Stop Collapsing tree node

[Tulika]

Hi,

In a scenario I need not to Collapse the Expanded node even if it has Child nodes. In previous versions it worked by calling an event 'BeforeClientToggle= BeforeClientToggle'

function BeforeClientToggle(node)   
{   
   if (node.Nodes.length > 0)   
   {   
      return false;   
   }   
}


But in Ajax version, this event is not available.

Any suggestion to this query is appreciated.

Thanks,

Tulika

[Paul]

Hello Tulika,

Please find below a sample code snippet that shows the needed approach.

<form id="form1" runat="server">
<telerik:RadScriptManager ID="RadScriptManager1" runat="server">
</telerik:RadScriptManager>

<script type="text/javascript">
    function OnClientNodeCollapsing(sender, eventArgs) {
        var node = eventArgs.get_node();
        if (node.get_nodes().get_count() > 0) {
            eventArgs.set_cancel(true);
        }
    }
</script>

<telerik:RadTreeView ID="RadTreeView1" runat="server" OnClientNodeCollapsing="OnClientNodeCollapsing">
    <Nodes>
        <telerik:RadTreeNode runat="server" Text="Root RadTreeNode1">
            <Nodes>
                <telerik:RadTreeNode runat="server" Text="Child RadTreeNode 1">
                </telerik:RadTreeNode>
                <telerik:RadTreeNode runat="server" Text="Child RadTreeNode 2">
                </telerik:RadTreeNode>
            </Nodes>
        </telerik:RadTreeNode>
    </Nodes>
</telerik:RadTreeView>
</form>

Regards,
Paul
the Telerik team

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