Global.asax.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace MVCOnlineCount
{
	// Note: For instructions on enabling IIS6 or IIS7 classic mode, 
	// visit http://go.microsoft.com/?LinkId=9394801

	public class MvcApplication : System.Web.HttpApplication
	{
		public static void RegisterGlobalFilters(GlobalFilterCollection filters)
		{
			filters.Add(new HandleErrorAttribute());
		}

		public static void RegisterRoutes(RouteCollection routes)
		{
			routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

			routes.MapRoute(
				"Default", // Route name
				"{controller}/{action}/{id}", // URL with parameters
				new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
			);

		}

		protected void Application_Start()
		{
			Application["count"] = 0;   ///在应用程序第一次启动时初始化在线人数为0
			AreaRegistration.RegisterAllAreas();

			RegisterGlobalFilters(GlobalFilters.Filters);
			RegisterRoutes(RouteTable.Routes);
		}

		protected void Session_End(object sender, EventArgs e)
		{
			Application.Lock();
			Application["count"] = Convert.ToInt32(Application["count"]) - 1;
			Application.UnLock();
		}
	}
}