private void BatchNumber_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
cbb_DayNumber.Items.Clear();
cbb_DayNumber.SelectedIndex = -1;
int chosenBatchNr = int.Parse(cbb_BatchNumber.SelectedItem.ToString());
List <int> days = batchRepo.GetDayNrByBatchNr(chosenBatchNr);
foreach (int day in days)
{
cbb_DayNumber.Items.Add(day);
}
}
