“/”应用程序中的服务器错误。

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行 105:        OleDbDataReader rdrtype = cmdtype.ExecuteReader();
行 106:        rdrtype.Read();
行 107:        classid = Convert.ToInt32(rdrtype["classid"]);
行 108:
行 109:

[InvalidOperationException: 不存在此行/列的数据。]
   System.Data.OleDb.OleDbDataReader.DoValueCheck(Int32 ordinal) +1040615
   System.Data.OleDb.OleDbDataReader.GetValue(Int32 ordinal) +12
   System.Data.OleDb.OleDbDataReader.get_Item(String name) +27
   web_sdetail.Page_Load(Object sender, EventArgs e) in f:\usr\localuser\qxw2062370168\Aspx\sdetail.aspx.cs:107
   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