如何檢查以確保新密碼與C＃的設定長度？

Question

我正在使用密碼重置功能，並嘗試檢查以確保新密碼至少有7個字符。它會運行並將新密碼傳遞給控制器​​並將其設置爲用戶的密碼，但它只是使用輸入的內容而不是檢查來確保它符合密碼要求。感謝您的任何建議:)

這裏的模型：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.Mvc; 
using System.ComponentModel.DataAnnotations; 

namespace [CompanyName].Models 
{ 
    public class ResetPasswordModel 
    { 
     [Required] 
     [ValidatePasswordLength(7, ErrorMessage = "New passwords must be a minimum of 7 characters, please try a different password.")] 
     [DataType(DataType.Password)] 
     [Display(Name = "New password")] 
     public string NewPassword { get; set; } 

     [DataType(DataType.Password)] 
     [Display(Name = "Confirm new password")] 
     [Compare("NewPassword", ErrorMessage = "The new password and confirmation password do not match.")] 
     public string ConfirmPassword { get; set; } 
    } 
} 

而這裏的頁面重置密碼：

@model [CompanyName].Models.ResetPasswordModel 
@{ 
    ViewBag.Title = "ResetPassword"; 
} 

@if (Model == null) 
{ 
    <p> 
     We could not find your user account in the database. 
    </p> 
} 
else 
{ 

    <script type="text/javascript" src="../../Scripts/jquery.infieldlabel.min.js" ></script> 
    <script type="text/javascript"> 
     $(document).ready(function() { 
      $("label").inFieldLabels(); 
     }); 
    </script> 
    <h2> 
     Reset Password</h2> 
    <p> 
    Please enter your new password below. 
    </p> 
    <p> 
     Note: New passwords are required to be a minimum of 7 characters in length. 
    </p> 

    <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script> 
    <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script> 

    using (Html.BeginForm()) 
    { 
    <div style="position: relative;"> 
     <fieldset> 
      <legend>Reset Password</legend> 
     <label for="NewPassword" style="position:absolute; top: 24px; left: 16px;">New Password</label> 



      <div class="editor-field"> 
       @Html.PasswordFor(m => m.NewPassword) 
       @Html.ValidationMessageFor(m => m.NewPassword) 
      </div> 
      <br /> 
     <label for="ConfirmPassword" style="position:absolute; top: 64px; left: 16px;">Confirm New Password</label>  


      <div class="editor-field"> 
       @Html.PasswordFor(m => m.ConfirmPassword) 
       @Html.ValidationMessageFor(m => m.ConfirmPassword) 
      </div> 
      <p> 
       <input type="submit" value="reset Password" /> 
      </p> 

     </fieldset> 

    </div> 
    } 
} 

更新型號代碼：

[Required] 
     [DataType(DataType.Password)] 
     [Display(Name = "New password")] 
     [StringLength(50, MinimumLength = 7, ErrorMessage="New passwords must be a minimum of 7 characters, please try a different password.")] 
     public string NewPassword { get; set; } 

     [DataType(DataType.Password)] 
     [Display(Name = "Confirm new password")] 
     [Compare("NewPassword", ErrorMessage = "The new password and confirmation password do not match.")] 
     public string ConfirmPassword { get; set; } 

控制器代碼：

public ActionResult ResetPassword(Guid secureID) 
     { 
      int id = secureID.FromSecureID(); 
      var model = new ResetPasswordModel(); 

      return View(model); 
     } 

     [HttpPost] 
     public ActionResult ResetPassword(Guid secureID, ResetPasswordModel model) 
     { 

      if (ModelState.IsValid) 
      { 
       int id = secureID.FromSecureID(); 
       var user = Database.Users.FirstOrDefault(u => u.ID == id); 
       if (user == null) 
       { 
        ModelState.AddModelError("ID", "Sorry! We could not find your user name in the database, please try again."); 
        return View(model); 
       } 
       //else (model.NewPassword == null) { 
       //return View(); 
       //} 
       user.PasswordHash = model.NewPassword.ToSha1Hash(); 
       Database.SubmitChanges(); 

      } 
      return RedirectToAction("ChangePasswordSuccess"); 
     } 

更新控制器代碼：

[HttpPost] 
     public ActionResult ResetPassword(Guid secureID, ResetPasswordModel model) 
     { 

      if(ModelState.IsValid) 
       { 
       int id = secureID.FromSecureID(); 
       var user = Database.Users.FirstOrDefault(u => u.ID == id); 
       if (user == null) 
       { 
        ModelState.AddModelError("ID", "Sorry! We could not find your user name in the database, please try again."); 
        return View(model); 
       } 
       //else (model.NewPassword == null) { 
       //return View(); 
       //} 
       user.PasswordHash = model.NewPassword.ToSha1Hash(); 
       Database.SubmitChanges(); 
       return RedirectToAction("ChangePasswordSuccess"); 
      } 

      return View(model); 
     } 

更新型號代碼：

namespace [CompanyName].Models 
{ 
    public class ResetPasswordModel 
    { 
     [Required] 
     [DataType(DataType.Password)] 
     [Display(Name = "New Password")] 
     [StringLength(100, ErrorMessage = "The new must be at least 7 characters long.", MinimumLength = 7)] 
     public string Password { set; get; } 

     [Required] 
     [DataType(DataType.Password)] 
     [Compare("Password")] 
     [Display(Name = "Confirm New Password")] 
     public string ConfirmPassword { set; get; } 
    } 
} 

Answer 1

這個屬性在你的視圖模型將照顧它。

[Required] 
    [DataType(DataType.Password)] 
    [Display(Name = "New Password")] 
    [StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 7)] 
    public string NewPassword{ set; get; } 

    [Required] 
    [DataType(DataType.Password)] 
    [Compare("Password")] 
    [Display(Name = "Confirm New Password")] 
    public string ConfirmPassword { set; get; } 

，並在你的控制器動作，你可以檢查ModelState.IsValid屬性，看是否驗證失敗或不

[HttpPost] 
public ActionResult ResetPassword(Guid secureID, ResetPasswordModel model) 
{ 
    if(ModelState.IsValid) 
    { 
     // Validation correct, Lets save the new password and redirect to another action 
    } 
    return View(model); 
} 

Answer 2

我不知道什麼是ValidatePasswordLength，但System.ComponentModel.DataAnnotations.StringLengthAttribute應該足夠了，並且通過MVC粘合劑和驗證處理方式（也也在jQuery.validate方面）。

[StringLength(50, MinimumLength = 7)] 
public string NewPassword { get; set; } 

然後在你的控制器，你可以有一個這樣的動作：

public ActionResult ResetPassword(ResetPasswordViewModel model) 
{ 
    if (ModelState.IsValid) 
    { 
     //do something with the valid model and return 
    } 

    return View(model); 
}