C# 获取USB磁盘信息

来源：互联网发布：keep软件的用法编辑：程序博客网时间：2024/06/14 07:46

USB设备插入USB接口之后，windows产生设备消息，发往每一个window消息队列，可以从WndProc中获得USB插入或移除消息：

protected override void  WndProc(ref Message sysm)        {            const int WM_DEVICECHANGE = 0x219;            const int DBT_DEVICEARRIVAL = 0x8000;             try            {                if(sysm.Msg==WM_DEVICECHANGE)                    if (sysm.WParam.ToInt32() == DBT_DEVICEARRIVAL)                    {                        string[] dirs = Environment.GetLogicalDrives(); //取得所有的盘符                        foreach (string dir in dirs)                        {                            DriveInfo Tdriver=new DriveInfo(dir);                            if(Tdriver.DriveType==DriveType.Removable){                            {                                while (Tdriver.IsReady == false) {                                    Thread.Sleep(500);                                }                                try                                {                                    string PSTR = "";                                    PSTR += "磁盘名称：" + Tdriver.Name + "\r\n";                                    PSTR += "磁盘卷标：" + Tdriver.VolumeLabel + "\r\n";                                    PSTR += "文件系统：" + Tdriver.DriveFormat + "\r\n";                                    PSTR += "剩余大小：" + Tdriver.AvailableFreeSpace.ToString() + "\r\n";                                    PSTR += "总体容量：" + Tdriver.TotalSize.ToString() + "\r\n";                                    MessageBox.Show(PSTR);                                }                                catch {                                    MessageBox.Show("error");                                }                             }                        }                     }                 }             }            catch            { }            base.WndProc(ref    sysm);

通过对dirs的的检测，可以发现哪些是USB盘，用USBPhysic.dll可以读取到USB设备的物理信息：

[DllImport("USBPhysic")]  public static extern int Init(string sUser, string sRegCode); [DllImport("USBPhysic")]  public static extern int GetUSBPhysicInfo(int diskIndex, int InfoType, StringBuilder pHddInfo);

以上是引用USBPhysic.dll中的两个方法，当然Init方法用来注册USBPhysic.dll，之后可以读取到设备信息：

private void Form1_Load(object sender, EventArgs e)        {            string Pstr = "";            StringBuilder T = new StringBuilder();            int A = Init("Mndsoft.com", "C88C-7F7A-725B");            Pstr += "磁盘总数：" + A.ToString() + "\r\n";            A = GetUSBPhysicInfo(0, 0, T);            Pstr += "磁盘串号：" + T.ToString() + "\r\n";            A = GetUSBPhysicInfo(0, 1, T);            Pstr += "磁盘名称：" + T.ToString() + "\r\n";            A = GetUSBPhysicInfo(0, 2, T);            Pstr += "磁盘厂商：" + T.ToString() + "\r\n";            MessageBox.Show(Pstr);        }

上面默认读取0号磁盘信息，对于一个示例U盘，返回如下：