Hello,
It's difficult to say what might be causing the issue, without any context of how exactly the TreeView is DataBound, what is used inside the WebService, and what actions are triggered on the button click. It would be best if you could send us a runnable sample page that we can debug locally. You can open a support ticket and attach the project there.
On a side note, if you are building the TreeView manually, and then the nodes are cleared, it appears that the issue might not be caused by the TreeView control. Could you also try to switch the RadTreeView with the ASP.TreeView control to see if the issue is reproduced?
Regards,
Bozhidar
Telerik
It's difficult to say what might be causing the issue, without any context of how exactly the TreeView is DataBound, what is used inside the WebService, and what actions are triggered on the button click. It would be best if you could send us a runnable sample page that we can debug locally. You can open a support ticket and attach the project there.
On a side note, if you are building the TreeView manually, and then the nodes are cleared, it appears that the issue might not be caused by the TreeView control. Could you also try to switch the RadTreeView with the ASP.TreeView control to see if the issue is reproduced?
Regards,
Bozhidar
Telerik
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