[ArgumentNullException: 值不能为 null。
参数名: String]
System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +179
System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +175
System.Int32.Parse(String s) +23
PCshop_Default.Page_Load(Object sender, EventArgs e) +131
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +85
System.Web.UI.Control.OnLoad(EventArgs e) +74
System.Web.UI.Control.LoadRecursive() +120
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2843
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