How to open a multi-frame TIFF imageformat image in .NET 2.0?

Question

Image.FromFile(@\"path\\filename.tif\")

or

Image.FromStream(memoryStream)

both produce image objects with only on

Answer 1

bitmap.Dispose();

After For loop you need to Dispose bitmap. Otherwise you get error "file using other process" when try to use same file in other process.

Answer 2

Here's what I use:

private List<Image> GetAllPages(string file)
{
    List<Image> images = new List<Image>();
    Bitmap bitmap = (Bitmap)Image.FromFile(file);
    int count = bitmap.GetFrameCount(FrameDimension.Page);
    for (int idx = 0; idx < count; idx++)
    {
        // save each frame to a bytestream
        bitmap.SelectActiveFrame(FrameDimension.Page, idx);
        MemoryStream byteStream = new MemoryStream();
        bitmap.Save(byteStream, ImageFormat.Tiff);

        // and then create a new Image from it
        images.Add(Image.FromStream(byteStream));
    }
    return images;
}

Answer 3

I was able to handle the multi-frame tiff by using the below method.

Image multiImage = Image.FromFile(sourceFile);

multiImage.Save(destinationFile, tiff, prams);

int pageCount = multiImage.GetFrameCount(FrameDimension.Page);

for (int page = 1; page < pageCount; page++ )
{
    multiImage.SelectActiveFrame(FrameDimension.Page,page);
    multiImage.SaveAdd(dupImage,prams);
}

multiImage.SaveAdd(newPage, prams);
multiImage.Dispose(); 

I have not tried the solution in .net 2.0 but MSDN shows the class members to exist. It did fix my problem in .net 4.5.2.