新 ASP.NET MVC 4 项目的异常

Question

我创建了一个新的 aspx MVC 4 项目。我在默认的 MVC 4 模板之上创建了一些新文件。但是，现在，当我在系统上单击注册时，我得到了一个例外。我没有在收银机上更改任何内容，只是添加了一些视图。我得到的异常如下所示。有谁知道如何解决这一问题？ 非常感谢，

约翰

System.Reflection.TargetInvocationException was unhandled by user code
  HResult=-2146232828
  Message=Exception has been thrown by the target of an invocation.
  Source=mscorlib
  StackTrace:
       at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
       at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
       at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
       at System.Activator.CreateInstance(Type type, Boolean nonPublic)
       at System.Activator.CreateInstance(Type type)
       at System.Threading.LazyHelpers`1.ActivatorFactorySelector()
       at System.Threading.LazyInitializer.EnsureInitializedCore[T](T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory)
       at System.Threading.LazyInitializer.EnsureInitialized[T](T& target, Boolean& initialized, Object& syncLock)
       at Project_Team5.Filters.InitializeSimpleMembershipAttribute.OnActionExecuting(ActionExecutingContext filterContext) in c:\Users\john_000\Documents\Visual Studio 2013\Projects\Project_Team5\Project_Team5\Filters\InitializeSimpleMembershipAttribute.cs:line 21
       at System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeActionMethodFilterAsynchronously(IActionFilter filter, ActionExecutingContext preContext, Func`1 nextInChain)
       at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<>c__DisplayClass39.<>c__DisplayClass3b.<BeginInvokeActionMethodWithFilters>b__35()
       at System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeActionMethodFilterAsynchronously(IActionFilter filter, ActionExecutingContext preContext, Func`1 nextInChain)
  InnerException: System.InvalidOperationException
       HResult=-2146233079
       Message=The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588
       Source=Project_Team5
       StackTrace:
            at Project_Team5.Filters.InitializeSimpleMembershipAttribute.SimpleMembershipInitializer..ctor() in c:\Users\john_000\Documents\Visual Studio 2013\Projects\Project_Team5\Project_Team5\Filters\InitializeSimpleMembershipAttribute.cs:line 45
       InnerException: System.InvalidOperationException
            HResult=-2146233079
            Message=The entity types 'CompanyType' and 'Company' cannot share table 'Company' because they are not in the same type hierarchy or do not have a valid one to one foreign key relationship with matching primary keys between them.
            Source=EntityFramework
            StackTrace:
                 at System.Data.Entity.ModelConfiguration.Configuration.Mapping.EntityMappingConfiguration.UpdateColumnNamesForTableSharing(DbDatabaseMapping databaseMapping, EdmEntityType entityType, DbTableMetadata toTable, DbEntityTypeMappingFragment fragment)
                 at System.Data.Entity.ModelConfiguration.Configuration.Mapping.EntityMappingConfiguration.FindOrCreateTargetTable(DbDatabaseMapping databaseMapping, DbEntityTypeMappingFragment fragment, EdmEntityType entityType, DbTableMetadata fromTable, Boolean isIdentityTable, Boolean& isTableSharing)
                 at System.Data.Entity.ModelConfiguration.Configuration.Mapping.EntityMappingConfiguration.Configure(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest, EdmEntityType entityType, DbEntityTypeMapping& entityTypeMapping, Boolean isMappingAnyInheritedProperty, Int32 configurationIndex, Int32 configurationCount)
                 at System.Data.Entity.ModelConfiguration.Configuration.Types.EntityTypeConfiguration.ConfigureTablesAndConditions(DbEntityTypeMapping entityTypeMapping, DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest)
                 at System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.ConfigureEntityTypes(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest)
                 at System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.Configure(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest)
                 at System.Data.Entity.DbModelBuilder.Build(DbProviderManifest providerManifest, DbProviderInfo providerInfo)
                 at System.Data.Entity.DbModelBuilder.Build(DbConnection providerConnection)
                 at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext)
                 at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input)
                 at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
                 at System.Data.Entity.Internal.InternalContext.CreateObjectContextForDdlOps()
                 at System.Data.Entity.Database.Exists()
                 at Project_Team5.Filters.InitializeSimpleMembershipAttribute.SimpleMembershipInitializer..ctor() in c:\Users\john_000\Documents\Visual Studio 2013\Projects\Project_Team5\Project_Team5\Filters\InitializeSimpleMembershipAttribute.cs:line 34
            InnerException: 

Answer 1

我遇到了同样的问题。我通过启用并运行我的 SQL Server 服务解决了这个问题。

对我来说，我作为管理员在 Windows 7 机器上执行了以下操作 在开始菜单中：输入服务 > 按回车键 > 找到 SQL Server(SQLExpress) > 右键单击​​ > 单击属性 > 如果禁用启动类型，则切换到自动或手动 > 单击开始

希望这会有所帮助。