OnClientTaskMoving
The OnClientMoving occurs when the Task is just about to be moved.
The event handler receives two parameters:
The instance of the Gantt control firing the event.
An eventArgs parameter containing the following methods:
get_task return the current moved task.
get_start return the start time of the current task.
set_cancel lets you cancel the event and stop the task moving.
<telerik:RadGantt RenderMode="Lightweight" runat="server" id="RadGantt1" OnClientTaskMoving="OnClientTaskMoving">
</telerik:RadGantt>
function OnClientTaskMoving(sender, eventArgs) {
args.set_cancel(true);
}