When I uncheck an item in my RadCheckBoxList I would like to update something indicating that the use no longer wishes to include this item. I figured using the SelectedIndexChanged event along with the SelectedItem.value property would be the way to go. Boy was I wrong. Works great when you check an item...when you uncheck one you get a big value of nothing.
How do I get the ID of the item that was just unchecked in a RadCheckBoxList?
3 Answers, 1 is accepted
You can achieve this requirement directly on client-side using the following event handler:
http://docs.telerik.com/devtools/aspnet-ajax/controls/checkboxlist/client-side-programming/events/onitemcheckedchanged
I hope this will prove helpful.
Regards,
Eyup
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Well, you have different solutions with the RadListBox to obtain your desired result.
For example, you can use ViewState to create a copy of your RadListBox before any user input. Then, on SelectedIndexChanged method, you compare which value has changed to get the ID of the item that was just unchecked.
Other example, you can use client-side event (in addition to Eyup link) with Ajax Request to execute server-side method, like SelectedIndexChanged. More information here : http://docs.telerik.com/devtools/aspnet-ajax/controls/ajax/client-side-programming/overview.
Let me know if you have any questions.