如何捕获USB接口的拔插事件并获得对应的串口号 C#

Question

如题

Answer 1

        public const int WM_DEVICECHANGE = 0x219;
        public const int DBT_DEVICEARRIAL = 0x8000;
        public const int DBT_DEVICEREMOVECOMPLETE = 0x8004;
        protected override void WndProc(ref Message m)
        {
            if (m.Msg == WM_DEVICECHANGE)
            {
                switch (m.WParam.ToInt32())
                {
                    case DBT_DEVICEARRIAL:
                        {
                            DriveInfo[] dis = DriveInfo.GetDrives();
                            foreach (DriveInfo di in dis)
                            {
                                if (di.DriveType == DriveType.Removable)
                                {
                                    listBox1.Items.Add("U盘已经插入，盘符为：" + di.Name);
                                    break;
                                    
                                }
                            }
                            break;
                            
                        }
                    case DBT_DEVICEREMOVECOMPLETE:
                        {
                            listBox1.Items.Add("U盘已经移除");
                            break;
                        }
                }
            }
            base.WndProc(ref m);
        }

Answer 2

拔插靠 WM_DEVICECHANGE 事件。
楼上已说清楚。至于串口号，一般靠驱动、驱动按装时有可以已经指定了。
可是设备的ID去注册表中找。