MultiColumnComboBox: SelectionChanged event fires only once when the SelectionMode is Multiple
If you set the SelectionMode of the control to Multiple the SelectionChanged event fires only when you select item for the first item. Each next selection won't fire the event.
To work this around use to CollectionChanged event of the SelectedItems collection of RadMultiColumnComboBox.
Posted on:16 Feb 2019 10:24
The fix for this issue will be available with R1 2019 SP expected in the next week.
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