In my SharePoint 2010 visual web part, I have two SharePoint DateTime Picker controls which is used to add new appointment to the appointment schedule calendar.
Here, one datetime picker control is for
AppointmentStart and other for
AppointmentEnd. I need to check if there is already appointment existing for the selected period.
I need to validate the date and time selected in the selected changed event. I could get
OnDateChanged event at server side but here i couldn't validate the time part. How can this be done?