“/”应用程序中的服务器错误。

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行 27:             if (conn.State == ConnectionState.Closed)
行 28:             {
行 29:                  conn.Open();
行 30:             }
行 31:             return conn;

[OleDbException (0x80004005): 未指定的错误]
   System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) +334
   System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) +92
   System.Data.ProviderBase.DbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) +24
   System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions) +38
   System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +531
   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.ProviderBase.DbConnectionInternal.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +19
   System.Data.OleDb.OleDbConnection.Open() +43
   OleDbHelper.getConn() in e:\web\xinhuide.com_2018.6.22\App_Code\OleDbHelper.cs:29
   OleDbHelper.Table(String cmdText, OleDbParameter[] pars, CommandType ct) in e:\web\xinhuide.com_2018.6.22\App_Code\OleDbHelper.cs:118
   DownClass.Table_one_count(String one_id, Int32 count) in e:\web\xinhuide.com_2018.6.22\App_Code\DownClass.cs:90
   HD_part_01.Page_Load(Object sender, EventArgs e) in e:\web\xinhuide.com_2018.6.22\HD_part_01.ascx.cs:18
   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.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693