将IP地址转换成等效的数字

 

 /**//// <summary>
        /// 将IP地址字符串转换成等效的数字值
        /// </summary>
        /// <param name="ip">IP地址</param>
        /// <returns>返回IP数字值</returns>
        public static uint IPToInt ( string ip )
        ...{
            IPAddress IP;
            uint ipvalue = 0;
            //若为合法的IP地址，则进行转换
            if (IPAddress.TryParse(ip, out IP))
            ...{
                String[] _ip = IP.ToString().Split('.');
                for (int i = 0; i < 4; i++)
                ...{
                    if (i != 3)
                    ...{
                        ipvalue = ipvalue +(uint)System.Convert.ToUInt32(_ip[i]) << 8;
                    }                  
                }
                ipvalue += (uint)System.Convert.ToUInt32(_ip[3]);
            }
            return ipvalue;
        }