Dynamic control event handler is not working

Question

1.33/5 (2 votes)

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Hi,

In the code behind I've created a link button dynamically on page load and provided a event handler as below. But when I clicked the link button it is not using the event handler.

VB

Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
dim linkbtn as new LinkButton
With linkbtn
  .Text = "Click Here"
  .Font.Underline = False
  AddHandler linkbtn.Click, AddressOf LinkBtn_Click
End With
PlaceHolder1.Controls.Add(linkbtn)
End Sub

VB

Protected Sub LinkBtn_Click(ByVal sender As Object, ByVal e As System.EventArgs)
  MsgBox("Button is clicked")       
End Sub

Posted 12-Jul-12 19:01pm

R. Ganesh Kumar IT

Updated 12-Jul-12 19:40pm

v4

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Comments

Sanjay Kunjam 13-Jul-12 1:24am

What error you are getting??

3 solutions

Solution 1

Hi,
As I think after adding the control to the place-holder you should add handler. Like:

VB

Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
dim linkbtn as new LinkButton
With lnkbtn
  .Text = "Click Here"
  .Font.Underline = False
End With
PlaceHolder1.Controls.Add(linkbtn)
AddHandler lnkbtn.Click, AddressOf LinkBtn_Click
End Sub

VB

Protected Sub LinkBtn_Click(ByVal sender As Object, ByVal e As System.EventArgs)
  MsgBox("Button is clicked")
End Sub

This is woriking for me and hope this will help you also.
All the best.
--Amit

Posted 12-Jul-12 19:30pm

_Amy

Solution 3

The problem was in declaring ID for the link button. That's why it was not working.

I've converted the time into string and specified it as ID for the link button.

Sorry & Thanks for spending time for me to solve the issue.

Ganesh

Posted 12-Jul-12 20:09pm

R. Ganesh Kumar IT

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Trak4Net · Accepted Answer · 2012-07-12T19:33:00

Below is working for me. You had a couple variable names wrong in code above. Also, I wouldn't recommend using MsgBox in server side code of web page.

VB

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

       Dim lnkbtn As New LinkButton
       With lnkbtn
           .Text = "Click Here"
           .Font.Underline = False
           AddHandler lnkbtn.Click, AddressOf LinkBtn_Click
       End With
       PlaceHolder1.Controls.Add(lnkbtn)


   End Sub

   Protected Sub LinkBtn_Click(ByVal sender As Object, ByVal e As System.EventArgs)
       Response.Write("Link Button Clicked")
   End Sub