NodePopulating Property

This event is fired, before a tree node fetch its child nodes from the server.

Syntax

Visual Basic

'Declaration
 
Public Property NodePopulating As String

C#

public string NodePopulating {get; set;}

Example

Visual Basic

WebDataTree1.ClientEvents.NodePopulating = "WebDataTree_NodePopulating"

C#

WebDataTree1.ClientEvents.NodePopulating = "WebDataTree_NodePopulating";

JScript

// The client event 'NodePopulating' takes two parameters sender and e
// sender  is the object which is raising the event
// e is the DataTreeNodeEventArgs
function WebDataTree_NodePopulating(sender, e) {

    //Gets the node object that is populating
    var node = e.getNode();

    //Gets the text of the node
    var nodeText = node.get_text();

     if (!confirm("Are you sure you want to populate the node '" + nodeText + "'?"))
    //Cancels the NodePopulating event
       e.set_cancel(true);


}

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2