Value cannot be null. Parameter name: value, Creat

I created a ViewModel(UserModel) that implement IUser<int> (for customizing 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; }
}

Everything is well, but GenerateUserIdentityAsync method.
The following code is my GenerateUserIdentityAsync in UserModel:

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;
}

An exception has occurred in CreateIdentityAsync method with the following stack trace

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

Could you please guide me where my wrong is ?

回答1:

I faced the same issue while upgrading from ASP.NET Identity 1 to ASP.NET Identity 2 and I solved it by putting a random string in the field SecurityStamp.

I found this solution here.

I hope it works for you too.

回答2:

As Sam mentioned in his comment for the previous answer, my solution to this problem was to make sure that the user I was creating in in the Seed method of the EF Migration had something in the SecurityStamp. Once I did that and did a update-database -force, I was able to log in just fine.

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
                });

If you created your user through some other means, you should be able to fix it by putting a string in the users db column via sql and have the same success.

回答3:

In a similar way to Kevin, we were also experiencing this issue. It turns out that when seeding the database someone had forgotten to set the UserName property which produced this same error.

回答4:

I had a more generic issue - some of my claims had Null values in the AspNetUserClaims table after a sql upgrade routine had run.

I solved the issue by setting the ClaimValues to an empty string.