Hello everyone,

 I have an Inftragistics tree control in my application that is configured to do load on demand with manualsmartcallbacks. I would also like to give my users the ability to drag and drop elements in the tree. After the drop has occured I add the dropped node as a child of the target node; after whice I use javascript to expand the target node.

Everything operates fine with one exception. Everytime I do a drag/drop, I notice that my browser (IE7) gets stuck loading something. The problem goes away once I expand/collapse any node in the tree. Unfortunatly if I don't do this before I try to do anything else on the tree (like delete a node), then I get a System.Data stack overflow exception. I know the problem exists with adding the node because if I remove that code the problem does away. Below is the drop event handler on my tree.

function uwtFolders_Drop(oTree, oNode, oDataTransfer, oEvent)

                  //UpdateFolder(GetWorkspaceId(),oNode.getTag(),oDataTransfer.sourceObject.getTag(),oDataTransfer.sourceObject.getText());

                  // newNode.setTag(oDataTransfer.sourceObject.getTag());

                  // MoveNodes(newNode,oDataTransfer.sourceObject);

                  //oNode.setExpanded(true);

And here is the tree:

<ignav:UltraWebTree id="uwtFolders" runat="server" Cursor="Default" ForeColor="Black" Font-Size="8pt"

Font-Names="Verdana" BorderColor="Pink" BorderStyle="None" Height="400px" Width="300px" Indentation="20"

WebTreeTarget="ClassicTree" LoadOnDemand="ManualSmartCallbacks" CompactRendering="False" EnableViewState="False"

SingleBranchExpand="True" DataKeyOnClient="true" AllowDrag="true" AllowDrop="true">

<Images>

<CollapseImage Url="./images/exp.gif" />

<ExpandImage Url="./images/col.gif" />

</Images>

<ClientSideEvents InitializeTree="uwtFolders_InitializeTree" NodeClick="uwtFolders_NodeClick" AfterNodeUpdate="uwtFolders_AfterNodeUpdate" Drop="uwtFolders_Drop"/>

</ignav:UltraWebTree>