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); }