我有程序列出硬盘驱动器和网络接口，如在这张图片：

如果我点击硬盘名称，我可以看到文本框中的驱动器类型。这是工作正常。但是，如果我尝试在网络接口上的这个代码不工作。它给出了错误CS0144：无法创建抽象类型或接口"NetworkInterface"的示例
代码如下：

private void button2_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            textBox1.Text = "";
            DriveInfo[] Drives = DriveInfo.GetDrives();
            foreach (DriveInfo drv in Drives)
            {
                listBox1.Items.Add(drv.Name);
            }
        }
        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            String strDrive = (string)listBox1.SelectedItem;
            DriveInfo drive = new DriveInfo(strDrive);

            textBox1.Text = drive.DriveType.ToString();
        }

这里是不工作的网络接口：

private void button3_Click(object sender, EventArgs e)
        {
            listBox2.Items.Clear();
            textBox2.Text = "";
            NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
            foreach (NetworkInterface adapter in adapters)
            {
                listBox2.Items.Add(adapter.Name);
            }
        }

        private void listBox2_SelectedIndexChanged(object sender, EventArgs e)
        {
            String strInterface = (string)listBox2.SelectedItem;
            NetworkInterface adapter = new NetworkInterface(strInterface);
            textBox2.Text = adapter.Description.ToString();
        }

这一行是错误的：网络接口适配器=新的网络接口（strInterface）;