C#winform程序获取本机IP地址

代码如下:

public static string GetLocalIp()
        {
            string ip = "1.1.1.1" ;
            try
            {
                string HostName = Dns.GetHostName(); //得到主机名
                IPHostEntry IpEntry = Dns.GetHostEntry(HostName);
                for (int i = 0; i < IpEntry.AddressList.Length; i++)
                {
                    //从IP地址列表中筛选出IPv4类型的IP地址
                    //AddressFamily.InterNetwork表示此IP为IPv4,
                    //AddressFamily.InterNetworkV6表示此地址为IPv6类型
                    if (IpEntry.AddressList[i].AddressFamily == AddressFamily.InterNetwork)
                    {
                        ip = IpEntry.AddressList[i].ToString();
                        return ip;
                    }
                }
                return ip;
            }
            catch (Exception ex)
            {
                MessageBox.Show("获取本机IP出错:" + ex.Message);
                return ip;
            }  
        }