c#中windows Ce 6.0上usb的序列号

Question

我需要获取连接到 Windows ce 6.0 设备的 USB 记忆棒的序列号。我试过KernelIoControl，我得到了window ce 6.0设备的序列号，但没有连接到它的usb。

    private static string GetDeviceID()
    {
        // Initialize the output buffer to the size of a  
        // Win32 DEVICE_ID structure. 
        byte[] outbuff = new byte[20];
        Int32 dwOutBytes;
        bool done = false;

        Int32 nBuffSize = outbuff.Length;

        // Set DEVICEID.dwSize to size of buffer.  Some platforms look at 
        // this field rather than the nOutBufSize param of KernelIoControl 
        // when determining if the buffer is large enough.
        BitConverter.GetBytes(nBuffSize).CopyTo(outbuff, 0);
        dwOutBytes = 0;

        // Loop until the device ID is retrieved or an error occurs. 
        while (!done)
        {
            if (KernelIoControl(IOCTL_HAL_GET_DEVICEID, IntPtr.Zero,
                0, outbuff, nBuffSize, ref dwOutBytes))
            {
                done = true;
            }
            else
            {
                int error = Marshal.GetLastWin32Error();
                switch (error)
                {
                    case ERROR_NOT_SUPPORTED:
                        throw new NotSupportedException(
                            "IOCTL_HAL_GET_DEVICEID is not supported on this device",
                            new Win32Exception(error));

                    case ERROR_INSUFFICIENT_BUFFER:

                        // The buffer is not big enough for the data.  The 
                        // required size is in the first 4 bytes of the output 
                        // buffer (DEVICE_ID.dwSize).
                        nBuffSize = BitConverter.ToInt32(outbuff, 0);
                        outbuff = new byte[nBuffSize];

                        // Set DEVICEID.dwSize to size of buffer.  Some 
                        // platforms look at this field rather than the 
                        // nOutBufSize param of KernelIoControl when 
                        // determining if the buffer is large enough.
                        BitConverter.GetBytes(nBuffSize).CopyTo(outbuff, 0);
                        break;

                    default:
                        throw new Win32Exception(error, "Unexpected error");
                }
            }
        }

当我将 USB 记忆棒连接到 windows ce 6 设备时，它显示了一个新的硬盘识别，我需要进入这个新设备注册的属性，控制我的 windows ce 6 上可用的 USB 端口设备。

Answer 1

您可能正在寻找的是USB_DEVICE_DESCRIPTOR。在大窗口中，您将使用 SetupDiGetDeviceProperty 来获取此信息，但在 CE 中，此值仅对驱动程序可用。我认为没有一种通用的方法可以从 CE 中的驱动程序中获取此信息。不过，您的驱动程序可能包含一个特殊的 IOCTL_ 来获取该信息。联系您的 OEM。