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TreeView - Refreshing a node''s content using ServerSideCallback

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55928 Feb 7,2007 08:09 AM UTC Feb 7,2007 11:46 AM UTC ASP.NET Web Forms (Classic) 1
Tags: Tools
Martin Imfeld
Asked On February 7, 2007 08:09 AM UTC


Populating a node on demand using server side callback is a wonderful feature. For the application I am planning to use Syncfusion's ASP.Net treeview it is mandatory, that collapsing a node will de-populate the node and re-populate it when expanded again (i.e. I need the possibility to refresh a node without having to post back the whole page to the server).

Is Syncfusion's Asp.Net TreeView capable of achieving this?

Administrator [Syncfusion]
Replied On February 7, 2007 11:46 AM UTC

Hi Martin,

Thanks for your appreciation.

Our TreeViewNode control has the property 'ExpandMode' which can be categorized into 3 types as

1.ClientSide : Default value
2.ServerSide : Causes a postback when the 'NodeExpanded' event is triggered.
3.ServerSideCallback: Callback occurs and allows to add nodes dynamically as in the Load On Demand sample.

But we do not support such property when the nodes are collapsed. I will forward a feature request regarding your requirement to our 'Essential Tools Development Team' and update the time frame within a week as when this feature can be implemented.

At present your requirement can be achieved when there is a postback.

Please let us know if you have any further concerns.



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