C# 获取本机网卡信息、个数、描述信息、类型、速度等

using System.Net.NetworkInformation;
using System.Net;

namespace NetworkInterfaceExample
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
ShowAdapterInfo();
}

/// <summary>
/// 显示网卡信息
/// </summary>
private void ShowAdapterInfo()
{
NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
lst_NetworkAdapter.Items.Add("适配器个数：" + adapters.Length);
int index = 0;

foreach (NetworkInterface adapter in adapters)
{
index++;
//显示网络适配器描述信息、名称、类型、速度、MAC 地址
lst_NetworkAdapter.Items.Add("---------------------第" + index + "个适配器信息---------------------");
lst_NetworkAdapter.Items.Add("描述信息：" + adapter.Name);
lst_NetworkAdapter.Items.Add("类型：" + adapter.NetworkInterfaceType);
lst_NetworkAdapter.Items.Add("速度：" + adapter.Speed / 1000 / 1000 + "MB");
lst_NetworkAdapter.Items.Add("MAC 地址：" + adapter.GetPhysicalAddress());

//获取IPInterfaceProperties实例
IPInterfaceProperties adapterProperties = adapter.GetIPProperties();

//获取并显示DNS服务器IP地址信息
IPAddressCollection dnsServers = adapterProperties.DnsAddresses;
if (dnsServers.Count > 0)
{
foreach (IPAddress dns in dnsServers)
{
lst_NetworkAdapter.Items.Add("DNS 服务器IP地址：" + dns + "\n");
}
}
else
{
lst_NetworkAdapter.Items.Add("DNS 服务器IP地址：" + "\n");
}
}
}
}
}