Thank you for contacting us.
1. It seems that the event is triggered twice when a selection is made - I managed to confirm this behavior. We will do our best to fix it asap.
2. You can use the SelectedDates collection and SelectedDate property to keep track of the currently selected dates in RadCalendar.
3. This is strange. I did some tests, but was not able to reproduce this issue. The behavior seems to be working correctly. When I click on a date and then check the value of the FocusedDate
property and it is correct. Could you please give us more information on how to reproduce this issue?
Please write me back if you have more questions.
the Telerik team