Hi,
I am using UltraWebTree in an aspx page where I have a dropdown list. In the DropdownList selection_changed event I am clearing all the nodes of the UltraWebTree and the nodes are dynamically added based on the item selected in the DropDownList. When first time an Item is selected , I am able to click on any node in the tree. But when I change the selection in the dropdown( second time ) , the tree nodes are cleared and added again dynamically based on the selection which works fine, but when I click on any node it is throwing an exception, When i trace it the exception is in the function igtree_setSelectedNode(tn,nodeId).
For the very first time when tree is created with the nodes , it is working fine , I can select any node. But when I cleared all the nodes and add the nodes dynamically , if I click on any node I am getting this exception in the function igtree_setSelectedNode(tn,nodeId).
The exact line of code where it is throwing exception is shown in Bold below
{
var styleE;
styleE = igtree_currentNode;
else
styleE = igtree_getNodeSpan(igtree_currentNode)
styleE.tabIndex = -1;
nodeSpan = igtree_getNodeSpan(igtree_currentNode)
if(image!=null && image.tagName=="IMG") {
var unselectedImage = igtree_currentNode.getAttribute("igUnselImage");
In the code behind I have the code UltraWebTree1.ClearAll() to clear the nodes, after which I create the nodes again dynamically based on the Dropdown selection. I tried with UltraWebTree1.Nodes.Clear( ) but didn't help.
Please let me know why I am getting this Exception.
Thanks & Regards
Srihari Reddy
Cool. Thanks for sharing your solution in forums - and I just want to let you know that you can safely use WebAsyncRefreshPabel or asp:UpdatePanel instead of RadAjaxPanel - you will have less problems this way, because our products are specifically tested with these two ajax update panels.
I solved the problem for myself. I set the EnableOutsideScripts="True" in the RadAjaxPanel, it worked.
Thanks
Srihari Reddy .R
Hello,
Is it possible for you to remove the Telerik RadAjaxPanel control and use our equivalent - WebAsyncRefreshPanel instead? Or you can even use the stock asp:UpdatePanel control that Microsoft shipped recently - this will also be a good approach.
Now I got the exact problem for the exception. It is because of the Telerik RadAjaxPanel that I am using in my page. The UltraWebTree is also inside the RadAjaxPanel . When I removed the RadAjaxPanel , I never had the exception again. Can anyone help me how can I use the UltraWebTree inside the RadAjaxPanel control.
Hi Rumen,
For the UltraWebTree, when I set the AutoPostback to True, I didn't have this Exception. But only probelm now is, the page is getting refreshed when I click on any node or when I expand or collapse the node. I included the control ( UltraWebTree ) inside a RadAjaxPanel. But still I see that the page is getting refreshed. Please tell me if there is any other way that stops the page refresh when Autopostback is set True.