New to Telerik UI for ASP.NET AJAX? Start a free 30-day trial

OnClientExpanded

The OnClientExpanded client-side event handler is called when a pane has just been expanded. The expansion can occur because of a user action such as clicking an expand button or sliding zone tab, on page load, or as the result of a a call to a client-side method.

The OnClientExpanded event is supported by RadPane and RadSlidingPane .

The following parameter is passed to the event handler:

sender is the pane that is has just been expanded.

The following example uses the OnClientExpanded event to update the content of the pane:

ASP.NET

<script type="text/javascript">
	function countExpands(pane)
	{
		// expandCount is a custom variable
		var count = pane.expandCount;
		if (count)
			count = count + 1;
		else
			count = 1;
		pane.expandCount = count;
		var id = pane.get_id();
		if (id == "RadPane2") // RadPane
			pane.set_content("This pane has expanded " + count + " times.");
		else // RadSlidingPane
			pane.setContent("This pane has expanded " + count + " times.");
	}
</script>
<telerik:RadSplitter RenderMode="Lightweight" runat="server" id="RadSplitter1" Width="90%" Orientation="Horizontal" >
 <telerik:RadPane runat="server" id="RadPane1" Height="80px" >
   <telerik:RadSlidingZone runat="server" id="RadSlidingZone1" >
	 <telerik:RadSlidingPane runat="server"
	   Title="Pane1"
	   id="SlidingPane1"
	   Height="50px"
	   OnClientExpanded="countExpands" >
	   This pane has expanded 0 times.
	 </telerik:RadSlidingPane>
	 <telerik:RadSlidingPane
	   runat="server"
	   Title="Pane2"
	   id="SlidingPane2"
	   Height="50px"
	   OnClientExpanded="countExpands">
	   This pane has expanded 0 times.
	 </telerik:RadSlidingPane>
   </telerik:RadSlidingZone>
 </telerik:RadPane>
 <telerik:RadSplitBar runat="server" id="RadSplitBar1" CollapseMode="Both"  />
 <telerik:RadPane
   runat="server"
   id="RadPane2"
   Height="90px"
   OnClientExpanded="countExpands">
	 This pane has expanded 0 times.
 </telerik:RadPane>
</telerik:RadSplitter>

OnClientExpanded

See Also