PerformanceCounterCategory category	=	new PerformanceCounterCategory("Network Interface");
NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();

foreach (string name in category.GetInstanceNames())
{
      Console.WriteLine(name);

     var item = nics.FirstOrDefault(i => i.Description == name);
     if(item!=null)
          Console.WriteLine(item.Description);
}

    networkCard = networkCard.Replace("\\", "_");
    networkCard = networkCard.Replace("/", "_");
    networkCard = networkCard.Replace("(", "[");
    networkCard = networkCard.Replace(")", "]");
    networkCard = networkCard.Replace("#", "_");