Solved

TreeView OnTreeNodeCheckChanged problem

Posted on 2008-06-12
1
2,889 Views
Last Modified: 2013-11-26
I have a problem, it's something that shouldn't happen, I have a treeview with a bunch of branches, I have added the OnTreeNodeCheckChanged event to the tree, when that happens it will Check or UnCheck all the Child nodes, when I click on the CheckBox nothing happens, but when I select the node I just changed the event gets fired, Shouldn't the OnSelectedNodeChanged be fired by a change in Selection? Why is it not firing with my Check Change?

Please help.

Thanks,
0
Comment
Question by:victorbello
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 14

Accepted Solution

by:
Dustin Hopkins earned 500 total points
ID: 21776526
It is calling the event, but that event doesn't cause a post back and won't reload the control, which selected node change does do. So a work around is to use javascript to call the postback. Like this:
add the onclick event to your treeview:
<asp:TreeView ID="TreeView1" onClick="javascript:postbackOnCheck(event);" runat="server"  ShowCheckBoxes="All">

Then add this javascript function:

 <script type="text/javascript" language="javascript">
 
function postbackOnCheck(e) 
{ 
var isNav = (window.navigator.appName.toLowerCase().indexOf("netscape")>=0); 
var o; 
if (isNav && e != null) 
o = e.target; 
else 
o = window.event.srcElement; 
if (o.tagName == 'INPUT' && o.type == 'checkbox' 
&& o.name != null && o.name.indexOf('CheckBox') > -1) 
__doPostBack("",""); 
} 
</script>

Open in new window

0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

738 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