Add trigger to UpdatePanel programmatically

Posted on 16th Feb 2014 07:03 pm by admin

Hi,I'm working on a website which uses AJAX and Masterpages. What I have is an AJAX UpdatePanel which contains the ContentPlaceHolder on the MasterPage.However, on one page I have a FileUpload control, which means I have to add the Submit button as a Postback trigger to the UpdatePanel, otherwise the file upload will not work. I've tried doing this both from the MasterPage code file and the Page code file itself without any luck...The code from my masterpage attempt: If Page.Request.RawUrl.Contains("UploadPage.aspx") Then
Dim trigger As UpdatePanelControlTrigger = New PostBackTrigger()
Dim s As Button = page.FindControl("submitBut")
trigger.ControlID = s.ID
up.Triggers.Add(trigger)
End IfWhere up is the id for the update panel.I get an error message saying: A control with ID 'submitBut' could not be found for the trigger in UpdatePanel 'up'.Any help would be greatly appreciated.Thanks in advance
Filed under: updatepanel add trigger programmatically

Your Answer:

Login to answer

Other forums

HeaderSelectedCssClass not working
I have an accordian where I have a drop down list in the first pane and a grid in the second pane.

Sharing PHP Sessions Across Domains
I am in the process of writing a script to share a php session across various domains I have.
The

PayPal Redirect Issue
When I have my paypal button set so that is redirects to http://empiremarketing.ca/order.php,it work

using explode() to fill in checkboxes
Hi

I have a field stored in a table that contains regions in the UK separated by commas. Ther

Need help with an email blocker for a guessbook
I am new with php and here is a simple guessbook page but I am being hit with spam from a group of t

Variable uses and placement
I'm new to PL/SQL and am trying to learn about variable valid uses/placement (any pointers to any do

Operator precedence assistance.
I did a quick Google search and couldn't quite find the answer I wanted in terms I could understand,

whats wrong with my code please help!!!
this is the error


Warning: mysql_close(): supplied argument is not a valid MySQL-Link res

Filtering an Array Based on Value
I have a very simple script set up that pulls data from a database and is output using this code:

Table Control
Hi Guru's,

I've created a Module pool program, which contains the Table Control.