Hi,
Please Give me an example in ASP.NET

Hi Tom,

In Vb.net

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

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.