获取本机的ip

 public static IPAddress[] GetLocalIpAddress()
        {
            //显示本机内网IPv4地址 win7系统
            var hostName = Dns.GetHostName();
            var hostEntry = Dns.GetHostEntry(hostName);
            var addressList = hostEntry.AddressList;
            var ipv4Addresses = addressList.Where(x => x.AddressFamily == AddressFamily.InterNetwork).ToArray();
            return ipv4Addresses;
        }