// RemoveSingleItem - Remove one quantity of toRemove from this order.
public void RemoveSingleItem(MenuItem toRemove)
{
// If there are no items, then do nothing.
if (OrderContents == null)
{
return;
}
// Create a list of all current item IDs.
string[] itemIDs = OrderContents.Split(',');
// Convert this item's ID into a string
// and see whether it is in the ID list.
string removeID = toRemove.ItemID.ToString();
if (itemIDs.Contains(removeID))
{
// If this is the only item, set the list to null.
if (itemIDs.Length == 1)
{
OrderContents = null;
}
else
{
// If this is the first ID, remove it
// and its trailing comma.
if (itemIDs[0] == removeID)
{
OrderContents =
OrderContents.Substring(removeID.Length + 1);
}
else
{
// Otherwise, remove it and the leading comma.
int startIdx = OrderContents.IndexOf(removeID);
OrderContents =
OrderContents.Substring(0, startIdx - 1)
+ OrderContents.Substring(startIdx +
removeID.Length);
}
}
// Update the price if possible.
if (toRemove.Price != null)
{
RawCost -= (int)toRemove.Price;
}
}
}
// ContentsToItemList - Return a list of the items referenced by
// the orderContents string.
public List <MenuItem> ContentsToItemList()
{
if (OrderContents == null)
{
return(null);
}
// Establish a database connection.
var db = new PickUpOrderDBEntities2();
// Create the list to be returned.
var itemObjects = new List <MenuItem>();
// Split the ID string. For each ID value,
// get the corresponding item and add it to itemObjects.
string[] itemIDs = OrderContents.Split(',');
foreach (string item in itemIDs)
{
int id = int.Parse(item);
itemObjects.Add(db.MenuItems.Find(id));
}
return(itemObjects);
}