The ASP.NET AJAX Calendar, RadDatePicker and RadDateTimePicker controls have WAI-ARIA
support which can be easily enabled by setting EnableAriaSupport="true".
For the RadDatePicker and RadDateTimePicker the property should be set for the composite picker
control and not separately for its embedded controls.
In the following demo two additional TextBoxes are added in order to show that when ARIA support for the RadCalendar is
enabled and the calendar has keyboard navigation switched on, tabbing through the calendar moves out the focus instead of navigating through the dates.
Focus the first textbox and tab through the Calendar control to see that when ARIA support for the RadCalendar is
enabled and the calendar has keyboard navigation switched on, tabbing through the calendar moves out the focus instead of navigating through the dates.