asp.net-mvc – 如何在ASP.NET控制器中获取“MvcApplication”实例？

我认为MvcApplication是一个全局的 singleton.我想在控制器中获取MvcApplication的实例。然后我把以下代码放在控制器中：

MvcApplication app = HttpContext.Current.Application as MvcApplication;

它给我一个错误：

Error 2 ‘System.Web.HttpContextBase’ does not contain a deFinition for ‘Current’ and no extension method ‘Current’ accepting a first argument of type ‘System.Web.HttpContextBase’ Could be found (are you missing a using directive or an assembly reference?)

为什么？如何在控制器中访问MvcApplication？

解决方法

尝试这个：

var app = HttpContext.ApplicationInstance as MvcApplication;