无法从Visual Studio 2008版本9.0连接SQL Server实例

Question

即使我将“工具”->“选项”->“数据库工具”->“数据连接”设置为“ SIDEKICK”（这是我的计算机的名称），我仍从32位XP Professional服务器上的VS中收到以下错误。 换句话说，SIDEKICK应该默认为完整的SQLSERVER。

换句话说，我希望VS使用SQLSERVER而不是SQLSERVER EXPRESS。 而且我可以从VS中的Server Explorer和SSMS 2008中清楚地看到我的数据库。此外，我可以从VS的Server Explorer中查看该数据库的表。 我没有任何构建错误。 而且看起来所有命名在我的web.config文件中都是一致的。

我正在根据Microsoft教程开发网站，所以我应该不会出错。 但是，当我在下面运行此代码时，出现以下异常：

CreateAccounts.aspx.cs文件

protected void CreateAccountButton_Click(object sender, EventArgs e)
    {
        MembershipCreateStatus createStatus;
//This line below is where the exception occurs
        MembershipUser newUser = Membership.CreateUser(Username.Text, Password.Text, Email.Text, passwordQuestion, SecurityAnswer.Text, true, out createStatus);

这是异常的样子：

System.Web.HttpException was unhandled by user code
  Message="Unable to connect to SQL Server database."
  Source="System.Web"
  ErrorCode=-2147467259
  StackTrace:
       at System.Web.DataAccess.SqlConnectionHelper.CreateMdfFile(String fullFileName, String dataDir, String connectionString)
       at System.Web.DataAccess.SqlConnectionHelper.EnsureSqlExpressDBFile(String connectionString)
       at System.Web.DataAccess.SqlConnectionHelper.GetConnection(String connectionString, Boolean revertImpersonation)
       at System.Web.Security.SqlMembershipProvider.CreateUser(String username, String password, String email, String passwordQuestion, String passwordAnswer, Boolean isApproved, Object providerUserKey, MembershipCreateStatus& status)
       at System.Web.Security.Membership.CreateUser(String username, String password, String email, String passwordQuestion, String passwordAnswer, Boolean isApproved, Object providerUserKey, MembershipCreateStatus& status)
       at System.Web.Security.Membership.CreateUser(String username, String password, String email, String passwordQuestion, String passwordAnswer, Boolean isApproved, MembershipCreateStatus& status)
       at Membership_CreatingUserAccounts.CreateAccountButton_Click(Object sender, EventArgs e) in c:\Documents and Settings\Admin\My Documents\Visual Studio 2008\WebSites\WebSite2\Membership\CreatingUserAccounts.aspx.cs:line 24
       at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
       at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
       at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
       at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
       at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
  InnerException: System.Web.HttpException
       Message="Unable to connect to SQL Server database."
       Source="System.Web"
       ErrorCode=-2147467259
       StackTrace:
            at System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString)
            at System.Web.Management.SqlServices.SetupApplicationServices(String server, String user, String password, Boolean trusted, String connectionString, String database, String dbFileName, SqlFeatures features, Boolean install)
            at System.Web.Management.SqlServices.Install(String database, String dbFileName, String connectionString)
            at System.Web.DataAccess.SqlConnectionHelper.CreateMdfFile(String fullFileName, String dataDir, String connectionString)
       InnerException: System.Data.SqlClient.SqlException
            Message="The user instance login flag is not supported on this version of SQL Server. The connection will be closed."
            Source=".Net SqlClient Data Provider"
            ErrorCode=-2146232060
            Class=14
            LineNumber=65536
            Number=18493
            Procedure=""
            Server="."
            State=1
            StackTrace:
                 at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
                 at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
                 at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
                 at System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK)
                 at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject)
                 at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart)
                 at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
                 at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
                 at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
                 at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
                 at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
                 at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
                 at System.Data.SqlClient.SqlConnection.Open()
                 at System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString)
            InnerException: 

web.config连接字符串如下所示：

<connectionStrings>
    <add name="SecurityTutorialsConnectionString"      
         connectionString="data source=.;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|SecurityTutorialsDatabase3.mdf;User Instance=true"      
         providerName="System.Data.SqlClient"/>

</connectionStrings>
<system.web>
    <membership defaultProvider="SecurityTutorialsSqlMembershipProvider">
        <providers>
            <add name="SecurityTutorialsSqlMembershipProvider"                
                 type="System.Web.Security.SqlMembershipProvider"                
                 connectionStringName="SecurityTutorialsConnectionString"                
                 enablePasswordRetrieval="false"                
                 enablePasswordReset="true"                
                 requiresQuestionAndAnswer="true"                
                 applicationName="SecurityTutorials"                
                 requiresUniqueEmail="true"                
                 passwordFormat="Hashed"                
                 maxInvalidPasswordAttempts="5"                
                 minRequiredPasswordLength="7"                
                 minRequiredNonalphanumericCharacters="1"                
                 passwordAttemptWindow="10"                
                 passwordStrengthRegularExpression=""/>
        </providers>
    </membership>

而且我也关闭了防火墙，所以我知道这不是原因。

Answer 1

在“ SQL Server配置管理器”中的“ SQL Server网络配置”中启用了哪些协议？

Answer 2

如果您使用的是ASP.NET，那么我建议您尝试使用“ aspnet_regsql.exe ”实用程序之类的方法，它实际上使我们能够将默认数据库连接（即SQL Express）更改为所需的任何数据库。 该实用程序可以在“ C：\\ WINDOWS \\ Microsoft.NET \\ Framework \\ v2.0.more-digits ”目录中找到。

我希望这有帮助。

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