在 MVC 5 Membership 中更改密碼長度

嘗試將預設最小密碼長度更改為 4 個字元。我知道，4！！！可笑，對吧！不是我的電話。

無論如何，我已經改變了它，RegisterViewModel但實際上並沒有改變它。為了說明我已經發布了下面的程式碼。根據ModleState.IsValid更新的 ViewModel 正確返回。但是，它隨後呼叫UserManager.CreateAsync()返回False錯誤消息“密碼必須至少為 6 個字元”

我已經按照這個非常相似的文章（更改密碼…）中的步驟進行操作，但據我所知，它不適用於 MVC 5。它仍然返回相同的消息。

//
   // POST: /Account/Register
   [HttpPost]
   [AllowAnonymous]
   [ValidateAntiForgeryToken]
   public async Task<ActionResult> Register(RegisterViewModel model)
   {
       if (ModelState.IsValid)
       {
           var user = new ApplicationUser() { UserName = model.UserName, LastLogin = model.LastLogin };


// This is where it 'fails' on the CreateAsync() call
                   var result = await UserManager.CreateAsync(user, model.Password);
                   if (result.Succeeded)
                   {
                       await SignInAsync(user, isPersistent: false);
                       return RedirectToAction("Index", "Home");
                   }
                   else
                   {
                       AddErrors(result);
                   }
               }
           // If we got this far, something failed, redisplay form
           return View(model);
       }

如您所見，密碼驗證的UserManager公共屬性IIdentityValidator<string> PasswordValidator目前在UserManager建構子中使用硬編碼參數進行初始化this.PasswordValidator = (IIdentityValidator<string>) new MinimumLengthValidator(6);。

您可以使用MinimumLengthValidator具有所需密碼長度的對象設置此屬性。

您可以使用 App_Start 目錄的 IdentityConfig.cs 文件中的 PasswordValidator 設置密碼屬性。

public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options, IOwinContext context) 
   {
       var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(context.Get<ApplicationDbContext>()));
       // Configure validation logic for usernames
       manager.UserValidator = new UserValidator<ApplicationUser>(manager)
       {
           AllowOnlyAlphanumericUserNames = false,
           RequireUniqueEmail = true
       };

       // Configure validation logic for passwords
       manager.PasswordValidator = new PasswordValidator
       {
           RequiredLength = 6,
           RequireNonLetterOrDigit = false,
           RequireDigit = true,
           RequireLowercase = true,
           RequireUppercase = true,
       };

       // Configure user lockout defaults
       manager.UserLockoutEnabledByDefault = true;
       manager.DefaultAccountLockoutTimeSpan = TimeSpan.FromMinutes(5);
       manager.MaxFailedAccessAttemptsBeforeLockout = 5;

       // Register two factor authentication providers. This application uses Phone and Emails as a step of receiving a code for verifying the user
       // You can write your own provider and plug it in here.
       manager.RegisterTwoFactorProvider("Phone Code", new PhoneNumberTokenProvider<ApplicationUser>
       {
           MessageFormat = "Your security code is {0}"
       });
       manager.RegisterTwoFactorProvider("Email Code", new EmailTokenProvider<ApplicationUser>
       {
           Subject = "Security Code",
           BodyFormat = "Your security code is {0}"
       });
       manager.EmailService = new EmailService();
       manager.SmsService = new SmsService();
       var dataProtectionProvider = options.DataProtectionProvider;
       if (dataProtectionProvider != null)
       {
           manager.UserTokenProvider = 
               new DataProtectorTokenProvider<ApplicationUser>(dataProtectionProvider.Create("ASP.NET Identity"));
       }
       return manager;
   }

引用自：https://stackoverflow.com/questions/19731267