Question

我添加了对下面静态ROLES类的引用，将角色分配给加入网站的人。当我按下JOIN ASP.Net控件上的按钮时，我测试了代码和应用程序挂起。当然，我立即尝试调试以找到问题，但我无法再访问SQL Express ASPNETDB.mdf - 错误如下所示。提前谢谢。

**The code-behind in the Join.aspx file:**
    public partial class Join : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            MembershipUser loggedIn = Membership.GetUser();
            if (loggedIn == null)
            {
                return;
            }
            else
            {
                Session["userName"] = loggedIn.UserName;
                Roles.AddUserToRole(loggedIn.ToString(), "MEMBER");

            }
        }

    }

错误消息：无法打开用户默认数据库。登录失败。用户'SFP \ Susan'登录失败。

Web配置：

<?xml version="1.0"?>

<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
    <appSettings>
        <add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:\TempImageFiles\;" />
    </appSettings>
    <system.webServer>
        <handlers>
            <remove name="ChartImageHandler" />
            <add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD,POST"
                path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
        </handlers>
    </system.webServer>
    <system.web>
        <authorization>
            <allow roles="ADMIN" />
            <allow roles="MEMBER" />
            <allow roles="GUEST" />
            <allow roles="RESTAURANT" />
        </authorization>
        <roleManager enabled="true" />
        <authentication mode="Forms" />
        <httpHandlers>
            <add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
                validate="false" />
        </httpHandlers>
        <pages>
            <controls>
                <add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting"
                    assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
            </controls>
        </pages>
        <compilation debug="true" targetFramework="4.0" />
    </system.web>
  <connectionStrings>
    <add name="FCGuideEntities" connectionString="metadata=res://*/FCGuide.csdl|res://*/FCGuide.ssdl|res://*/FCGuide.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.;attachdbfilename=|DataDirectory|\FCGuide.mdf;integrated security=True;user instance=True;multipleactiveresultsets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />
  </connectionStrings>
</configuration>

STACK TRACE

无法打开用户默认数据库。登录失败。用户'SFP \ Susan'登录失败。描述：执行当前Web请求期间发生未处理的异常。请查看堆栈跟踪以获取有关错误及其源自代码的位置的更多信息。

异常详细信息：System.Data.SqlClient.SqlException：无法打开用户默认数据库。登录失败。用户'SFP \ Susan'登录失败。

来源错误：

第48行：restCity4.Text = featuredList4 [0] .CITY.CITY_NAME; 第49行：第50行：MembershipUser loggedIn = Membership.GetUser（）; 第51行：if（loggedIn == null）第52行：{

源文件：H：\ FCGuide \ FCGuide \ default.aspx.cs行：50

堆栈追踪：

[SqlException（0x80131904）：无法打开用户默认数据库。登录失败。用户'SFP \ Susan'登录失败。] System.Data.SqlClient.SqlInternalConnection.OnError（SqlException exception，Boolean breakConnection）+5064474 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning（）+234 System.Data.SqlClient.TdsParser.Run（RunBehavior runBehavior，SqlCommand cmdHandler，SqlDataReader dataStream，BulkCopySimpleResultSet bulkCopyHandler，TdsParserStateObject stateObj）+2275 System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin（Boolean enlistOK）+35 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin（ServerInfo serverInfo，String newPassword，Boolean ignoreSniOpenTimeout，TimeoutTimer timeout，SqlConnection owningObject）+183 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover（ServerInfo serverInfo，String newPassword，Boolean redirectedUserInstance，SqlConnection owningObject，SqlConnectionString connectionOptions，TimeoutTimer timeout）+239 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist（SqlConnection owningObject，TimeoutTimer timeout，SqlConnectionString connectionOptions，String newPassword，Boolean redirectedUserInstance）+195 System.Data.SqlClient.SqlInternalConnectionTds..ctor（DbConnectionPoolIdentity identity，SqlConnectionString connectionOptions，Object providerInfo，String newPassword，SqlConnection owningObject，Boolean redirectedUserInstance）+232 System.Data.SqlClient.SqlConnectionFactory.CreateConnection（DbConnectionOptions选项，Object poolGroupProviderInfo，DbConnectionPool池，DbConnection owningConnection）+185 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection（DbConnection owningConnection，DbConnectionPool pool，DbConnectionOptions选项）+33 System.Data.ProviderBase.DbConnectionPool.CreateObject（DbConnection owningObject）+524 System.Data.ProviderBase.DbConnectionPool.UserCreateRequest（DbConnection owningObject）+66 System.Data.ProviderBase.DbConnectionPool.GetConnection（DbConnection owningObject）+479 System.Data.ProviderBase.DbConnectionFactory.GetConnection（DbConnection owningConnection）+108 System.Data.ProviderBase.DbConnectionClosed.OpenConnection（DbConnection outerConnection，DbConnectionFactory connectionFactory）+126 System.Data.SqlClient.SqlConnection.Open（）+ 125 System.Web.DataAccess.SqlConnectionHolder.Open（HttpContext context，Boolean revertImpersonate）+95 System.Web.DataAccess.SqlConnectionHelper.GetConnection（String connectionString，Boolean revertImpersonation）+206 System.Web.Security.SqlMembershipProvider.GetUser（String username，Boolean userIsOnline）+1169 System.Web.Security.Membership.GetUser（String username，Boolean userIsOnline）+63 System.Web.Security.Membership.GetUser（）+19 H：\ FCGuide \ FCGuide \ default.aspx.cs中的FCGuide._default.Page_Load（Object sender，EventArgs e）：50 System.Web.Util.CalliHelper.EventArgFunctionCaller（IntPtr fp，Object o，Object t，EventArgs e）+14 System.Web.Util.CalliEventHandlerDelegateProxy.Callback（Object sender，EventArgs e）+35 System.Web.UI.Control.OnLoad（EventArgs e）+91 System.Web.UI.Control.LoadRecursive（）+ 74 System.Web.UI.Page.ProcessRequestMain（Boolean includeStagesBeforeAsyncPoint，Boolean includeStagesAfterAsyncPoint）+2207

Answer 1

检查用户的默认数据库是否可访问，并且在该数据库中有登录用户。您可以从SSMS检查您的默认数据库是什么。

Answer 2

我无法打开它，因为我有SQL2008，而数据库ASPNETDB.MDF实际上来自SQL2008-R2。在R2打开它，然后从那里开始。

无法访问ASPNETDB.mdf

2 个答案: