“/”应用程序中的服务器错误。

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行 24:       //  nid = Convert.ToInt32(prodetail.ClassId);
行 25:      //   tid = Convert.ToInt32(SiteClass.getClassInfoDetail(Convert.ToInt32(nid)).ParentId);
行 26:         string[] arr = prodetail.note10.ToString().Split(',');
行 27:         for (int i = 0; i < arr.Length; i++)
行 28:         {

[NullReferenceException: 未将对象引用设置到对象的实例。]
   Index.Page_Load(Object sender, EventArgs e) in c:\WEB\JG\www.fpi-inc.com_2021\product_cont.aspx.cs:26
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693