public object ConvertBack(object obj, Type targetType, object parameter)
{
if (((Appointment)parameter).Reminder != null)
{
DataRow appointmentRow = ((DataRowView)storage.GetObjectRow((Appointment)parameter)).Row;
appointmentRow["AlertTime"] = ((Appointment)parameter).Reminder.AlertTime;
appointmentRow["TimeBeforeStart"] = System.Convert.ToInt32(((Appointment)parameter).Reminder.TimeBeforeStart.TotalSeconds);
}
return(obj);
}