Question

我创建了一个实现UserModel的ViewModel（IUser<int>）（用于自定义ASP.NET Identity 2.0）

public class UserModel : IUser<int>
{
    public int Id { get; set; }

    public string SecurityStamp { get; set; }

    [Display(Name = "Name")]
    public string FirstName { get; set; }

    [Display(Name = "Last Name")]
    public string LastName { get; set; }

    public string FullName { get; set; }

    [Display(Name = "Username")]
    public string UserName { get; set; }

    [DataType(DataType.Password)]
    [Display(Name = "Password")]
    public string Password { get; set; }

    [Display(Name = "E-Mail")]
    public string Email { get; set; }

    [Display(Name = "Photo")]
    public string PhotoPath { get; set; }

    public List<Claim> Claims { get; set; }

    [IgnoreMapping]
    public List<CommentModel> Comments { get; set; }
}

一切顺利，但是GenerateUserIdentityAsync方法以下代码是UserModel中的GenerateUserIdentityAsync：

public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<UserModel, int> manager)
{
    this.SecurityStamp = Guid.NewGuid().ToString();
    this.Claims = new List<Claim>();

    ClaimsIdentity userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);//Exception : Value cannot be null. Parameter name: value

    return userIdentity;
}

使用以下堆栈跟踪的CreateIdentityAsync方法发生异常

ArgumentNullException: Value cannot be null.
Parameter name: value]
   System.Security.Claims.Claim..ctor(String type, String value, String valueType, String issuer, String originalIssuer, ClaimsIdentity subject, String propertyKey, String propertyValue) +10798181
   System.Security.Claims.Claim..ctor(String type, String value) +34
   Microsoft.AspNet.Identity.<CreateAsync>d__0.MoveNext() +1458
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +24
   Smartiz.UI.Models.<GenerateUserIdentityAsync>d__2.MoveNext() in e:\Works\Smartiz\Smartiz.UI\Models\UserModels.cs:215
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +24
   Smartiz.UI.Controllers.<SignInAsync>d__58.MoveNext() in e:\Works\Smartiz\Smartiz.UI\Controllers\AccountController.cs:448
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
   System.Runtime.CompilerServices.TaskAwaiter.GetResult() +21
   Smartiz.UI.Controllers.<ExternalLoginCallback>d__3c.MoveNext() in e:\Works\Smartiz\Smartiz.UI\Controllers\AccountController.cs:315
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
   System.Runtime.CompilerServices.TaskAwaiter.GetResult() +21
   System.Threading.Tasks.TaskHelpersExtensions.ThrowIfFaulted(Task task) +61
   System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) +114
   System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeAsynchronousActionMethod>b__36(IAsyncResult asyncResult) +66
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +47
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +136
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +49
   System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +117
   System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +323
   System.Web.Mvc.Async.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult) +44
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +47
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +136
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +50
   System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +72
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +185
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +133
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +40
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +34
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +70
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +139
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +44
   System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +39
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +62
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +139
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +39
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +39
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +70
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +139
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +40
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9651188
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

你能指导一下我的错误吗？

Answer 1

从ASP.NET Identity 1升级到ASP.NET Identity 2时遇到了同样的问题，我通过在SecurityStamp字段中放置一个随机字符串来解决它。

我找到了这个解决方案here。

我希望它也适合你。

Answer 2

正如Sam在上一个回答的评论中提到的，我对这个问题的解决方案是确保我在EF Migration的Seed方法中创建的用户在SecurityStamp中有一些东西。一旦我这样做并做了update-database -force，我就可以登录了。

context.Users.AddOrUpdate(u => u.UserName,
                new ApplicationUser
                {
                    UserName = "demo",
                    Email = "demo@demo.com",
                    EmailConfirmed = true,
                    PhoneNumberConfirmed = true,
                    PasswordHash = password,
                    PhoneNumber = "111-222-3344",
                    SecurityStamp = Guid.NewGuid().ToString() //THIS IS WHAT I NEEDED
                });

如果您通过其他方式创建了用户，则应该能够通过sql在users db列中添加一个字符串来修复它，并取得相同的成功。

Answer 3

与Kevin类似，我们也遇到了这个问题。事实证明，当播种数据库时，有人忘记设置产生同样错误的UserName属性。

Answer 4

我有一个更通用的问题 - 在运行sql升级例程后，我的一些声明在AspNetUserClaims表中有Null值。

我通过将ClaimValues设置为空字符串来解决问题。

Answer 5

对我来说，它是覆盖UserName字段，以便使用我自己的Display属性。我在ApplicationUser类中使用了以下内容：

[Display(Name = "Whatever")]
public new string UserName { get; set; }

删除此选项后，登录将按预期工作。我也覆盖了Email和PhoneNumber，但是UserName导致了问题。

Answer 6

这个问题使我在办公室呆了几个小时。

这是导致问题的行：

result = signinManager.PasswordSignIn(txtthecrmusername.Text, txtthecrmpassword.Text, RememberMe.Checked, shouldLockout:=False)

最后，我向AspNetUsers添加了一个自定义字段，并将其保留为空。匆忙中，我也忘记了在创建用户时将其设置为空。

自定义用户声明不能为空，但标准声明可以为空。

Answer 7

我坚持SignInManager无法以相同的错误登录新创建的用户。

解决方案：

我发现，仅在创建角色时向用户提供角色即可解决问题。希望它可以帮助其他人。

await userManager.AddToRoleAsync(user, UserRoles.Basic.ToString());

Answer 8

对于其他在搜索“值不能为空。参数名称：值”的原因之后来到这里而没有“ CreateIdentityAsync”错误的问题，该问题可能是DataAnnotations中的空值，例如：[Display(Name = "")]

Answer 9

这个错误的原因是由于验证属性中的空值

[Display(Name = " ")]

值不能为空。参数名称：value，CreateIdentityAsync？

9 个答案: