Solved

TreeView OnTreeNodeCheckChanged problem

Posted on 2008-06-12
1
2,872 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
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

Space-Age Communications Transitions to DevOps

ViaSat, a global provider of satellite and wireless communications, securely connects businesses, governments, and organizations to the Internet. Learn how ViaSat’s Network Solutions Engineer, drove the transition from a traditional network support to a DevOps-centric model.

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 aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

829 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