c#获取主机名称网卡MACIP地址

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Diagnostics;
using System.DirectoryServices;
using System.ServiceProcess;
//工程引用System.Management.DLL
using System.Management;
using System.Net;
using System.Net.Sockets;

private void MainForm_Load(object sender, System.EventArgs e)
{
string s="",mac="";
//获取主机名称name
string hostInfo = Dns.GetHostName();
//获取主机IP地址
System.Net.IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList;
for (int i = 0; i < addressList.Length; i ++)
{
s += addressList[i].ToString();
}
//获取主机网卡MAC
ManagementClass mc;
mc=new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc=mc.GetInstances();
foreach(ManagementObject mo in moc)
{
if(mo["IPEnabled"].ToString()=="True")
mac=mo["MacAddress"].ToString();
}
textBox1.Text=hostInfo;
textBox2.Text=s;
textBox3.Text=mac;
}