c# 得到電腦IP及電腦名

       using System.Net;

        /// <summary>
        /// 得到用戶電腦資訊
        /// </summary>
        public void GetUserInfo()
        {
            string sIP = "";

            //得到計算機名 方法1
            string MachineName = System.Environment.MachineName;
            //得到計算機名 方法2
            string strHostName = Dns.GetHostName();

            IPAddress[] addr;

            //得到IP 方法1
            //addr = Dns.GetHostAddresses(strHostName);
            //得到IP 方法2
            addr = Dns.GetHostAddresses("127.0.0.1");
            //得到IP 方法3
            //addr = Dns.GetHostAddresses("localhost");

            //得到IP 方法4
            //IPHostEntry ihIP = Dns.GetHostEntry(strHostName);
            //addr = ihIP.AddressList;

            //得到IP 方法5 此句顯示老式語句警告
            addr = Dns.GetHostByName(Dns.GetHostName()).AddressList;

            if (addr.Length<=1)
            {
                sIP = addr[0].ToString();
            }
            else
            {
                for (int iCount = 0; iCount < addr.Length; iCount++)
                {
                    sIP += "IP" + (iCount + 1).ToString() + ":" + addr[iCount].ToString() + " ";
                }
            }           
        }