更改 ASP.NET 身份中用户的主键

Question

为了实现int主键我按照这篇文章：https://www.asp.net/identity/overview/extensibility/change-primary-key-for-users-in-aspnet-identity

它编译但在启动时它给我这个错误信息：

An exception of type 'System.FormatException' occurred in mscorlib.dll but was not handled in user code
Additional information: Input string was not in a correct format.

代码：

    public void ConfigureAuth(IAppBuilder app)
    {
        // Configure the db context, user manager and signin manager to use a single instance per request
        app.CreatePerOwinContext(ApplicationDbContext.Create);
        app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
        app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

        // Enable the application to use a cookie to store information for the signed in user
        // and to use a cookie to temporarily store information about a user logging in with a third party login provider
        // Configure the sign in cookie
        app.UseCookieAuthentication(new CookieAuthenticationOptions
        {
            AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
            LoginPath = new PathString("/Account/Login"),
            Provider = new CookieAuthenticationProvider
            {
                OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser, int>(
                validateInterval: TimeSpan.FromMinutes(30),
                regenerateIdentityCallback: (manager, user) =>
                    user.GenerateUserIdentityAsync(manager),
================================================================================
                    getUserIdCallback: (id) => (id.GetUserId<int>()  <<===== THIS IS WHERE I GET THE ERROR MESSAGE))
================================================================================

            }
        });            
        app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

        // Enables the application to temporarily store user information when they are verifying the second factor in the two-factor authentication process.
        app.UseTwoFactorSignInCookie(DefaultAuthenticationTypes.TwoFactorCookie, TimeSpan.FromMinutes(5));

        // Enables the application to remember the second login verification factor such as phone or email.
        // Once you check this option, your second step of verification during the login process will be remembered on the device where you logged in from.
        // This is similar to the RememberMe option when you log in.
        app.UseTwoFactorRememberBrowserCookie(DefaultAuthenticationTypes.TwoFactorRememberBrowserCookie);

        // Uncomment the following lines to enable logging in with third party login providers
        //app.UseMicrosoftAccountAuthentication(
        //    clientId: "",
        //    clientSecret: "");

        //app.UseTwitterAuthentication(
        //   consumerKey: "",
        //   consumerSecret: "");

        //app.UseFacebookAuthentication(
        //   appId: "",
        //   appSecret: "");

        //app.UseGoogleAuthentication(new GoogleOAuth2AuthenticationOptions()
        //{
        //    ClientId = "",
        //    ClientSecret = ""
        //});
    }

有谁知道问题出在哪里？

Answer 1

山本哲也说得对。问题是我拿了一个干净的项目，运行它，并在主键是 GUID 的情况下注册为用户。然后我执行了所有需要的更改以使主键变为整数。然后，当我运行时，cookie 被发送到 OnValidateIdentity 并在那里崩溃，因为主键是 GUID。我清理了所有缓存，一切都按预期工作。

更改 ASP.NET 身份中用户的主键

Change Primary Key for Users in ASP.NET Identity

asp.net-mvc

asp.net-identity-3