Passingwind

        protected void Application_Start()
        {
            //自动切换移动端页面
            DefaultDisplayMode mode = new DefaultDisplayMode("mobile")
            {
                ContextCondition = c =>
                    c.GetOverriddenUserAgent().IndexOf("iPhone", StringComparison.OrdinalIgnoreCase) >= 0 ||
                    c.GetOverriddenUserAgent().IndexOf("iPad", StringComparison.OrdinalIgnoreCase) >= 0 ||
                     c.GetOverriddenUserAgent().IndexOf("Android", StringComparison.OrdinalIgnoreCase) >= 0 ||
                     c.GetOverriddenUserAgent().IndexOf(" Mobile", StringComparison.OrdinalIgnoreCase) >= 0
            };
            DisplayModeProvider.Instance.Modes.Insert(0, mode);
        }

当使用移动设备浏览网页时，将优先查找对应移动端视图 *.mobile.cshtml 。比如 Index.mobile.cshtml 。