NodeChecking Property

This event is fired, before a change in the node check box state occur.

Syntax

Visual Basic

'Declaration
 
Public Property NodeChecking As String

C#

public string NodeChecking {get; set;}

Example

Visual Basic

WebDataTree1.ClientEvents.NodeChecking = "WebDataTree_NodeChecking"

C#

WebDataTree1.ClientEvents.NodeChecking = "WebDataTree_NodeChecking";

JScript

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

        //Gets the node object that is going to be checked
        var node = e.getNode();

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

        if (!confirm("Are you sure you want to check the node '" + nodeText + "'?"))
        //Cancels the NodeChecking 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