/// <summary>
/// Compares this instance to a specified Branch and returns an indication
/// of their relative values.
/// </summary>
///
/// <param name="obj">
/// The Ordered-Dish to compare with this instance.
/// </param>
///
/// <returns>
/// A 32-bit signed integer that indicates whether this instance precedes, follows,
/// or appears in the same position in the sort order as the value parameter.Value
/// Condition Less than zero This instance precedes obj. Zero This instance has
/// the same position in the sort order as obj. Greater than zero This instance
/// follows obj.-or- obj is null.
///</returns>
public int CompareTo(object obj)
{
return(ItemID.CompareTo(((Ordered_Dish)obj).ItemID));
}