answers (5)