“/”应用程序中的服务器错误。

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行 48:                 return null;
行 49:             }
行 50:         }
行 51:         /// <summary>
行 52:         /// 公开属性ErrorMessage，返回错误信息

[OleDbException (0x8000ffff): 没有可用的错误消息，结果代码: E_UNEXPECTED(0x8000FFFF)。]
   System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) +336
   System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) +116
   System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) +45
   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +153
   System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +257
   System.Data.OleDb.OleDbConnection.Open() +47
   MingTa.include.OperateDB.DBconn() in d:\website\lajs_netweb\App_Code\include\OperateDB.cs:50
   info.ConnectionOpen() in d:\website\lajs_netweb\info.aspx.cs:127
   info.Page_Load(Object sender, EventArgs e) in d:\website\lajs_netweb\info.aspx.cs:23
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +137
   System.Web.UI.Control.LoadRecursive() +98
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2524