我正在尝试使用 C#、Entity Framework 4.0 代码优先和 SQL Server CE 以及自动脚手架创建一个 ASP.NET MVC 3 应用程序。在我尝试实际使用连接到 SQL Server CE 数据库的页面之前，一切正常。
我在 web.config 中的连接是这样的
<add name="BRX" connectionString="Data Source=|DataDirectory|BRX.sdf" providerName="System.Data.SqlServerCe.4.0"/>
我的模型类看起来像这样
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;
namespace BizRadioXInternal.Models
{
public class KeyWordEmail
{
[Key]
public int KeywordEmailID { get; set; }
public string Name { get; set; }
public string Keyword { get; set; }
public string Link { get; set; }
public string EmailAddress { get; set; }
}
}
我的数据上下文类看起来像这样
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
using BizRadioXInternal.Models;
namespace BizRadioXInternal.Models
{
public class BRX : DbContext
{
public virtual DbSet<KeyWordEmail> KeyWordEmails { get; set; }
}
}
每次我尝试访问涉及数据库的页面（如标准索引页面）时，我都会收到以下错误
给定的程序集名称或代码库无效。（来自 HRESULT 的异常：0x80131047）
这是堆栈跟踪
[FileLoadException: The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)]
System.Reflection.AssemblyName.nInit(RuntimeAssembly& assembly, Boolean forIntrospection, Boolean raiseResolveEvent) +0
System.Reflection.AssemblyName..ctor(String assemblyName) +80
System.Data.Entity.ModelConfiguration.Utilities.DbConnectionExtensions.GetProviderInvariantName(DbConnection connection) +312
System.Data.Entity.ModelConfiguration.Utilities.DbConnectionExtensions.GetProviderInfo(DbConnection connection, DbProviderManifest& providerManifest) +63
System.Data.Entity.DbModelBuilder.Build(DbConnection providerConnection) +157
System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext) +62
System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input) +117
System.Data.Entity.Internal.LazyInternalContext.InitializeContext() +407
System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) +18
System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() +62
System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator() +15
System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator() +40
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +315
System.Linq.Enumerable.ToList(IEnumerable`1 source) +58
BizRadioXInternal.Controllers.KeyWordEmailController.Index() in D:\Creative Plumbing\BusinessRadioX\BizRadioXInternal\BizRadioXInternal\BizRadioXInternal\Controllers\KeyWordEmailController.cs:21
lambda_method(Closure , ControllerBase , Object[] ) +62
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +17
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +208
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +55
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +191
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +343
System.Web.Mvc.Controller.ExecuteCore() +116
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +97
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +37
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21
System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +50
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8963149
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184
我到底做错了什么？
更新：问题的根本原因似乎在 global.asax 文件中。我正在使用 MVC Miniprofiler，如果我注释掉“MiniProfilerEF.Initialize();” 一切正常。这是 global.asax 文件的内容
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using MvcMiniProfiler;
namespace BizRadioXInternal
{
// Note: For instructions on enabling IIS6 or IIS7 classic mode,
// visit http://go.microsoft.com/?LinkId=9394801
public class MvcApplication : System.Web.HttpApplication
{
public void Application_BeginRequest()
{
if (Request.IsLocal)
{
MiniProfiler.Start();
}
}
public void Application_EndRequest()
{
if (Request.IsLocal)
{
MiniProfiler.Stop();
}
}
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new HandleErrorAttribute());
}
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
);
}
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
MiniProfilerEF.Initialize();
}
}
}