C#

private static Image ImagesToTiff(Image[] pages)
{
    try
    {
        EncoderParameters ep = new EncoderParameters(2);
        ep.Param[0] = new EncoderParameter(Encoder.SaveFlag, (long)EncoderValue.MultiFrame);
        ep.Param[1] = new EncoderParameter(Encoder.ColorDepth, (long)ColorDepth.Depth32Bit);
        MemoryStream ms = new MemoryStream();
        Bitmap Tiff = new Bitmap(pages[0]);
        Tiff.Save(ms, GetEncoder(ImageFormat.Tiff), ep);
        ep.Param[0] = new EncoderParameter(Encoder.SaveFlag, (long)EncoderValue.FrameDimensionPage);
        for (int i = 1; i < pages.Length; i++)
        {
            Tiff.SaveAdd(pages[i], ep);
            if (i == pages.Length - 1)
            {
                EncoderParameters epx = new EncoderParameters(2);
                epx.Param[0] = new EncoderParameter(Encoder.SaveFlag, (long)EncoderValue.Flush);
                epx.Param[1] = new EncoderParameter(Encoder.SaveFlag, (long)EncoderValue.LastFrame);
                Tiff.SaveAdd(epx);
            }
        }
        return Image.FromStream(ms);
    }
    catch (Exception)
    {
        throw;
    }
}

public static void DemoTheCode()
{
    Bitmap b = new Bitmap(100,100);
    Bitmap[] imgs = new Bitmap[2];
    Graphics g = Graphics.FromImage(b);
    g.FillRectangle(Brushes.Red,0,0,100,100);
    g.Save();
    imgs[0] = b;
    g.FillRectangle(Brushes.Blue,0,0,100,100);
    g.Save();
    imgs[1] = b;
    Image MyTiffOfTwoPages = ImagesToTiff(imgs);
    int Pages = MyTiffOfTwoPages.GetFrameCount(FrameDimension.Page); // this returns 2 as expected
    MyTiffOfTwoPages.Save(@"C:\Demo.Tiff", ImageFormat.Tiff); // But when i save the file, theres only one frame ???
}

With great code, comes great complexity, so keep it simple stupid...

compressorHnd = Avi.ICOpen(Avi.FOURCC.ICTYPE_VIDEO, Avi.FOURCC.DIVX, Avi.ICMODE.ICMODE_COMPRESS);

pCV = new Avi.COMPVARS();
pCV.cbSize = Marshal.SizeOf(pCV);
pCV.hic = compressorHnd;
pCV.dwFlags = 1;
pCV.fccHandler = Avi.FOURCC.DIVX;
pCV.fccType = Avi.FOURCC.ICTYPE_VIDEO;

outbi = new Avi.BITMAPINFOHEADER();
outbi.biSize = Marshal.SizeOf(outbi); // 40
outbi.biWidth = 640;
outbi.biHeight = 480;
outbi.biPlanes = 1;
outbi.biBitCount = 24;
outbi.biCompression = 0;

Avi.ICSeqCompressFrameStart(pCV, ref outbi);

bool key = false; long size = 0;

IntPtr r = (IntPtr)Avi.ICSeqCompressFrame(pCV, 0, image.ToArray(), ref key, ref size);

[DllImport("MSVFW32.dll")]
     public static extern int ICSeqCompressFrame(
         COMPVARS pc,
         int uiFlags,
         byte[] lpBits,
         ref bool pfKey,
         ref long plSize
         );

System.Net.Sockets.SocketException: An invalid argument was supplied
   at System.Net.Sockets.Socket.IOControl(Int32 ioControlCode, Byte[] optionInValue, Byte[] optionOutValue)
   at System.Net.Sockets.Socket.IOControl(IOControlCode ioControlCode, Byte[] optionInValue, Byte[] optionOutValue)

private void checkIP()
        {

            //mainSocket.Close();
            //   mainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
            mainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
            mainSocket.Bind(new IPEndPoint(IPAddress.Any,0));// Parse(strIP), 0));
            mainSocket.SetSocketOption(SocketOptionLevel.IP,          //Applies only to IP packets
                           SocketOptionName.HeaderIncluded, //Set the include the header
                           true);                           //option to true
            byte[] byTrue = new byte[4] { 1, 0, 0, 0 };
            byte[] byOut = new byte[4] { 1, 0, 0, 0 }; //Capture outgoing packets
          mainSocket.IOControl(IOControlCode.ReceiveAll,              //Equivalent to SIO_RCVALL constant//of Winsock 2
                   byTrue,
                   byOut);
                
            mainSocket.BeginReceive(byteData, 0, byteData.Length, SocketFlags.None, new AsyncCallback(OnReceive), null);
            timer1Sec.Enabled = true;
        }  
 private void OnReceive(IAsyncResult ar)
        {
            try
            {
                int nReceived = mainSocket.EndReceive(ar);

                //Analyze the bytes received...

                ParseData(byteData, nReceived);

            }

            catch (Exception ex)
            {
                //   MessageBox.Show(ex.Message, "MJsniffer", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

public enum Color
    {
     Any,
     D+, 
     D, 
     D-, 
     E+ 
    };