將用戶添加到註冊表失敗的角色ASP.NET MVC3

Question

我喜歡讓用戶在asp.net mvc web應用程序中註冊時選擇他們的角色。我有以前通過asp.net addministration工具添加角色。這裏是我使用的代碼註冊方法

public ActionResult Register() 
{ 
ViewData["roleName"] = new SelectList(Roles.GetAllRoles(), "roleName"); 
return View(); 
} 


[HttpPost] 
    public ActionResult Register(RegisterModel model) 
    { 
     if (ModelState.IsValid) 
     { 
      // Attempt to register the user 
      MembershipCreateStatus createStatus; 
      Membership.CreateUser(model.UserName, model.Password, model.Email, null, null, true, null, out createStatus); 

      if (createStatus == MembershipCreateStatus.Success) 
      { 
       Roles.AddUserToRole(model.UserName, "roleName"); 
       FormsAuthentication.SetAuthCookie(model.UserName, false /* createPersistentCookie */); 
       return RedirectToAction("Index", "Home"); 
      } 
      else 
      { 
       ModelState.AddModelError("", ErrorCodeToString(createStatus)); 
      } 
     } 

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

雖然註冊查看我得到這個代碼

<label for="roleName">Select Role:</label> 
     @Html.DropDownList("roleName") 
     @Html.ValidationMessage("roleName") 

角色都寫在數據庫和用戶雖然。然而UsersInRoles表是空的，我得到這個異常

System.Configuration.Provider.ProviderException：找不到角色'roleName'。

有沒有人有同樣的問題？

Answer 1

您應該添加ROLENAME參數來註冊，獲得用戶ROLENAME選擇控制器的動作，或從的FormCollection檢索角色名，我這裏是 更改註冊後的行動：

 [HttpPost] 
     public ActionResult Register(RegisterModel model, String roleName) 
     { 
      if (ModelState.IsValid) 
      { 
       // Attempt to register the user 
       MembershipCreateStatus createStatus; 
       Membership.CreateUser(model.UserName, model.Password, model.Email, null, null, true, null, out createStatus); 

       if (createStatus == MembershipCreateStatus.Success) 
       { 
        Roles.AddUserToRole(model.UserName, roleName); 
        FormsAuthentication.SetAuthCookie(model.UserName, false /* createPersistentCookie */); 
        return RedirectToAction("Index", "Home"); 
       } 
       else 
       { 
        ModelState.AddModelError("", ErrorCodeToString(createStatus)); 
       } 
      } 

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