Hello,

I have a web form with a TreeView and a DetailsView. The DetailsView contains Textboxes with Validation controls associated with them. Validation works for the 'save', 'edit' and 'cancel' Buttons on the DetailsView control (or any other control on the page for that matter), however, the TreeNodes of the TreeView do not cause validation.

How do I get the TreeView and/or TreeNodes to cause validation? 

Any hints would be greatly appreciated.

Thanks,

Jeff 

Hi,

I'm not sure if I follow you. Do you want the TreeView to trigger the validation. For example, the asp.net web application starts to validate your textbox only when one of the TreeNode is clicked?

Thanks for the reply Zhao,

Let me try to specify. The DetailsView has TextBoxes with Required Field Validation Controls.
If I try to save the data in the DetailsView without completing a field, a javascript popup window says,"You forgot to enter a required field" and the ValidationSummary on the page will be populated with a list of required fields not entered.
In addition, every other control on the page (with the exception of the TreeView control) will cause the javascript popup and ValidationSummary to show if all of the fields are not completed.
It's seem as thought the TreeView control should have a CausesValidation property, but it does not.

I hope this clarifies.
Thanks,
Jeff

 I too just ran into this problem. My page is divided into 2 section, one with the treeview and the other with fields pertinent to the selected item in the treeview. As it stands Treeview does not have a causes validation attribute which allows users to navigate to another node and leave invalid information for the node they were previously on.

I haven't found a satisfactory solution yet.

Let me know if you find anything.

Thanks,
Jeff

 What I've resorted to doing is adding a button with the text "Apply" to the page. This way users may select an item in the treeview, enter information in the available fields and then click apply to save the changes. If the user selects another item in the treeview without first clicking apply, I'm notifying the user that the information they changed has been discarded.
 

While this is by no means a solution to the problem as it involves an extra click from the user and an extra post back, it's what I've had to resort to in the mean time.