public async Task <IActionResult> OnPostRequalifyAsync(int teamId)
        {
            Team = await _context.Teams.FindAsync(teamId);

            if (Team != null)
            {
                await TeamHelper.SetTeamQualificationAsync(_context, Team, false);
            }

            return(RedirectToPage("./Index"));
        }
        public async Task <IActionResult> OnPostDisqualifyAsync(int teamId)
        {
            Team = await _context.Teams.FindAsync(teamId);

            if (Team != null)
            {
                await TeamHelper.SetTeamQualificationAsync(_context, Team, true);
            }

            IEnumerable <string> addresses = Enumerable.Empty <string>();

            addresses = await _context.TeamMembers
                        .Where(tm => (tm.Team.Event == Event && tm.Team.ID == Team.ID))
                        .Select(tm => tm.Member.Email)
                        .ToListAsync();

            if (MailSubject?.Length > 0)
            {
                MailHelper.Singleton.SendPlaintextBcc(addresses, MailSubject, MailBody);
            }
            else
            {
                var DefaultMailBody =
                    "Your team has been disqualified from the event. You are " +
                    "welcome to continue solving puzzles for fun, but your " +
                    "team will no longer appear in the final standings and is " +
                    "not eligible for any awards or prizes that the event may " +
                    "offer. If you have any questions, please contact " +
                    (Event?.ContactEmail ?? "*****@*****.**");

                var DefaultMailSubject = "[" + Event.Name + "]" +
                                         "[" + Team.Name + "] Disqualified from event";

                MailHelper.Singleton.SendPlaintextBcc(
                    addresses,
                    DefaultMailSubject,
                    DefaultMailBody);
            }

            return(RedirectToPage("./Index"));
        }