“/”应用程序中的服务器错误。

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[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=14995；]
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) +353
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +118
   System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +268
   System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +315
   System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +128
   System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +265
   System.Data.SqlClient.SqlConnection.Open() +133
   WebBase.DBUtility.SqlHelper.PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, String cmdText, SqlParameter[] cmdParms) in f:\mywork\b2b168\WebApp\B2bBase\SQLHelper.cs:203
   WebBase.DBUtility.SqlHelper.ExecuteReader(String connectionString, CommandType cmdType, String cmdText, SqlParameter[] commandParameters) in f:\mywork\b2b168\WebApp\B2bBase\SQLHelper.cs:133
   WebBase.Shop.ShopBase.GetDataRec(Int32 iValue, Int32 iRenew) in f:\mywork\b2b168\WebApp\B2bBase\ShopBase.cs:5695
   WebBase.Shop.ShopBase.GetDataRec(Int32 iValue) in f:\mywork\b2b168\WebApp\B2bBase\ShopBase.cs:5634
   WebApp.Index.GetShopInfo() in f:\mywork\b2b168\WebApp\WebApp\Index.aspx.cs:493
   WebApp.Index.Page_Load(Object sender, EventArgs e) in f:\mywork\b2b168\WebApp\WebApp\Index.aspx.cs:135
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533