public void moveItemToSpecialIndex(int newIndex, int oldIndex)
{
var item = new ProductionlistItem(_list[oldIndex].article, _list[oldIndex].quantity);
_list[oldIndex] = null;
_list.Insert(newIndex, item);
_list.RemoveAll(x => x == null);
}
public void AddItem(ProductionlistItem item)
{
if (item == null)
{
throw new Exception();
}
if (item.quantity <= 0)
{
return;
}
_list.Add(item);
}