來自數據庫的ASP.NET MVC模型

Question

我是從數據庫中創建模型的，數據庫中有表Users，Roles和UsersInRoles，這是前2個表之間的中間表。我的問題是，如何將特定用戶（角色=某些用戶）帶入表中，因為表UsersInRoles沒有添加到模型中？

public partial class Role
    {
        public Role()
        {
            this.Users = new HashSet<User>();
        }

        public int RoleID { get; set; }
        public string RoleName { get; set; }
        public string RoleDescription { get; set; }

        public virtual ICollection<User> Users { get; set; }
    }

public partial class User
    {
        public User()
        {
            this.Roles = new HashSet<Role>();
        }

        public int UserID { get; set; }
        public string Username { get; set; }
        public string Password { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }

        public virtual ICollection<Role> Roles { get; set; }
    }

public ActionResult Index()
        {
            var users = db.Users;
            return View(users.ToList());
        }

Answer 1

我承認我對HashSets並沒有太多的經驗，但是是否有任何原因導致簡單的Linq查詢無法正常工作？

var requestedUsers = from UsersInRoles 
                     in db.Users 
                     where UsersInRoles.Roles.Contains(DesiredRoleHere) 
                     select UsersInRoles;

Answer 2

我相信這會起作用...

        var usersInRole = db.Users.Where(x => x.Roles.Any(y => y.RoleId == roleid));