“/”应用程序中的服务器错误。

等待的操作过时。

说明: 执行当前 Web 请求期间,出现未经处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.ComponentModel.Win32Exception: 等待的操作过时。

源错误:


行 440:        using (SiteCmsDataContext db = new SiteCmsDataContext())
行 441:        {
行 442:            var temp = db.ClassInfo.Where(w => w.ClassId == classId).SingleOrDefault();
行 443:            return temp;
行 444:        }

源文件: c:\WEB\JinKong\App_Code\SiteClass.cs    行: 442

堆栈跟踪:


[Win32Exception (0x80004005): 等待的操作过时。]

[SqlException (0x80131904): 连接超时时间已到。在尝试使用预登录握手确认时超过了此超时时间。这可能是因为预登录握手失败或服务器未能及时响应。  尝试连接到此服务器时花费的持续时间是 - [Pre-Login] initialization=1;handshake=15007;]
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) +357
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +79
   System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +201
   System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +156
   System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +22
   System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +92
   System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +219
   System.Data.SqlClient.SqlConnection.Open() +101
   System.Data.Linq.SqlClient.SqlConnectionManager.UseConnection(IConnectionUser user) +43
   System.Data.Linq.SqlClient.SqlProvider.get_IsSqlCe() +42
   System.Data.Linq.SqlClient.SqlProvider.InitializeProviderMode() +22
   System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +58
   System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute(Expression expression) +58
   System.Linq.Queryable.SingleOrDefault(IQueryable`1 source) +220
   SiteClass.getClassInfoDetail(Int32 classId) in c:\WEB\JinKong\App_Code\SiteClass.cs:442
   information.Page_Load(Object sender, EventArgs e) in c:\WEB\JinKong\information.aspx.cs:15
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


版本信息: Microsoft .NET Framework 版本:4.0.30319; ASP.NET 版本:4.8.4667.0