/// <summary>

        /// 获取客户端操作系统版本

        /// </summary>

        /// <returns></returns>

        public static string GetOSName()

        {

            if (HttpContext.Current == null || HttpContext.Current.Request == null || HttpContext.Current.Request.UserAgent == null)

            { return "未知"; }

            var userAgent = HttpContext.Current.Request.UserAgent.ToLower();

            if (userAgent.Contains("android"))

            { return "Android"; }

            else if (userAgent.Contains("mac os x"))

            { return "ios"; }

            else if (userAgent.Contains("windows phone"))

            { return "Windows Phone"; }

            else if (userAgent.Contains("nt 10.0"))

            { return "Windows 10"; }

            else if (userAgent.Contains("NT 6.3"))

            { return "Windows8.1"; }

            else if (userAgent.Contains("NT 6.2"))

            { return "Windows8"; }

            else if (userAgent.Contains("nt 6.1"))

            { return "Windows 7"; }

            else if (userAgent.Contains("nt 6.0"))

            { return "Windows Vista/Server 2008"; }

            else if (userAgent.Contains("nt 5.2"))

            { return "Windows Server 2003"; }

            else if (userAgent.Contains("nt 5.1"))

            { return "Windows XP"; }

            else if (userAgent.Contains("nt 5"))

            { return "Windows 2000"; }

            else if (userAgent.Contains("nt 4"))

            { return "Windows NT4"; }

            else if (userAgent.Contains("me"))

            { return "Windows Me"; }

            else if (userAgent.Contains(""))

            { return "Windows 98"; }

            else if (userAgent.Contains(""))

            { return "Windows 95"; }

            else if (userAgent.Contains("mac"))

            { return "Mac"; }

            else if (userAgent.Contains("unix"))

            { return "UNIX"; }

            else if (userAgent.Contains("linux"))

            { return "Linux"; }

            else if (userAgent.Contains("sunos"))

            { return "SunOS"; }

            return "未知";

        }

        /// <summary>

        /// 获取浏览器名称

        /// </summary>

        /// <returns></returns>

        public static string GetBrowser()

        {

            if (HttpContext.Current == null || HttpContext.Current.Request == null || HttpContext.Current.Request.UserAgent == null)

            { return "未知"; }

            var userAgent = HttpContext.Current.Request.UserAgent.ToLower();

            if (userAgent.Contains("opera/ucweb"))

            { return "UC Opera"; }

            else if (userAgent.Contains("openwave/ ucweb"))

            { return "UCOpenwave"; }

            else if (userAgent.Contains("ucweb"))

            { return "UC"; }

            else if (userAgent.Contains("360se"))

            { return ""; }

            else if (userAgent.Contains("metasr"))

            { return "搜狗"; }

            else if (userAgent.Contains("maxthon"))

            { return "遨游"; }

            else if (userAgent.Contains("the world"))

            { return "世界之窗"; }

            else if (userAgent.Contains("tencenttraveler") || userAgent.Contains("qqbrowser"))

            { return "腾讯"; }

            else if (userAgent.Contains("chrome"))

            { return "Chrome"; }

            else if (userAgent.Contains("safari"))

            { return "safari"; }

            else if (userAgent.Contains("firefox"))

            { return "Firefox"; }

            else if (userAgent.Contains("opera"))

            { return "Opera"; }

            else if (userAgent.Contains("msie"))

            { return "IE"; }

            else

            { return System.Web.HttpContext.Current.Request.Browser.Browser; }

        }

        /// <summary>

        /// 取得客户端IP

        /// </summary>

        /// <returns></returns>

        public static string GetClientIp()

        {

            var result = "0.0.0.0";

            if (HttpContext.Current == null && HttpContext.Current.Request == null)

            { return result; }

            result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

            if (result == null || result == String.Empty)

            {

                result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

            }

            if (result == null || result == String.Empty)

            {

                result = HttpContext.Current.Request.UserHostAddress;

            }

            if (result == null || result == String.Empty)

            {

                result = "0.0.0.0";

            }

            return result;

        }