Object reference not set to an instance of an object.



The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

   <%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
    <system.web>
        <compilation debug="true"/>
    </system.web>
</configuration>

 Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.


[NullReferenceException: beplay体育网页版下载_beplay官网体育下载_beplay安卓下载]
   DTcms.Web.UI.Page.article_list.ShowPage() in F:\项目\模板重做\A113 模板 张杰\web 4.0\DTcms.Web.UI\Page\article_list.cs:60
   DTcms.Web.UI.BasePage..ctor() in F:\项目\模板重做\A113 模板 张杰\web 4.0\DTcms.Web.UI\BasePage.cs:37
   DTcms.Web.UI.Page.article_list..ctor() in F:\项目\模板重做\A113 模板 张杰\web 4.0\DTcms.Web.UI\Page\article_list.cs:20
   ASP.aspx_main_product_list_aspx..ctor() in c:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\d72f6572\75d5a961\App_Web_rryameac.4.cs:0
   __ASP.FastObjectFactory_app_web_rryameac.Create_ASP_aspx_main_product_list_aspx() in c:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\d72f6572\75d5a961\App_Web_rryameac.7.cs:0
   System.Web.Compilation.BuildResultCompiledType.CreateInstance() +32
   System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp) +109
   System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +31
   System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +40
   System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +167
   System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +128
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

Server Error in '/' Application.

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