|
RadTreeView version
|
6.2.2
RadTreeView AJAX (Prometheus)
Telerik.Web.UI 2007.3.1425
|
| .NET version |
2.0
|
| Visual Studio version |
VS2005
|
| programming language |
C#
|
| browser support |
all browsers supported by RadControls
|
PROJECT DESCRIPTION
We often receive inquiries about how to show a "Loading..." message when the TreeNodes are being expanded via ExpandMode.ServerSide. The approach is quite straightforward:
ASPX:
| <telerik:RadTreeView ID="RadTreeView1" |
| runat="server" |
| OnClientNodeExpanding="onExpanding" |
| OnNodeExpand="RadTreeView1_NodeExpand"> |
JavaScript:
| <script type="text/javascript"> |
| function onExpanding(sender, eventArgs) |
| { |
| var element = eventArgs.get_node().get_textElement(); |
| element.innerHTML = "<b>Loading...</b> " + eventArgs.get_node().get_text(); |
| } |
| </script> |
ASPX:
| <rad:RadTreeView ID="RadTreeView2" |
| BeforeClientToggle="BeforeToggle" |
| runat="server"> |
| </rad:RadTreeView> |
JavaScript:
| <script> |
| function BeforeToggle(node) |
| { |
| if(!node.Expanded) |
| node.TextElement().innerHTML = "<B>Loading...</B>"; |
| return true; |
| } |
| </script> |