c#usb通讯编程

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1、C#的usb通讯编程usingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Drawing;usingSystem.Text;usingSystem.Windows.Forms;usingSystem.IO;namespaceU盘更新{    publicpartialclassForm1:Form    {        public const intWM_DEVICECHANGE=0x219;        public 

2、const intDBT_DEVICEARRIVAL=0x8000;        public const intDBT_CONFIGCHANGECANCELED=0x0019;        public const intDBT_CONFIGCHANGED=0x0018;        public const intDBT_CUSTOMEVENT=0x8006;        public const intDBT_DEVICEQUERYREMOVE=0x8001;        public const intDBT_DEVICEQUERYREMOVEFAIL

3、ED=0x8002;        public const intDBT_DEVICEREMOVECOMPLETE=0x8004;        public const intDBT_DEVICEREMOVEPENDING=0x8003;        public const intDBT_DEVICETYPESPECIFIC=0x8005;        public const intDBT_DEVNODES_CHANGED=0x0007;        public const intDBT_QUERYCHANGECONFIG=0x0017;        

4、public const intDBT_USERDEFINED=0xFFFF;        publicForm1()        {            InitializeComponent();        }        private voidForm1_Load(objectsender,EventArgse)        {        }        protected override voidWndProc(refMessagem)        {            try            {               

5、 if(m.Msg==WM_DEVICECHANGE)                {                    switch(m.WParam.ToInt32())                    {                        caseWM_DEVICECHANGE:                            break;                        caseDBT_DEVICEARRIVAL://U盘插入                            DriveInfo[]s=DriveI

6、nfo.GetDrives();                            foreach(DriveInfodriveins)                            {                                if(drive.DriveType==DriveType.Removable)                                {                                    listBox1.Items.Add("U盘已插入，盘符为:"+drive.Name.ToStr

7、ing());                                    break;                                }                            }                            break;                        caseDBT_CONFIGCHANGECANCELED:                            break;                        caseDBT_CONFIGCH