public static DBdvd Edit(DBdvd dvd, int ID)
{
if (_dvdDictionary.ContainsKey(ID))
{
_dvdDictionary[ID] = dvd;
return(_dvdDictionary[ID]);
}
else
{
return(null);
}
}
public static DBdvd Delete(int ID)
{
if (_dvdDictionary.ContainsKey(ID))
{
DBdvd old = _dvdDictionary[ID];
_dvdDictionary.Remove(ID);
return(old);
}
else
{
return(null);
}
}
public static DBdvd Add(DBdvd dvd)
{
int newKey;
if (_dvdDictionary.Keys.Count() == 0)
{
newKey = 1;
}
else
{
newKey = _dvdDictionary.Keys.Max() + 1;
}
dvd.DvdID = newKey;
_dvdDictionary.Add(newKey, dvd);
return(_dvdDictionary[newKey]);
}
