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Wednesday, August 24, 2011

C# Dotnet Delegate

What is Delegate?


·         Its reference to method.

·         once method assign to delegate its work like method

·         delegate method used any other method


 Where we will use real time?


      If you want to call Function in Runtime .and to get data after you can call your function but method name you don't  know design time  but you know runtime during time  you can use "Delegate"


Different type of Delegate:


  • Single cast Delegate
  • Multicast Delegate



Single cast Delegate Syntax:


  Below are signature of single cast delegate

 Access-modifier delegate result-type identifier ([parameters]);

Access-modifier è Its Access permission for delegate (like public ,private ..,)

Delegate      è it's a Keyword

Result-type èthis is  return type (like int,string,void)

Identifier è delegate name (user define)

Parameter è run time value passing


Ex :


Way 1:


public delegate void  jsdelegate();


above example is no return type ,no parameter


Way 2:


public delegate string   jsdelegatevalue(int x,int y);


above example is string is return type and x,y is parameter


above 2 way  are delegate  declaration


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