要調用此方法，「Membership.Provider」屬性必須是「ExtendedMembershipProvider」的實例

Question

當前每當我嘗試使用默認成員身份服務註冊用戶或登錄時，我的主機提供商DiscountASP I上的ASP.Net MVC4收到錯誤

To call this method, the "Membership.Provider" property must be an instance of "ExtendedMembershipProvider".

這不會發生在本地。

這是我InitializeSimpleMembershipAttribute.cs：

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)] 
public sealed class InitializeSimpleMembershipAttribute : ActionFilterAttribute 
{ 
    private static SimpleMembershipInitializer _initializer; 
    private static object _initializerLock = new object(); 
    private static bool _isInitialized; 

    public override void OnActionExecuting(ActionExecutingContext filterContext) 
    { 
     // Ensure ASP.NET Simple Membership is initialized only once per app start 
     LazyInitializer.EnsureInitialized(ref _initializer, ref _isInitialized, ref _initializerLock); 
    } 

    private abstract class SimpleMembershipInitializer 
    { 
     protected SimpleMembershipInitializer() 
     { 
      Database.SetInitializer<UsersContext>(null); 

      try 
      { 
       using (var context = new UsersContext()) 
       { 
        if (!context.Database.Exists()) 
        { 
         // Create the SimpleMembership database without Entity Framework migration schema 
         ((IObjectContextAdapter)context).ObjectContext.CreateDatabase(); 
        } 
       } 

       WebSecurity.InitializeDatabaseConnection("DefaultConnection", "UserProfile", "UserId", "UserName", autoCreateTables: true); 
      } 
      catch (Exception ex) 
      { 
       throw new InvalidOperationException("The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588", ex); 
      } 
     } 
    } 
} 

以下是錯誤的全屏截圖：

有誰知道我怎麼能解決這個問題或知道解決它的文章？

Answer 1

嘗試<system.web>節點中設置以下在你web.config：

<roleManager enabled="true" defaultProvider="SimpleRoleProvider"> 
     <providers> 
      <clear /> 
      <add name="SimpleRoleProvider" type="WebMatrix.WebData.SimpleRoleProvider, WebMatrix.WebData" /> 
     </providers> 
    </roleManager> 
    <membership defaultProvider="SimpleMembershipProvider"> 
     <providers> 
      <clear /> 
      <add name="SimpleMembershipProvider" type="WebMatrix.WebData.SimpleMembershipProvider, WebMatrix.WebData" /> 
     </providers> 
    </membership> 
    <sessionState mode="InProc" customProvider="DefaultSessionProvider"> 
     <providers> 
      <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" /> 
     </providers> 
    </sessionState> 

聽起來就像當你去使用它無法識別SimpleMembership。

而且，它可能是值得包括，在WebMatrix.webData庫可以通過的NuGet安裝：

PM> Install-Package Microsoft.AspNet.WebPages.WebData 

Answer 2

我有同樣的錯誤，但對我來說是100％的引用。我無法讓WebMatrix.WebSecurity多次工作......每次都是因爲我沒有使用MVC 4 Internet模板創建項目。

關鍵是引用和配置默認在模板中工作，所以只需重新創建您的項目，它會沒事的。

我的修復程序是： 1.將我的項目備份到另一個文件夾。 2.檢出所有文件 3.以完全相同的名稱創建一個新的MVC 4 Internet項目。 4.複製+粘貼（覆蓋）原始項目。 5.添加任何缺少的引用，更改的路由，.config設置/數據庫連接。

Answer 3

以上步驟，但沒有幫助。是什麼幫助被改變的web.config：

 <dependentAssembly> 
    <assemblyIdentity name="WebMatrix.Data" publicKeyToken="31bf3856ad364e35" culture="neutral" /> 
    <bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.0.0.0" /> 
    </dependentAssembly> 
      <dependentAssembly> 
    <assemblyIdentity name="WebMatrix.WebData" publicKeyToken="31bf3856ad364e35" culture="neutral" /> 
    <bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.0.0.0" /> 
    </dependentAssembly> 

Answer 4

試圖改變AccountController.cs

下的登錄功能

 // 
    // POST: /Account/Login 

    [AllowAnonymous] 
    [HttpPost] 
    public ActionResult Login(LoginModel model, string returnUrl) 
    { 
     if (ModelState.IsValid) 
     { 
      if (Membership.ValidateUser(model.UserName, model.Password)) 
      { 
       FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe); 
       if (Url.IsLocalUrl(returnUrl)) 
       { 
        return Redirect(returnUrl); 
       } 
       else 
       { 
        return RedirectToAction("Index", "Home"); 
       } 
      } 
      else 
      { 
       ModelState.AddModelError("", "The user name or password provided is incorrect."); 
      } 
     } 

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