// Read all city IDs from file into list
private void populateFavouriteCityIds()
{
favCityIds = new List <int>();
//Gets all users favourites
favCityIds = DataUtilities.GetFavouriteCityIDsFromDB(user.Username);
Console.WriteLine();
}
//Check IDs in file and see if the specified ID is already in the file
private bool alreadyFavourite(int id)
{
return(DataUtilities.GetFavouriteCityIDsFromDB(user.Username).Any(_id => _id == id));
}