如何在 ASP .NET MVC 5 中为 AspNetUser 创建 SecurityStamp

当我在应用程序运行时通过注册操作创建用户时，应用程序用户将获得安全标记。当我通过以下方式添加用户时：

if (!context.Users.Any()) {
                System.Diagnostics.Debug.WriteLine("INSIDE");
                var hasher = new PasswordHasher();
                try {
                    var users = new List<ApplicationUser> { 
                        new ApplicationUser{PasswordHash = hasher.HashPassword("TestPass44!"), Email = "[email protected] /cdn-cgi/l/email-protection", UserName = "[email protected] /cdn-cgi/l/email-protection"},
                        new ApplicationUser{PasswordHash = hasher.HashPassword("TestPass44!"), Email = "[email protected] /cdn-cgi/l/email-protection", UserName = "[email protected] /cdn-cgi/l/email-protection"}
                        };

                    users.ForEach(user => context.Users.AddOrUpdate(user));

                    context.SaveChanges();
                } catch (DbEntityValidationException e) {
                    System.Diagnostics.Debug.WriteLine("EXC: ");
                    foreach (DbEntityValidationResult result in e.EntityValidationErrors) {
                        foreach (DbValidationError error in result.ValidationErrors) {
                            System.Diagnostics.Debug.WriteLine(error.ErrorMessage);
                        }
                    }

                }
            }

用户没有获得安全标记：

然后当我想登录时我得到：

问题：如何生成SecurityStamp对于用户？

安全印章可以是您想要的任何内容。它经常被误认为是时间戳，但事实并非如此。如果用户实体发生更改，它将被 ASP.NET Identity 覆盖。如果您直接处理上下文，最好的方法是生成一个新的 Guid 并将其用作标记。这是一个简单的例子：

var users = new List<ApplicationUser> 
                { 
                    new ApplicationUser
                        {
                            PasswordHash = hasher.HashPassword("TestPass44!"), 
                            Email = "[email protected] /cdn-cgi/l/email-protection", 
                            UserName = "[email protected] /cdn-cgi/l/email-protection", 
                            SecurityStamp = Guid.NewGuid().ToString()
                        },
                    new ApplicationUser
                        {
                            PasswordHash = hasher.HashPassword("TestPass44!"),
                            Email = "[email protected] /cdn-cgi/l/email-protection", 
                            UserName = "[email protected] /cdn-cgi/l/email-protection", 
                            SecurityStamp = Guid.NewGuid().ToString()
                         }
                };