C# 监测插入U盘程序和读取当前各类别盘符

在你的类中加入下面的程序。

        public const int WM_DEVICECHANGE = 0x219;
        public const int DBT_DEVICEARRIVAL = 0x8000;
        public const int DBT_CONFIGCHANGECANCELED = 0x0019;
        public const int DBT_CONFIGCHANGED = 0x0018;
        public const int DBT_CUSTOMEVENT = 0x8006;
        public const int DBT_DEVICEQUERYREMOVE = 0x8001;
        public const int DBT_DEVICEQUERYREMOVEFAILED = 0x8002;
        public const int DBT_DEVICEREMOVECOMPLETE = 0x8004;
        public const int DBT_DEVICEREMOVEPENDING = 0x8003;
        public const int DBT_DEVICETYPESPECIFIC = 0x8005;
        public const int DBT_DEVNODES_CHANGED = 0x0007;
        public const int DBT_QUERYCHANGECONFIG = 0x0017;
        public const int DBT_USERDEFINED = 0xFFFF;

        [StructLayout(LayoutKind.Sequential)]
        public struct DEV_BROADCAST_VOLUME
        {
            public int dbcv_size;
            public int dbcv_devicetype;
            public int dbcv_reserved;
            public int dbcv_unitmask;
        }
        protected override void WndProc(ref Message m)
        {
            try
            {
                if (m.Msg == WM_DEVICECHANGE)
                {
                    switch (m.WParam.ToInt32())
                    {
                        case WM_DEVICECHANGE:
                            break;
                        case DBT_DEVICEARRIVAL://U盘插入   
                            DriveInfo[] s = DriveInfo.GetDrives();
                            foreach (DriveInfo drive in s)
                            {
                                if (drive.DriveType == DriveType.Removable)
                                {
                                    string text1 = "U盘已插入，盘符为:" + drive.Name.ToString();
                                    break;
                                }
                            }
                            break;
                        case DBT_CONFIGCHANGECANCELED:
                            break;
                        case DBT_CONFIGCHANGED:
                            break;
                        case DBT_CUSTOMEVENT:
                            break;
                        case DBT_DEVICEQUERYREMOVE:
                            break;
                        case DBT_DEVICEQUERYREMOVEFAILED:
                            break;
                        case DBT_DEVICEREMOVECOMPLETE:   //U盘卸载 
                            string text = "";
                            break;
                        case DBT_DEVICEREMOVEPENDING:
                            break;
                        case DBT_DEVICETYPESPECIFIC:
                            break;
                        case DBT_DEVNODES_CHANGED:
                            break;
                        case DBT_QUERYCHANGECONFIG:
                            break;
                        case DBT_USERDEFINED:
                            break;
                        default:
                            break;
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            base.WndProc(ref m);
        }

查找当前磁盘中各类别的盘符

        /// <summary>
        /// 读取所有USB磁盘盘符列表
        /// </summary>
        /// <returns></returns>
        private List<string> ReadUsbDrive()
        {
            List<string> driveNames = new List<string>();
            SelectQuery sq = new SelectQuery("select * from win32_logicaldisk");
            System.Management.ManagementObjectSearcher mos = new ManagementObjectSearcher(sq);
            foreach (System.Management.ManagementObject disk in mos.Get())
            {
                //Name表示设备的名称
                //各属性的标识见联机的MSDN里，Win32 and COM Development下的WMI。
                //如http://msdn.microsoft.com/en-us/library/aa394173(VS.85).aspx
                try
                {
                    string strType = disk["DriveType"].ToString();
                    switch (strType) //类型 
                    {
                        case "0":
                            //未知设备
                            break;
                        case "1":
                            //未分区
                            break;
                        case "2":
                            //可移动磁盘
                            driveNames.Add(disk["Name"].ToString());
                            break;
                        case "3":
                            //硬盘
                            break;
                        case "4":
                            //网络驱动器
                            break;
                        case "5":
                            //光驱"
                            break;
                        case "6":
                            //内存磁盘
                            break;
                    }
                }
                catch
                {
                    //item.SubItems.Add("设备未准备好");
                }
                
            }
            return driveNames;
        }