直接进入正题。
在HomeController中有一个NotFound的Action方法。
public ActionResult NotFound(){ ???return View();}对应的视图
@{ ???Layout = null;}<!DOCTYPE html><html><head> ???<meta charset="utf-8" /> ???<meta name="viewport" content="width=device-width" /> ???<title>出错了</title></head><body> ???<div style="text-align:center;font-size:1.5em"> ????????为什么受伤的总是我 o(╥﹏╥)o ???</div></body></html>在Global.asax.cs中定义的Application_Error方法，在方法中获取错误并判断是否是静态资源的404错误，如果不是，则使用自定义的错误页显示
private readonly string[] staticFileExt = new string[] { ".axd", ".ashx", ".bmp", ".css", ".gif", ".htm", ".html", ".ico", ".jpeg", ".jpg", ".js", ".png", ".rar", ".zip",".woff",".ttf" ,".eot",".svg"};protected void Application_Error(){ ???var error = Server.GetLastError() as HttpException; ???if (error!= null && error.GetHttpCode() == 404) ???{ ???????if (!IsStaticResource(Request)) ???????{ ???????????Response.Clear(); ???????????Server.ClearError(); ???????????Response.TrySkipIisCustomErrors = true; ???????????IController controller = new HomeController(); ???????????var routeData = new RouteData(); ???????????routeData.Values.Add("controller", "Home"); ???????????routeData.Values.Add("action", "NotFound"); ???????????controller.Execute(new RequestContext(new HttpContextWrapper(Context), routeData)); ???????} ???}}private bool IsStaticResource(HttpRequest request){ ???string extension = VirtualPathUtility.GetExtension(request.Path); ???return staticFileExt.Contains(extension);}当前台访问存在的页面或资源时：
当访问不存在的非静态资源时，显示自定义错误页
当访问不存在的静态资源时：
MVC 实现自定义404错误页
原文地址：http://www.cnblogs.com/godbell/p/7811979.html