在我的项目中,我使用带有实体框架的 SQL CE 3.5 数据库并遵循 这篇文章 ,但我有这个例外:
无法加载与版本 8080 的 ADO.NET 提供程序对应的 SQL Server Compact 本机组件。请安装正确版本的 SQL Server Compact。有关详细信息,请参阅知识库文章 974247。
所有细节
System.Data.SqlServerCe.SqlCeException was unhandled
Message=Unable to load the native components of SQL Server Compact corresponding to the ADO.NET provider of version 8080. Install the correct version of SQL Server Compact. Refer to KB article 974247 for more details.
Source=""
HResult=-1
NativeError=-1
StackTrace:
at System.Data.SqlServerCe.NativeMethods.LoadNativeBinaries()
at System.Data.SqlServerCe.SqlCeConnection..ctor()
at System.Data.SqlServerCe.SqlCeProviderFactory.CreateConnection()
at System.Data.EntityClient.EntityConnection.GetStoreConnection(DbProviderFactory factory)
at System.Data.EntityClient.EntityConnection.ChangeConnectionString(String newConnectionString)
at System.Data.Objects.ObjectContext..ctor(String connectionString, String defaultContainerName)
at DAL.OimDBEntities..ctor()
at DAL.OimRepository..ctor()
at Microsoft.Rtc.Collaboration.Sample.SubscribePresenceView.UCMASampleSubscribePresenceView.Subscribe()
at Microsoft.Rtc.Collaboration.Sample.SubscribePresenceView.UCMASampleSubscribePresenceView.Run()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: System.DllNotFoundException
Message=Unable to load DLL 'sqlceme35.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
Source=System.Data.SqlServerCe
TypeName=""
StackTrace:
at System.Data.SqlServerCe.NativeMethods.GetSqlCeVersionInfo(IntPtr& pwszVersion)
at System.Data.SqlServerCe.NativeMethods.LoadValidLibrary(String modulePath, Int32 moduleVersion)
at System.Data.SqlServerCe.NativeMethods.LoadNativeBinaries()
InnerException: