“/”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 53:          var nTs = (from a in dl.classlist where a.Id == nid select a).FirstOrDefault();
行 54:     }
行 55:     @if(nTs.CType!=0)
行 56:     { 
行 57:     <div class="TitleBg">

源文件: f:\usr\localuser\qxw1193260098\contents\immigration\page.cshtml    行: 55

堆栈跟踪:


[NullReferenceException: 未将对象引用设置到对象的实例。]
   ASP._Page_contents_immigration_page_cshtml.Execute() in f:\usr\localuser\qxw1193260098\contents\immigration\page.cshtml:55
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +199
   System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors) +69
   System.Web.WebPages.WebPage.ExecutePageHierarchy() +131
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +90
   System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +233
   System.Web.WebPages.HelperResult.WriteTo(TextWriter writer) +10
   System.Web.WebPages.WebPageBase.Write(HelperResult result) +80
   ASP._Page_immigration_cshtml.Execute() in f:\usr\localuser\qxw1193260098\immigration.cshtml:96
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +199
   System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors) +69
   System.Web.WebPages.WebPage.ExecutePageHierarchy() +131
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +78
   System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContextBase httpContext) +116


版本信息: Microsoft .NET Framework 版本:4.0.30319; ASP.NET 版本:4.0.30319.34209