I assume you're looking for the list of network interfaces. It is possible through System.Net.NetworkInformation.NetworkInterface class, specifically the GetAllNetworkInterfaces() method. Here is the sample code
public static void DisplayDnsConfiguration()
{
NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface adapter in adapters)
{
IPInterfaceProperties properties = adapter.GetIPProperties();
Console.WriteLine(adapter.Description);
Console.WriteLine(" DNS suffix .............................. : {0}",
properties.DnsSuffix);
Console.WriteLine(" DNS enabled ............................. : {0}",
properties.IsDnsEnabled);
Console.WriteLine(" Dynamically configured DNS .............. : {0}",
properties.IsDynamicDnsEnabled);
}
Console.WriteLine();
}