OnClientTaskResizeStart
The OnClientTaskResizeStart occurs when the Task resizing is started.
The event handler receives two parameters:
The instance of the Gantt control firing the event.
An eventArgs parameter containing the following methods:
get_task returns the current moved task.
set_cancel lets you cancel the event and prevent the task moving.
get_cancel returns true if the event has been canceled.
<telerik:RadGantt RenderMode="Lightweight" runat="server" id="RadGantt1" OnClientTaskResizeStart="OnClientTaskResizeStart">
</telerik:RadGantt>
function OnClientTaskResizeStart(sender, eventArgs) {
args.set_cancel(true);
}