C# - Capturando endereços IP

using System.Net;

string s ="";
IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList;
for (int i = 0; i < addressList.Length; i ++) s += addressList[i].ToString() + "\n";
txtBox1.Text = s;

Autor: Alexandre Ruter Facione