private void SaveNewAndUpdatedCopies()
{
foreach (var item in _itemCopiesViewModel.Values)
{
if (item.CopyNo == 0) // => New Copy
{
var newCopy = _item.AddCopy();
item.CopyNo = newCopy.CopyNo;
}
if (item.IsBorrowed != _item.Copies[item.CopyNo].IsBorrowed)
{
if (item.IsBorrowed)
{
_item.BorrowCopy(item.CopyNo);
}
else
{
_item.ReturnCopy(item.CopyNo);
}
item.BorrowingDate = _item.Copies[item.CopyNo].BorrowingDate;
item.BorrowingPeriod = _item.Copies[item.CopyNo].BorrowingPeriod;
}
}
}