Question

I need to disable cdrom and the usb mass storage drivers using c# windows service. i have noticed there is a post Disable the use of CD drive (VB.NET) but it keeps ejecting the cdrom tray. does anyone know how to disable the cd rom other than using this method.????

Answer 1

I Have fund a solution

#region EjectMedia
        const uint GENERICREAD = 0x80000000;
        const uint OPENEXISTING = 3;
        const uint IOCTL_STORAGE_EJECT_MEDIA = 2967560;
        const int INVALID_HANDLE = -1;

        private static IntPtr fileHandle;
        private static uint returnedBytes;

        [DllImport("kernel32", SetLastError = true)]
        static extern IntPtr CreateFile(string fileName,
        uint desiredAccess,
        uint shareMode,
        IntPtr attributes,
        uint creationDisposition,
        uint flagsAndAttributes,
        IntPtr templateFile);
        [DllImport("kernel32", SetLastError = true)]
        static extern int CloseHandle(IntPtr driveHandle);
        [DllImport("kernel32", SetLastError = true)]
        static extern bool DeviceIoControl(IntPtr driveHandle,
        uint IoControlCode,
        IntPtr lpInBuffer,
        uint inBufferSize,
        IntPtr lpOutBuffer,
        uint outBufferSize,
        ref uint lpBytesReturned,
                 IntPtr lpOverlapped);
        #endregion

private void loop(object sender, EventArgs e)
{
 DriveInfo[] allDrives = DriveInfo.GetDrives();
            foreach (DriveInfo d in allDrives)
            {
                if (d.IsReady)
                {
                    if (d.DriveType == DriveType.Removable || d.DriveType == DriveType.Ram || d.DriveType == DriveType.Unknown) 
                        Eject(@"\\.\" + d.Name.Substring(0, 1) + ":");
                }
            }
}

 public void Eject(string driveLetter)
        {
            try
            {
                fileHandle = CreateFile(driveLetter, GENERICREAD, 0, IntPtr.Zero, OPENEXISTING, 0, IntPtr.Zero);
                if ((int)fileHandle != INVALID_HANDLE)
                    DeviceIoControl(fileHandle, IOCTL_STORAGE_EJECT_MEDIA, IntPtr.Zero, 0, IntPtr.Zero, 0, ref returnedBytes, IntPtr.Zero);
            }

            catch
            {
                EventLog.WriteEntry(Marshal.GetLastWin32Error().ToString());
            }

            finally
            {
                CloseHandle(fileHandle);
                fileHandle = IntPtr.Zero;
            }
        }