[InvalidOperationException: ExecuteReader: CommandText 属性尚未初始化]
SqlDBHelper.GetDataTable(String sql) in d:\wwwroot\wys766\wwwroot\App_code\SqlDBHelper.cs:249
trip_list.binddata(String sql1) in d:\wwwroot\wys766\wwwroot\trip\list.aspx.cs:55
trip_list.Page_Load(Object sender, EventArgs e) in d:\wwwroot\wys766\wwwroot\trip\list.aspx.cs:49
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +50
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627
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