[ArgumentNullException: 值不能为 null。
参数名: String]
System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +14345611
System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +305
ASP.about_aspx.__Renderform1(HtmlTextWriter __w, Control parameterContainer) +234
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +131
System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +394
System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +49
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +150
ASP.about_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) +192
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +131
System.Web.UI.Page.Render(HtmlTextWriter writer) +40
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +150
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5363
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