找不到或無法加載已注冊的 .Net Framework Data Provider。 說明: 執(zhí)行當前 Web 請求期間，出現(xiàn)未經(jīng)處理的異常。請檢查堆棧跟蹤信息，以了解有關(guān)該錯誤以及代碼中導致錯誤的出處的詳細信息。 異常詳細信息: System.Configuration.ConfigurationErrorsException: 找不到或無法加載已注冊的 .Net Framework Data Provider。源文件: c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\308e6a20\d44281c8\App_Web_index.aspx.cdcab7d2.ebi6tv3u.0.cs 行: 0 堆棧跟蹤: [ConfigurationErrorsException: 找不到或無法加載已注冊的 .Net Framework Data Provider。] System.Data.Common.DbProviderFactories.GetFactory(DataRow providerRow) +2224666 System.Data.EntityClient.EntityConnection.GetFactory(String providerString) +143 System.Data.EntityClient.EntityConnection.ChangeConnectionString(String newConnectionString) +641 System.Data.Objects.ObjectContext.CreateEntityConnection(String connectionString) +67 Model.Entities..ctor() +40 index..ctor() +32 ASP.index_aspx..ctor() in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\308e6a20\d44281c8\App_Web_index.aspx.cdcab7d2.ebi6tv3u.0.cs:0 __ASP.FastObjectFactory_app_web_index_aspx_cdcab7d2_ebi6tv3u.Create_ASP_index_aspx() in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\308e6a20\d44281c8\App_Web_index.aspx.cdcab7d2.ebi6tv3u.1.cs:0 System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp) +174 System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +42 System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +549 System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +193 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +375