MVC4到MVC5 I在MVC5中的集合

Question

以前我在编写MVC4应用程序，这些是我的类：Ticket、Category、Department、Depot和User（现在是IdentityModels.cs中的Identity User）

类之间的关系如下：

一对多用户对票证（一个用户可以打开许多票证）

一对多类别到票证（一张票证可以有一个类别）

一对一部门对用户（一个用户只能有一个部门）

一对一仓库到用户（一个用户只能有一个仓库）

我的问题是，因为我已经从MVC4升级到MVC5，MVC5用户必须从IdentityUser派生，所以我必须删除我的user.cs并将代码放入我的ApplicationUser : IdentityUser类（如下所示）

这样做之后，我的public virtual ICollection<User> Users { get; set; }或public virtual User User { get; set; }类将出现错误，因为它们没有引用任何内容（因为我已经删除了User类）。

找不到类型或命名空间名称"User"（是否缺少using指令或程序集引用？）

我需要将该代码更改为什么，以便它引用我的ApplicationUser : IdentityUser类？

IdentityModels.cs（包括从Identity user派生的新用户类）

   public class ApplicationUser : IdentityUser
    {
        public async Task<ClaimsIdentity> 
            GenerateUserIdentityAsync(UserManager<ApplicationUser> manager)
        {
            var userIdentity = await manager
                .CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
            return userIdentity;
        }
    public bool IsAdministrator { get; set; }
    [StringLength(50, MinimumLength = 1)]
    public string LastName { get; set; }
    [StringLength(50, MinimumLength = 1, ErrorMessage = "First name cannot be longer than 50 characters.")]
    [Column("FirstName")]
    public string FirstMidName { get; set; }
    public string FullName
    {
        get { return FirstMidName + " " + LastName; }
    }
    [DataType(DataType.Date)]
    [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
    public DateTime EnrollmentDate { get; set; }
    public int DepartmentID { get; set; }
    [ForeignKey("DepartmentID")]
    public virtual Department Department { get; set; }
    public int DepotID { get; set; }
    [ForeignKey("DepotID")]
    public virtual Depot Depot { get; set; }
    public virtual ICollection<Ticket> Tickets { get; set; }
}

public class ApplicationRole : IdentityRole
{
    public ApplicationRole() : base() { }
    public ApplicationRole(string name) : base(name) { }
    public string Description { get; set; }
}

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext()
        : base("DefaultConnection", throwIfV1Schema: false)
    {
    }

    public DbSet<Ticket> Tickets { get; set; }
    public DbSet<Category> Categories { get; set; }
    public DbSet<Department> Departments { get; set; }
    public DbSet<Depot> Depots { get; set; }
    static ApplicationDbContext()
    {
        Database.SetInitializer<ApplicationDbContext>(new ApplicationDbInitializer());
    }
    public static ApplicationDbContext Create()
    {
        return new ApplicationDbContext();
    }
}

Depot.cs

public class Depot
{
    public int DepotID { get; set; }
    [StringLength(50, MinimumLength = 1)]
    public string DepotName { get; set; }
    public virtual ICollection<User> Users { get; set; } <--Error
}

部门.cs

public class Department
{
    public int DepartmentID { get; set; }
    [StringLength(50, MinimumLength = 1)]
    public string DepartmentName { get; set; }
    public virtual ICollection<User> Users { get; set; } <--Error
}

Ticket.cs

public class Ticket
{
    public int? TicketID { get; set; }
    [Required(ErrorMessage = "Please enter the description")]
    public string Issue { get; set; }
    [Display(Name = "Administrator")]
    [Required(ErrorMessage = "Please select the Administrator")]
    public int IssuedTo { get; set; }
    public int Author { get; set; }
    [DisplayFormat(NullDisplayText = "No Priority")]
    public Priority Priority { get; set; }
    [ForeignKey("CategoryID")]
    public virtual Category Category { get; set; }
    public int CategoryID { get; set; }
    public int UserID { get; set; }
    [ForeignKey("UserID")]
    public virtual User User { get; set; } <--Error
}

解决方案中未包含旧的user.cs文件

public class User
{
    public int UserID { get; set; }
    public bool IsAdministrator { get; set; }
    [StringLength(50, MinimumLength = 1)]
    public string LastName { get; set; }
    [StringLength(50, MinimumLength = 1, ErrorMessage = "First name cannot be longer than 50 characters.")]
    [Column("FirstName")]
    public string FirstMidName { get; set; }
    public string FullName
    {
        get { return FirstMidName +" "+ LastName; }
    }
    [DataType(DataType.Date)]
    [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
    public DateTime EnrollmentDate { get; set; }
    public int DepartmentID { get; set; }
    [ForeignKey("DepartmentID")]
    public virtual Department Department { get; set; }
    public int DepotID { get; set; }
    [ForeignKey("DepotID")]
    public virtual Depot Depot { get; set; }
    public virtual ICollection<Ticket> Tickets { get; set; }

}

启动Configuration.cs（种子法）

internal sealed class Configuration : DbMigrationsConfiguration<RecreationalServicesTicketingSystem.DAL.IssueContext>
{
    public Configuration()
    {
        AutomaticMigrationsEnabled = false;
    }
    protected override void Seed(RecreationalServicesTicketingSystem.DAL.IssueContext context)
    {

Answer 1

您基本上是在重新创建实体之间的关系/导航。

Depot.cs

public class Depot {
    //....code removed for brevity
    public virtual ICollection<ApplicationUser> Users { get; set; } // fixed
}

部门.cs

public class Department {
    //....code removed for brevity
    public virtual ICollection<ApplicationUser> Users { get; set; } // fixed
}

Ticket.cs

public class Ticket {
    //....code removed for brevity
    public string UserID { get; set; } // fixed
    [ForeignKey("UserID")]
    public virtual ApplicationUser User { get; set; } // fixed
}