void FilterGrid()
{
NotificationData filterNotificationData = new NotificationData();
filterNotificationData.MachineCode = filterMachine.Text.Equals(filterMachineLabel) ? null : filterMachine.Text;
NotificationData.errorCategory category = NotificationData.errorCategory.NA;
Enum.TryParse(filterCategory.Text, out category);
filterNotificationData.category = category;
filterNotificationData.FilterNotifyStart = DateTime.Parse(filterStartDate.Value.ToString());
filterNotificationData.FilterNotifyEnd = DateTime.Parse(filterEndDate.Value.ToString());
notificationGrid.ItemsSource = objGeneralDba.GetNotifications(filterNotificationData);
}