Can I use PDFNet to view multi-page TIFF or to convert multi-page TIF to PDF?


Does PDFNet SDK support opening a multi-page TIF and converting to
PDF? I ran the PDFView sample project and the viewer only displayed
the initial TIF page.

- Can multi-page TIFs be opened by the viewer?
- Can multi-page TIFs be programmatically converted to PDF?

You can use PDFNet SDK both for viewing multi-page TIFF and for
programmatic conversion of multi-page TIFF to PDF.

PDFView (C# or VB.NET) sample project (
samplecode.html#PDFView) is using OpenImage utility method (in
PDFViewForm.cs) to convert and TIF, JPEG, PNG, and other image formats
to PDF. Currently the sample code imports only the first frame from
the multi-page TIFF however you could extend the functionality using
standard .NET API used to read multi-page TIFF.

For example of how to extract frames from multi-page TIFF you may want
to search for SelectActiveFrame() in MSDN. Also you may find the
following article useful:

// Opens a TIFF image and extracts the frames
private void DoOpen(string tif_filename) {
  FileStream fs=File.Open(filename,FileMode.Open,FileAccess.Read);
  Bitmap bm=(Bitmap)Bitmap.FromStream(fs);
  for(int i=0; i<bm.GetFrameCount(FrameDimension.Page); i++) {
    bm.SelectActiveFrame(FrameDimension.Page, i);
    Bitmap temp=new Bitmap(bm.Width,bm.Height);
    Graphics g=Graphics.FromImage(temp);
    ... AddFrameToPDF(temp);