How to get default NIC Connection Name

Question

IMPORTANT EDIT: Back again on this subject. As you said there should be no default NIC, I\'m trying to understand if there is a way to detect all the NICs t

Answer 1

You can use the WMI class Win32_NetworkAdapter to enumerate all the adapters and it has an Index property which might mean that the one with 0 or 1 as the Index is the default one, or one of the other properties might help to find the default one.

Something like this maybe:

Edit: Fixed broken code (this is at least more likely to work). But following what abatishchev said I think you might need to use Win32_NetworkAdapterConfiguration.IPConnectionMetric to find the default adapter...

ManagementClass mc = new ManagementClass("Win32_NetworkAdapter");
foreach (ManagementObject mo in mc.GetInstances())
{
     int index = Convert.ToInt32(mo["Index"]);
     string name = mo["NetConnectionID"] as string;
     if (!string.IsNullOrEmpty(name))
          textBox1.Text += name + Environment.NewLine;
}