Hello, Jean-Marc,
Indeed, the
PopupClosing event is the appropriate way to prevent closing the popup in certain conditions. Indeed, the new value is committed when the popup is closed.
However, I can suggest you to handle the Popup.
MouseDown event and detect which item was clicked and use this information in the
PopupClosing event. Please refer to the following code snippet:
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
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