I need to detect when the user changes pages by clicking on a tab. If certain conditions are not met, then I want to programmatically cancel the change. I see two events that might allow me to do this.

PageIndexChanging provides a CurrentIndex, NewIndex and Cancel properties. This would seem to do what I want but it does not fire when a page tab is clicked with a mouse.

SelectedPageChanging event does fire when the user clicks on a page tab. However, it does not contain a CurrentIndex, NewIndex or Cancel property. It does not seem to meet my needs.

What event should I use to detect when a user changes page tabs with a mouse and gives me programmatic control over the change?

thanks,
pat

Hello Pat,

Thank you for writing.

SelectedPageChanging is the event you need. In the event arguments you have the page that is going to be selected (e.Page), and from the SelectedPage property of the control, you can get the currently selected page:

I hope this helps. 

Regards,
Stefan
Telerik

Yes. That does help and gets me part way to what I am trying to accomplish. From the code you posted I was able to convert to Visual Basic and get the name of the tabs. But I still do not understand how to CANCEL the change in Tabs if my criteria is not met.

How do I prevent the changing of pages in this event?

thanks,

pat

Hi,

In all cancelable events in our suite, in the event arguments there is a property Cancel. When you set it to true, you cancel the operation:

I hope that you find this information useful.  

Regards,
Stefan
Telerik