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RadTreeView disappears after node click

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Max
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Max asked on 18 Jul 2012, 11:48 AM
hI, i have a radtreeview which is populated in codebehind, with a list of objects. Thre treeview is inside a split panel. Sometimes i need to open a radwindow popup that opens another url, from a menu that lies in the same page in which the treeview is. The popup opens, i do something in that window (a different url) that causes postbacks in the popup, but not in the main page. It depends on how many postbacks i make in the popup, if i close the popup, and then click on a node in the radtreeview,  SOMETIMES it disappears. If i open the popup and make LESS postbacks, all works great. I've tried to bind the treeview into the markup, with an ObjectDataSource, and the strange behavior stops, except for a thing: now the treeview does not disappear, but collapses!

Any ideas?

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Plamen
Telerik team
answered on 23 Jul 2012, 10:34 AM
Hello,

 
Since when you bind RadTreeView into the markup it is not disappearing it seems that the unusual behavior is caused by some custom logic in the code behind binding. A change in the DataSource data may cause disappearing as well. You can refer to this on-line demo where is explained how to do the programmatic data binding.

As for the expanded state you can use the following code in order to assure it:

<DataBindings>
        <telerik:RadTreeNodeBinding Expanded="true" />
</DataBindings>

Hope this will be helpful.
Regards,
Plamen
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jlj30
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answered on 29 Jul 2015, 12:40 AM

Hi Max,

 I realize this is a few years old, but I'm experiencing almost the same issue.

My magic number is 4 - iopen the popup, perform a web service call, close the popup 4 times.

I get errors since the TreeView now appears empty.

Can I ask how you finally resolved this?

Thanks in advance.

Jim

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Plamen
Telerik team
answered on 30 Jul 2015, 05:08 AM
Hi Jim,


We are not aware of such known issue with RadTreeView so would you please elaborate a little bit how to replicate it or if it can be observed on any of our online demos.

Regards,
Plamen
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Max
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Plamen
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