Delegate in Asp.Net

Question

Hi How To Use Delegate In Asp.Net?

tom linker · Answer

Hi Please Give me an example in ASP.NET

Satyapriya Nayak · Answer

Hi Tom In Vb.net Normal 0 Delegates : - It is a procedure pointer which stores the memory address of another procedure. It can be applied with 1.Sub procedure 2.Function procedure But not property procedure. Program Ex1 Public Class Form1 Delegate Sub abhisek( ByVal x As Integer  ByVal y As Integer ) Private Sub Button1_Click( ByVal sender As System.Object ByVal e As System.EventArgs) Handles Button1.Click Dim a As abhisek a = AddressOf rajiv a.Invoke(10 20) End Sub Public Sub rajiv( ByVal x As Integer  ByVal y As Integer ) Dim z As Integer z = x + y MsgBox(z) End Sub End Class Ex2 Public Class Form2 Delegate Sub raj( ByVal x As String ) Private Sub Button1_Click( ByVal sender As System.Object ByVal e As System.EventArgs) Handles Button1.Click Dim x As raj x = AddressOf rajiv x.Invoke( Adarsh kumar ) End Sub Private Sub rajiv( ByVal s As String ) MsgBox( Hello: & s) End Sub End Class Thanks

Jignesh Trivedi · Answer

hi A delegate is a class that can hold a reference to a method.A delegate is equivalent to a type-safe function pointer or a callback.The delegate is used to declare a reference type that can be used to encapsulate a named or an anonymous method. In asp.net we are using delegates to create custom events for custom controls. Please refer http://www.codeproject.com/Articles/13607/A-Beginner-s-Guide-to-Delegates Use of Delegate in asp.net. http://weblogs.asp.net/bhaskarghosh/archive/2008/07/10/custom-control-postback-and-events.aspx hope this will help you.