How to: Detect Network Availability and Address Changes
This sample shows how to detect changes in the network address of an interface.
using System;
using System.Net;
using System.Net.NetworkInformation;
namespace Examples.Net.AddressChanges
{
public class NetworkingExample
{
public static void Main()
{
NetworkChange.NetworkAddressChanged += new
NetworkAddressChangedEventHandler(AddressChangedCallback);
Console.WriteLine("Listening for address changes. Press any key to exit.");
Console.ReadLine();
}
static void AddressChangedCallback(object sender, EventArgs e)
{
NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
foreach(NetworkInterface n in adapters)
{
Console.WriteLine(" {0} is {1}", n.Name, n.OperationalStatus);
}
}
}
}
This example requires:
- References to the System.Net namespace.