/// <summary>
/// Returns a list of friends that play a game
/// </summary>
/// <param name="userId">id of user to check his friends</param>
/// <param name="gameId">id of game that friends play</param>
/// <returns>list of friend users</returns>
public static List <User> FriendsThatPlayGame(int user, int game)
{
var tb = DbConnections.GetFriendsWhoPlayGame(user, game);
return((from DataRow row in tb.Rows select new User(row)).ToList());
}