IpAddress算法

 

        /// <summary>
        /// GetIp
        /// </summary>
        /// <param name="strIp">ip地址</param>
        /// <returns></returns>
        public static Double GetIp(string strIp)
        {
            //用来保存IP的四个段
            double[] ip = new double[4];
            String[] str = strIp.Split('.');
            for (int i = 0; i < str.Length; i++)
            {
                ip[i] = double.Parse(str[i]);
            }
            ip[0] = ip[0] * 256 * 256 * 256;
            ip[1] = ip[1] * 256 * 256;
            ip[2] = ip[2] * 256;
            Double Ip = ip[0] + ip[1] + ip[2] + ip[3];
            return Ip;
        }