“/”应用程序中的服务器错误




。

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行 88:         string str = "select * from booktype where parent_id=175";
行 89:         DataSet ds = DBClass.GetTableData(str, "table1");
行 90:         if (ds.Tables[0].Rows.Count > 0)
行 91:         {
行 92:             for (int i = 0; i < ds.Tables[0].Rows.Count; i++)

[NullReferenceException: 未将对象引用设置到对象的实例。]
   productview.gettype() in d:\wwwroot\shanghaihuabao\wwwroot\productview.aspx.cs:90
   productview.Page_Load(Object sender, EventArgs e) in d:\wwwroot\shanghaihuabao\wwwroot\productview.aspx.cs:17
   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