“/”应用程序中的服务器错误。

未将对象引用设置到对象的实例。

说明: 执行当前 Web 请求期间,出现未经处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。

源错误:


行 138:            strSql = "select a.*,b.Title as bTitle from ProductInfo a left join ProType b on a.Ftype=b.Id where a.Ftype in(" + sbTypeId.ToString().Trim(',') + ") order by  instr('," + sbTypeId.ToString().Trim(',') + ",',b.Id),b.Orders asc, a.Orders asc";
行 139:            //strSql = "select a.*,b.Title as bname,c.Title as cname from (ProductInfo a left join ProType b on a.Type=b.Id) left join ProType c on a.FType=c.Id where a.Ftype=" + strId + " order by c.Orders asc ,b.Orders asc,a.Orders asc";
行 140:            strTitle = DBHelpers.ExecuteScalar(DBHelpers.conn, "select Title from ProType where Id=" + strId + "", null).ToString();
行 141:        }else if(Request["Title"]!=null){
行 142:	    foreach (ProductType PInfo in ListTypeInfo)

源文件: d:\vhostroot\localuser\drick69\www\Products.aspx.cs    行: 140

堆栈跟踪:


[NullReferenceException: 未将对象引用设置到对象的实例。]
   Products.ProInfo() in d:\vhostroot\localuser\drick69\www\Products.aspx.cs:140
   Products.Page_Load(Object sender, EventArgs e) in d:\vhostroot\localuser\drick69\www\Products.aspx.cs:31
   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


版本信息: Microsoft .NET Framework 版本:4.0.30319; ASP.NET 版本:4.8.4700.0