ServerSide Node Expand not working

[Satish]

Hi,

I have the following scenario.

Creating Treeview Control in .aspx file as follows:

                            <telerik:RadTreeView ID="WinFabExplorerMenu" runat="server" OnNodeExpand="WinFabExplorerMenu_NodeExpand" OnClientNodeClicked="ClientNodeClicked">
                            </telerik:RadTreeView>

On client side, adding node to the tree and set expand mode to server side call back. After this, when I clicked the + sign on the node, the server side node expand event not firing.

function OnFederationTileClicked(sender, args) {
    $('#collapseOne').collapse('hide');
    var tree = $find("ctl00_MainContent_WinFabExplorerMenu");
    tree.trackChanges();
    tree.get_nodes().clear();
    var node = new Telerik.Web.UI.RadTreeNode();
    node.set_text(sender.get_navigateUrl());
    node.set_category('Root');
    node.set_expanded(false);
    var attributes = node.get_attributes();
    attributes.setAttribute("Federation", sender.get_navigateUrl());
    attributes.setAttribute("Path", "Test");
    node.set_expandMode(Telerik.Web.UI.TreeNodeExpandMode.ServerSideCallBack);
    node.set_postBack(true);
    tree.get_nodes().add(node);
    tree.commitChanges();
}

[Satish]

Can someone reply to this?

Thanks
Satish

 

[Nencho]

Hello Satish,

I have investigated the described issue further and it seems like a bug. In order to overcome this behavior, you could add one Node statically in the markup and set its Visible property to false. Please consider the below implementation :

<telerik:RadTreeView ID="WinFabExplorerMenu" runat="server" OnNodeExpand="WinFabExplorerMenu_NodeExpand">
           <Nodes>
               <telerik:RadTreeNode ExpandMode="ServerSideCallBack" Visible="false"></telerik:RadTreeNode>
           </Nodes>
       </telerik:RadTreeView>

In addition, I have already forwarded this issue to our developer team.

Regards,
Nencho
Telerik

 

 

[Skb Dev]

The solution posted does not work. Will this issue be fixed?

Until it is fixed the only alternative appears to be to use OnNodeClick instead.

[Skb Dev]

The solution posted doesn't work for me.

Until the bug is fixed the only option appears to be using OnNodeClick rather than OnClientNodeClicked.