Delagate in C#

Please read the article..

 

http://www.c-sharpcorner.com/UploadFile/de41d6/delegate-uses-in-C-Sharp/

 

Hope this will give you a bit of insight about delegates.

 

Abhishek 

Hi Pramod,

 

C# delegates are similar to pointers to functions, in C or C++. A delegate is a reference type variable that holds the reference to a method. The reference can be changed at runtime.

Delegates are especially used for implementing events and the call-back methods. All delegates are implicitly derived from the System.Delegate class.

 

 

1) When we want to create the controls dynamically, then we cannot create the events for these controls beforehand as these controls are created only on runtime. In that case, if we want to bind these controls with their respective events then we need to use delegate.

So, delegate is first and foremost used for dynamic binding of controls with their events.

 

2) Delegate is also used in multitasking using threading.

Eg: Suppose we are copying a file from C: drive to D: drive. Then a progress bar would run which would indicate from time to time that how much contents have been copied - like 20% copied, 30% copied. This thing is an example of multiswitching, since here the thread is switching between 2 seperate opertaions. Once it is copying the data from one location to another location and then it is evaluating that how much content has been copied and increasing the progress bar accordingly. But, this switching is happening so fast, that the user gets a feeling as if 2 operations are happenng simultaneously.

 

So, in the above case, we may use a thread and make it switch between 2 operations. In this case also the delegate comes into play.

 

 

http://www.codeproject.com/Articles/71154/C-Delegates-A-Practical-Example

http://www.aspdotnet-suresh.com/2013/09/C-Sharp-delegates-example-use-of-delegates-in-C-Sharp.html