Get Available Ip Addresses

.cs

public static IEnumerable<IPAddress> GetIpAddressesFromNetworkAdapters(AddressFamily addressFamily)
{
	var networkInterfaces = from networkInterface in NetworkInterface.GetAllNetworkInterfaces()
							where networkInterface.OperationalStatus == OperationalStatus.Up &&
								networkInterface.SupportsMulticast &&
								(networkInterface.NetworkInterfaceType == NetworkInterfaceType.Ethernet || 
								networkInterface.NetworkInterfaceType == NetworkInterfaceType.Wireless80211)
							select new
							{
								name = networkInterface.Name,
								ip = GetIpFromUnicastAddresses(networkInterface, addressFamily)
							};

	return networkInterfaces.Select(x => x.ip);
}

private static IPAddress GetIpFromUnicastAddresses(NetworkInterface networkInterface, AddressFamily addressFamily)
{
	return (from unicastIpAddressInfo in networkInterface.GetIPProperties().UnicastAddresses
			where unicastIpAddressInfo.Address.AddressFamily == addressFamily
			select unicastIpAddressInfo.Address).SingleOrDefault();
}