MVC5 Identity UserManager.Update(user) 不工作

Question

这是我第一次在 MVC5 中使用代码优先进行用户管理。我可以更改密码，但无法更新用户注册。我已经梳理了互联网，并逐字查看了该网站上与 UserManager.Update(user) not working 相关的每个问题。

using System.Data.Entity;
using System.Security.Claims;
using System.Threading.Tasks;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.EntityFramework;

namespace _100..Models
{

    public class ApplicationUser : IdentityUser
    {
        public virtual PersonalInfo PersonalInfo { get; set; }
        public virtual BillingInfo BillingInfo { get; set; }
        public virtual DeliveryInfo DeliveryInfo { get; set; }
        public Chapters Chapter { get; set; }
        public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<ApplicationUser> manager)
        {
            // Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
            var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
            // Add custom user claims here
            return userIdentity;
        }
    }

    public class PersonalInfo
    {
        public int ID { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
    }

    public class BillingInfo
    {
        public int ID { get; set; }
        public string AddressLine1 { get; set; }
        public string AddressLine2 { get; set; }
        public string City { get; set; }
        public string State { get; set; }
        public string Zip { get; set; }
    }

    public class DeliveryInfo
    {
        public int ID { get; set; }
        public string AddressLine1 { get; set; }
        public string AddressLine2 { get; set; }
        public string City { get; set; }
        public string State { get; set; }
        public string Zip { get; set; }
    }


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

        public DbSet<PersonalInfo> PersonalInfo { get; set; }
        public DbSet<BillingInfo> BillingInfo { get; set; }
        public DbSet<DeliveryInfo> DeliveryInfo { get; set; }

        public static ApplicationDbContext Create()
        {
            return new ApplicationDbContext();
        }
    }
}

这是我的行动

[HttpPost]
        public async Task<ActionResult> UpdateRegisteration(ApplicationUser user)
        {
            var result = await UserManager.UpdateAsync(user);
            return RedirectToAction("Index", "Home");
        }

我已经确认用户对象在执行操作时具有更新的数据，并且更新方法返回成功，但它实际上并没有更新数据库。

Answer 1

这个修复有几个层次。首先，当我执行 UserManager.Update 时，它​​针对的是我从 updateRegistration 视图收到的用户对象。 EF 认为它是一个新对象并引发内部错误“用户名已存在”并且失败但报告成功。所以我不得不创建一个 dbContext 并将实体状态更新为已修改。但我了解到，我还必须从更新的用户 ID 创建一个用户对象来设置用户名，否则更新失败。我发现我必须更新 PasswordHash 否则它将为空。然后我发现我还必须更新 SecurityStamp 否则登录过程会引发错误。我的操作如下。

 [HttpPost]
public async Task<ActionResult> UpdateRegisteration(ApplicationUser UpdatedUser)
{
    var SavedUser = await UserManager.FindByIdAsync(UpdatedUser.Id);

    try
    {
        UpdatedUser.SecurityStamp = SavedUser.SecurityStamp;
        UpdatedUser.PasswordHash = SavedUser.PasswordHash;
        UpdatedUser.UserName = SavedUser.UserName;
        UpdatedUser.Id = SavedUser.Id;
        UpdatedUser.PersonalInfo.ID = SavedUser.PersonalInfo.ID;
        UpdatedUser.BillingInfo.ID = SavedUser.BillingInfo.ID;
        UpdatedUser.DeliveryInfo.ID = SavedUser.DeliveryInfo.ID;

        ApplicationDbContext db = new ApplicationDbContext();
        db.Entry(UpdatedUser).State = EntityState.Modified;
        db.Entry(UpdatedUser.PersonalInfo).State = EntityState.Modified;
        db.Entry(UpdatedUser.BillingInfo).State = EntityState.Modified;
        db.Entry(UpdatedUser.DeliveryInfo).State = EntityState.Modified;
        await db.SaveChangesAsync();

        //            var result = await UserManager.UpdateAsync(SavedUser);
        return RedirectToAction("Index", "Home");
    }
    catch (System.Data.Entity.Validation.DbEntityValidationException dbEx)
    {
        Exception raise = dbEx;
        foreach (var validationErrors in dbEx.EntityValidationErrors)
        {
            foreach (var validationError in validationErrors.ValidationErrors)
            {
                string message = string.Format("{0}:{1}",
                    validationErrors.Entry.Entity.ToString(),
                    validationError.ErrorMessage);
                // raise a new exception nesting
                // the current instance as InnerException
                raise = new InvalidOperationException(message, raise);
            }
        }
        throw raise;
    }
}