I am geting this error while I am confirming my mail address :- validation failed for one or more entities. See 'entityvalidationerrors' property for more details.

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ASP.NET

MVC5

when i am confirming my mail address from my mail i am getting this error

Validation failed for one or more entities. See 'EntityValidationErrors' property for more details.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Data.Entity.Validation.DbEntityValidationException: Validation failed for one or more entities. See 'EntityValidationErrors' property for more details.

Source Error: 


Line 130:                {
Line 131:                    user.ConfirmedEmail = true;
Line 132:                    await UserManager.UpdateAsync(user);
Line 133:                    await SignInAsync(user, isPersistent: false);
Line 134:                    return RedirectToAction("Index", "Home", new { ConfirmedEmail = user.Email });

Source File: G:\myebpassproject\ebpassprojects\ebpassprojects\Controllers\AccountController.cs    Line: 132 

here is my controller of regstraion:-

// POST: /Account/Register
       [HttpPost]
       [AllowAnonymous]
       [ValidateAntiForgeryToken]
       public async Task<ActionResult> Register(RegisterViewModel model)
       {
           try
        {
           if (ModelState.IsValid)
           {
               var user = new ApplicationUser { UserName = model.Email, Email = model.Email, FirstName = model.FirstName, MiddleName = model.MiddleName, LastName = model.LastName, Gender = model.Gender, DOB = model.DOB, Profile = model.Profile, Mobile = model.Mobile, Address = model.Address, City = model.City, State = model.State };

               user.ConfirmedEmail = false;
               var result = await UserManager.CreateAsync(user, model.Password);
               using (ApplicationDbContext db = new ApplicationDbContext())

                   if (result.Succeeded)
                   {
                       await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
                       System.Net.Mail.MailMessage m = new System.Net.Mail.MailMessage(
                             new System.Net.Mail.MailAddress("my mail id", "Web Registration"),
                             new System.Net.Mail.MailAddress(user.Email));
                       m.Subject = "Email confirmation";
                       m.Body = string.Format("Dear {0}<BR/>Thank you for your registration, please click on the below link to complete your registration: <a href=\"{1}\" title=\"User Email Confirm\">{1}</a>", user.UserName, Url.Action("ConfirmEmail", "Account", new { Token = user.Id, Email = user.Email }, Request.Url.Scheme));
                       m.IsBodyHtml = true;
                       System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient("smtp-mail.outlook.com");
                       smtp.Credentials = new System.Net.NetworkCredential("my mail id", "my password");
                       smtp.EnableSsl = true;
                       smtp.Port = 587;
                       smtp.Send(m);
                       return RedirectToAction("Confirm", "Account", new { Email = user.Email });

                       // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
                       // Send an email with this link
                       // string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
                       // var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
                       // await UserManager.SendEmailAsync(user.Id, "Confirm your account", "Please confirm your account by clicking <a href=\"" + callbackUrl + "\">here</a>");


                   }
               AddErrors(result);
           }

           // If we got this far, something failed, redisplay form
           return View(model);
       }
           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;
           }

       }

here is my registration table

CREATE TABLE [dbo].[AspNetUsers] (
    [Id]                   NVARCHAR (128)  NOT NULL,
    [Email]                NVARCHAR (256)  NULL,
    [EmailConfirmed]       BIT             NOT NULL,
    [PasswordHash]         NVARCHAR (MAX)  NULL,
    [SecurityStamp]        NVARCHAR (MAX)  NULL,
    [PhoneNumber]          NVARCHAR (MAX)  NULL,
    [PhoneNumberConfirmed] BIT             NOT NULL,
    [TwoFactorEnabled]     BIT             NOT NULL,
    [LockoutEndDateUtc]    DATETIME        NULL,
    [LockoutEnabled]       BIT             NOT NULL,
    [AccessFailedCount]    INT             NOT NULL,
    [UserName]             NVARCHAR (256)  NOT NULL,
    [FirstName]            NVARCHAR (MAX)  NULL,
    [MiddleName]           NVARCHAR (MAX)  DEFAULT ('') NOT NULL,
    [LastName]             NVARCHAR (MAX)  DEFAULT ('') NOT NULL,
    [Gender]               NVARCHAR (MAX)  DEFAULT ('') NOT NULL,
    [DOB]                  NVARCHAR (MAX)  DEFAULT ('') NOT NULL,
    [Profile]              NVARCHAR (MAX)  NULL,
    [Mobile]               DECIMAL (18, 2) DEFAULT ((0)) NOT NULL,
    [Address]              NVARCHAR (MAX)  DEFAULT ('') NOT NULL,
    [City]                 NVARCHAR (MAX)  DEFAULT ('') NOT NULL,
    [State]                NVARCHAR (MAX)  DEFAULT ('') NOT NULL,
    [ConfirmedEmail]       BIT             DEFAULT ((0)) NOT NULL,
    CONSTRAINT [PK_dbo.AspNetUsers] PRIMARY KEY CLUSTERED ([Id] ASC)
);


GO
CREATE UNIQUE NONCLUSTERED INDEX [UserNameIndex]
    ON [dbo].[AspNetUsers]([UserName] ASC);

What I have tried:

i tried through try catch option but i am not getting exectly where i am wrong