ASP.NET Core中添加Games属性后Tournament的Create方法失效

在.NET 7开发ASP.NET Core Web应用时，给Tournament类添加public ICollection<Game> Games { get; set; }属性后，Tournament的Create Action完全失效——提交表单只会刷新页面，根本不会执行数据创建操作。已经尝试过替换教程中的代码、移除实体类的Required特性，但问题依然存在。

问题代码行 #

public ICollection<Game> Games { get; set; }

相关实体类代码 #

using System.ComponentModel.DataAnnotations;

namespace WebApplication3.Models
{
    public class Tournament
    {
        public int TournamentId { get; set; }
        [Required]
        public string TournamentName { get; set; }
        [Required]
        public string Location { get; set; }
        //public DateTime StartDate { get; set; }
        //public DateTime EndDate { get; set; }

        public ICollection<Game> Games { get; set; }
    }
}

namespace WebApplication3.Models
{
    public class Game
    {
        public int GameId { get; set; }
        //public DateTime GameDate { get; set; }
        public string Player1 { get; set; }
        public string Player2 { get; set; }
        public string Score { get; set; }

        public int TournamentId { get; set; }
        public Tournament Tournament { get; set; }
    }
}

Tournament的Create Action代码 #

public IActionResult Create()
{
    return View();
}

// POST: Tournament/Create
// To protect from overposting attacks, enable the specific properties you want to bind to.
// For more details, see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Create([Bind("TournamentId,TournamentName,Location")] Tournament tournament)
{
    if (ModelState.IsValid)
    {
        _context.Add(tournament);
        await _context.SaveChangesAsync();
        return RedirectToAction(nameof(Index));
    }
    return View(tournament);
}

Game的Create Action代码 #

public IActionResult Create()
{
    ViewData["TournamentId"] = new SelectList(_context.Tournament, "TournamentId", "TournamentId");
    return View();
}

// POST: Game/Create
// To protect from overposting attacks, enable the specific properties you want to bind to.
// For more details, see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Create([Bind("GameId,Player1,Player2,Score,TournamentId")] Game game)
{
    if (ModelState.IsValid)
    {
        _context.Add(game);
        await _context.SaveChangesAsync();
        return RedirectToAction(nameof(Index));
    }
    ViewData["TournamentId"] = new SelectList(_context.Tournament, "TournamentId", "TournamentId", game.TournamentId);
    return View(game);
}

内容的提问来源于stack exchange，提问作者TJ_Frags