The error message:
並未將物件參考設定為物件的執行個體。
The error stack trace:
於 LogOn.Page_Load(Object sender, EventArgs e) 於 System.Web.UI.Control.OnLoad(EventArgs e) 於 System.Web.UI.Control.LoadRecursive() 於 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

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