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C#实现usb通讯编程代码如下：

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.IO;



namespace U盘更新

{

    public partial class Form1 : Form

    {

        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;



        public Form1()

        {

            InitializeComponent();

        }



        private void Form1_Load(object sender, EventArgs e)

        {



        }



        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)

                                {

                                    listBox1.Items.Add(

                                       "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

 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);

        }

    }

}