C# 獲取本機IP地址

using System.Net;
using System.Net.Sockets;

        /// <summary>
        /// 獲取本機IP地址
        /// </summary>
        /// <returns>本機IP地址</returns>
        public static string GetLocalIP()
        {
            try
            {
                string HostName = Dns.GetHostName(); //得到主機名
                IPHostEntry IpEntry = Dns.GetHostEntry(HostName);
                for (int i = 0; i < IpEntry.AddressList.Length; i++)
                {
                    //從IP地址列表中篩選出IPv4類型的IP地址
                    //AddressFamily.InterNetwork表示此IP為IPv4,
                    //AddressFamily.InterNetworkV6表示此地址為IPv6類型
                    if (IpEntry.AddressList[i].AddressFamily == AddressFamily.InterNetwork)
                    {
                        return IpEntry.AddressList[i].ToString();
                    }
                }
                return "";
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }