So I can set the date format on the Calendar Extender to it displays just the month, but you would still have to select the Year, then the Month, then the Day.
I would like to just select the Year, then the Month.
<cc2:CalendarExtender ID="DateOfReleaseCalendarExtender" runat="server"
TargetControlID="DateOfReleaseTextBox"
Format="MMMM yyyy" />
That is not a built-in feature, no. You'll have to extend it yourself. I would probably hook into the Javascript events--whichever one you think makes sense in your situation.