private bool NewWarehouse(string itemID) { Warehouse newItem = new Warehouse(); //all new records will be give a negative int autoid... //when they are updated then sql will generate one for them overiding this set value... //it will allow us to give uniqueness to the tempory new records... //Before they are updated to the entity and given an autoid... //we use a negative number and keep subtracting by 1 for each new item added... //This will allow it to alwasy be unique and never interfere with SQL's positive autoid... _newWarehouseAutoId = _newWarehouseAutoId - 1; newItem.AutoID = _newWarehouseAutoId; newItem.WarehouseID = itemID; newItem.CompanyID = ClientSessionSingleton.Instance.CompanyID; newItem.IsValid = 1; newItem.NotValidMessage = "New Record Key Field/s Are Required."; WarehouseList.Add(newItem); _serviceAgent.AddToWarehouseRepository(newItem); SelectedWarehouse = WarehouseList.LastOrDefault(); AllowEdit = true; Dirty = false; return(true); }