通过C#弹出USB设备

[DllImport("kernel32.dll")]

private static extern bool CreateFile(string lpFileName, uint dwDesiredAccess, uint dwShareMode, IntPtr lpSecurityAttributes, uint dwCreationDisposition, uint dwFlagsAndAttributes, IntPtr hTemplateFile);

[DllImport("kernel32.dll")]

private static extern bool DeviceIoControl(IntPtr hDevice, uint dwIoControlCode, IntPtr lpInBuffer, uint nInBufferSize, IntPtr lpOutBuffer, uint nOutBufferSize, ref uint lpBytesReturned, IntPtr lpOverlapped);

[Flags]

private enum FileAccess : uint

{

    Read = 0x80000000,

    Write = 0x40000000,

    Append = 0x20000000,

    ReadWrite = Read | Write,

    WriteWrite = Write | Write

}

private enum FileShare : uint

{

    Read = 0x00000001,

    Write = 0x00000002,

    Delete = 0x00000004

}

private enum CreationDisposition : uint

{

    New = 0x00000000,

    Open = 0x00000001,

    OpenOrCreate = 0x00000002,

    Create = 0x00000003

}

private enum FileAttributes : uint

{

    Hidden = 0x00000002,

    System = 0x00000010,

    Directory = 0x00000001

}

private enum IoControlCode : uint

{

    IOCTL_DISK_GET_DRIVE_GEOMETRY = 0x00000070,

    IOCTL_DISK_GET_PARTITION_INFO = 0x0000000A,

    IOCTL_DISK_SET_PARTITION_INFO = 0x0000000B,

    IOCTL_DISK_DELETE_PARTITION = 0x00000009,

    IOCTL_DISK_FORMAT_PARTITION = 0x0000000C,

    IOCTL_DISK_GET_ATTRIBUTES = 0x00000019,

    IOCTL_DISK_SET_ATTRIBUTES = 0x0000001A,

    IOCTL_DISK_DELETE_FILE = 0x00000022,

    IOCTL_DISK_FILE_SET_POSITION = 0x00000029,

    IOCTL_DISK_FILE_GET_POSITION = 0x0000002A,

    IOCTL_DISK_CONTROL_VERIFY = 0x0000002B,

    IOCTL_DISK_CONTROL_READ_SECTORS = 0x0000002C,

    IOCTL_DISK_CONTROL_WRITE_SECTORS = 0x0000002E,

    IOCTL_DISK_CONTROL_ERASE_SECTOR = 0x0000002F,

    IOCTL_DISK_CONTROL_WRITE_BUFFER = 0x00000030,

    IOCTL_DISK_CONTROL_READ_BUFFER = 0x00000031,

    IOCTL_DISK_CONTROL_FLUSH = 0x00000032,

    IOCTL_DISK_CONTROL_RESET = 0x00000033,

    IOCTL_DISK_CONTROL_GET_CACHE_INFORMATION = 0x00000034,

    IOCTL_DISK_CONTROL_SET_CACHE_INFORMATION = 0x00000035,

    IOCTL_DISK_CONTROL_GET_POSITION = 0x000