public void Confirm(int UserId)
 {
     foreach (DataRowView Cursor in PreviousStock.DefaultView)
     {
         int ID = Convert.ToInt32(Cursor["ID"]);
         ReceiveDoc.SetAverageCostByReceiveDoc(ID, NewUnitCost, UserId);
         ReceiveDoc.SetMarginByReceiveDoc(ID, Margin * 100, UserId);
         ReceiveDoc.SetSellingPriceByReceiveDoc(ID, NewSellingPrice, UserId);
     }
 }