Solved

AddHandler not working.

Posted on 2004-05-01
5
940 Views
Last Modified: 2008-10-03
Can anyone tell me why the code below is not working. When the button is clicked control does not seem to pass to the SubmitBtn_Click routine. Thanks.

Dim SubmitBtn as Button
SubmitBtn = New Button
SubmitBtn.Text = "OK"
SubmitBtn.Id = "OKButton"
AddHandler SubmitBtn.Click, AddressOf SubmitBtn_Click
Panel1.Controls.Add(SubmitBtn)
0
Comment
Question by:DColin
5 Comments
 
LVL 23

Expert Comment

by:rama_krishna580
ID: 10966958
0
 
LVL 1

Accepted Solution

by:
CouldNotFindAnyOtherUsername earned 500 total points
ID: 10967053
Hi DColin,
     What I can guess from this post and your last post regarding this problem is that the Click Event works when the page loads for the first time, but after a postback is made to the page, the click event stops working for the said button... Am i Right.. If this be the problem here's the solution:

Dynamically generated buttons should be generated in the Page_Load Function, so that after a postback, they are re-generated and the event handler re-associated.


Try changing your code as follows:

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
     ' Don't put Page.IsPostBack check here
     GenerateButton

     If not IsPostBack then
         'Your other code goes here
     End
End Sub

Private Sub GenerateButton()
     Dim SubmitBtn as Button
     SubmitBtn = New Button
     SubmitBtn.Text = "OK"
     SubmitBtn.Id = "OKButton"
     AddHandler SubmitBtn.Click, AddressOf SubmitBtn_Click
     Panel1.Controls.Add(SubmitBtn)
End Sub
0
 
LVL 1

Expert Comment

by:CouldNotFindAnyOtherUsername
ID: 10967077
If you want something detailed regarding dynamic control creation, visit the following link:

http://devcenter.infragistics.com/Articles/ArticleTemplate.ASPX?ArticleID=2149
0
 
LVL 21

Expert Comment

by:tovvenki
ID: 10967344
Hi,

try this modified code
Dim SubmitBtn as new Button
SubmitBtn.Text = "OK"
SubmitBtn.Id = "OKButton"
AddHandler SubmitBtn.Click, AddressOf SubmitBtn_Click
Panel1.Controls.Add(SubmitBtn)

it should now work.

hope that this helps you.

regards,
venki
0
 

Author Comment

by:DColin
ID: 10967463
CouldNotFindAnyOtherUsername

Taking into account my previous questions is what I call a truly holistic service. Your solution has got me one step closer to my goals. No doubt I will be back tomorrow with another question.
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Gridview selected row 9 43
How to prevent website from publishing with errors 9 43
ASP.NET MVC 2 31
jquery progress bar 3 40
I have developed many web applications with asp & asp.net and to add and use a dropdownlist was always a very simple task, but with the new asp.net, setting the value is a bit tricky and its not similar to the old traditional method. So in this a…
In .NET 2.0, Microsoft introduced the Web Site.  This was the default way to create a web Project in Visual Studio 2005.  In Visual Studio 2008, the Web Application has been restored as the default web Project in Visual Studio/.NET 3.x The Web Si…
In this video I am going to show you how to back up and restore Office 365 mailboxes using CodeTwo Backup for Office 365. Learn more about the tool used in this video here: http://www.codetwo.com/backup-for-office-365/ (http://www.codetwo.com/ba…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

815 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now