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C#实现获取串口通信口

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using System.IO;

namespace TemperatureTest_WPF
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
        private void ButtonTest_Click(object sender, RoutedEventArgs e)//主要程序
        {

            //获取电脑上可用串口号
            string[] portsUSB = SerialPort.GetPortNames();
            if (portsUSB == null || portsUSB.Length == 0)//判断有无可用的串口
            {
                USBlist.Items.Clear();
                USBlist.Items.Add("None");

            }
            else
            {
                USBlist.Items.Clear();
                foreach (string port in portsUSB)
                {
                    USBlist.Items.Add(port);//给list添加数据
                }

            }
            USBlist.SelectedIndex = USBlist.Items.Count > 0 ? 0 : -1;//如果里面有数据,显示第0个
        }

    }
}