获取MAC地址

一个网友分享的他的代码：
1 using System.Management;
 2 public string GetMacAddress()
 3         {
 4             ManagementClass adapters = new ManagementClass("Win32_NetworkAdapterConfiguration");
 5             string MACAddress = "";
 6             foreach (ManagementObject adapter in adapters.GetInstances())
 7             {
 8                 if ((bool)adapter["IPEnabled"] == true)
 9                 {
10                     MACAddress += adapter.Properties["MACAddress"].Value.ToString();
11                 }
12             }
13             return MACAddress;
14         }