“Membership.Provider必须是ExtendedMembershipProvider的实例”

我正在使用Microsoft Visual Studio express 2012 for web编写MVC4网站。每当我在Package Manager控制台运行“更新-数据库”，将出现以下异常：“Membership.Provider必须是ExtendedMembershipProvider的实例”

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

这是我的种方法：

protected override void Seed(GNSystem.Models.DataContext context) 
    { 
     context.Forums.AddOrUpdate(
         new Forum { ForumName = "Hello" }, 
         new Forum { ForumName = "World" }, 
         new Forum { ForumName = "!" } 
         ); 
     context.UserProfiles.Add(new UserAccount { UserName = "Gilad", EMail = "[email protected]" }); 
     WebSecurity.CreateUserAndAccount("Gilad", "123456"); 
     WebSecurity.Login("Gilad", "123456"); 
     context.Threads.AddOrUpdate(
      new Thread { Subject = "FirstThread", Content = "Awesome Content", ForumID = 1, UserID = 1 }, 
      new Thread { Subject = "SecondThread", Content = "Awesome Content", ForumID = 1, UserID = 1 } 
      ); 
    }

我搜索solutions并添加下面的指令Web.config文件：

<add key="enableSimpleMembership" value="true" />

但仍引发异常。

这是什么原因？ 编辑1：

<?xml version="1.0" encoding="utf-8"?> 
<!-- 
    For more information on how to configure your ASP.NET application, please visit 
    http://go.microsoft.com/fwlink/?LinkId=169433 
    --> 
<configuration> 
    <configSections> 
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --> 
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /> 
    </configSections> 
    <connectionStrings> 
    <add name="DefaultConnection" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-GNSystem-20120913165926;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnet-GNSystem-20120913165926.mdf" providerName="System.Data.SqlClient" /> 
    </connectionStrings> 
    <appSettings> 
    <add key="enableSimpleMembership" value="true" /> 
    <add key="webpages:Version" value="2.0.0.0" /> 
    <add key="webpages:Enabled" value="false" /> 
    <add key="PreserveLoginUrl" value="true" /> 
    <add key="ClientValidationEnabled" value="true" /> 
    <add key="UnobtrusiveJavaScriptEnabled" value="true" /> 
    </appSettings> 
    <system.web> 
    <compilation debug="true" targetFramework="4.5" /> 
    <httpRuntime targetFramework="4.5" /> 
    <authentication mode="Forms"> 
     <forms loginUrl="~/Account/Login" timeout="2880" /> 
    </authentication> 
    <pages> 
     <namespaces> 
     <add namespace="System.Web.Helpers" /> 
     <add namespace="System.Web.Mvc" /> 
     <add namespace="System.Web.Mvc.Ajax" /> 
     <add namespace="System.Web.Mvc.Html" /> 
     <add namespace="System.Web.Optimization" /> 
     <add namespace="System.Web.Routing" /> 
     <add namespace="System.Web.WebPages" /> 
     </namespaces> 
    </pages> 
    </system.web> 
    <system.webServer> 
    <validation validateIntegratedModeConfiguration="false" /> 
    <handlers> 
     <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" /> 
     <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" /> 
     <remove name="ExtensionlessUrlHandler-Integrated-4.0" /> 
     <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" /> 
     <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" /> 
     <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" /> 
    </handlers> 
    </system.webServer> 
    <runtime> 
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" /> 
     <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" /> 
     <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" /> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" /> 
     <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> 
     </dependentAssembly> 
    </assemblyBinding> 
    </runtime> 
    <entityFramework> 
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" /> 
    </entityFramework> 
</configuration>

来源

2012-09-13 Gilad Naaman

您是否有自定义会员供应商？ –

不是我所知道的。 –

你的web.config中有会员资格部分吗？用这个更新你的问题。 –

之前，你可以使用WebSecurity.CreateUserAndAccount("Gilad", "123456"); SimpleMembership必须初始化。这通常是在AccountController上使用[InitializeSimpleMembership]属性完成的，但由于您试图在您的种子中调用这些方法，因此您需要以其他方式对其进行初始化。

来源

2012-09-13 15:39:25

非常感谢你:) –

protected override void Seed(eManager.Web.Infrastructure.DepartmentDb context) 
{ 
    context.Departments.AddOrUpdate(d => d.Name, 
       new Department() { Name = "Engineering" }, 
       new Department() { Name = "Sales" }, 
       new Department() { Name = "Shipping" }, 
       new Department() { Name = "Human Resources" }); 

    if (!Roles.RoleExists("Admin")) 
    { 
    Roles.CreateRole("Admin"); 
    } 

    if (Membership.GetUser("wayne") == null) 
    { 
    Membership.CreateUser("wayne", "[email protected]"); 
    Roles.AddUserToRole("wayne", "Admin"); 
    }

来源

2012-10-10 02:53:30 Wayne

请检查您在此应用程序中使用的成员资格提供程序是否继承自MembershipProvider或ExtendedMembershipProvider。确保它是从ExtendedMembershipProvider类继承的。

来源

2013-02-25 09:14:04

“Membership.Provider必须是ExtendedMembershipProvider的实例”

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