[InvalidOperationException: ExecuteReader 要求已打开且可用的 Connection。连接的当前状态为已关闭。]
System.Data.OleDb.OleDbConnection.CheckStateOpen(String method) +1203772
System.Data.OleDb.OleDbCommand.ValidateConnection(String method) +25
System.Data.OleDb.OleDbCommand.ValidateConnectionAndTransaction(String method) +19
System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) +52
System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior) +115
DBhelper.ExecNonReader(String cmdText) +162
other_view.Page_Load(Object sender, EventArgs e) +159
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
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