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• • Introduction Hello everybody! This is my first article here. It's nothing fancy, but it can save a lot of trouble if you need to include a simple image ->PDF convertor in your.NET application. Please forgive any spelling or grammar mistakes which may follow. Background Some time ago I needed a TIFF to PDF converter.

I found this article called, which is written in Visual C++ 6 and uses the library, as well as. As that article says, it only suppots TIFF Image files in Fax formats, whatever that means.

I haven't looked in depth, but probably that's the reason why, during my testing, out of these, only 11 were converted to something that Adobe Reader could understand. They contain scanned text (from books and handwritten), technical drawings and pictures, so I suppose they cover a wide range of sub-formats. So after the few minutes of joy during which I thought I had found the perfect solution, I was back to to look for something else. Luckily I found the wonderful freeware Open Source library called, which saved the day. Using the Code The purpose of the PDFSharp libray is to create PDF files from scratch as easy as possible. The methods it exposes are symilar to the GDI+ ones in.NET. So you can imagine that writing a PDF file is like drawing 'stuff' (text, shapes, images) in the Paint event of a Windows Forms Panel.

With that knowledge, converting a BMP/PNG/GIF/JPEG/TIFF file to a PDF one is done like this: • create a new empty PDF document • add a blank page • get the XGraphics object • create the XImage from the source file • draw the image • save the PDF file The core of the program is listed below. I used a BackgroundWorker, so that the UI will not hang during the conversion. PdfDocument doc = new PdfDocument(); doc.Pages.Add( new PdfPage()); XGraphics xgr = XGraphics.FromPdfPage(doc.Pages[0]); XImage img = XImage.FromFile(source); xgr.DrawImage(img, 0, 0); doc.Save(destinaton); doc. Vhdl Code For Serial Adder Using Finite State Machine. Close(); Conclusion Creating PDF files from images is very easy with PDFSharp. For TIFF images, the downside is that the speed is significantly lower compared with the method described in the article.

I don't have rigorous data, but as an estimation, converting a large image (2.5 MB) takes around 2 seconds. The other method is about 10 times faster, but again it only supports some TIFF files. The performance is not that bad, but if you want to use this code to process multiple files in an application, be sure to do it asyncronously with th UI. Note: In the download archives I included the PDFSharp library. If you want the latest version, be sure to visit. History 14 Aug 2008 - first submission of the article. Joshd06 26-Mar-12 4:17 26-Mar-12 4:17 Very useful post.

I like how it shows in simple code what PDFSharp can do. I also liked the added touch of using a worker thread, which can be handy for someone not familiar with multithreading.

I was in the same position some time ago and tried PDFSharp and liked it, but it only supported the image formats that came with.NET. My legacy database contained a mix of other image formats so I ended up using leadtools. It's not free, but it did solve my formats requirement. Member 3196720 8-Jun-11 4:33 8-Jun-11 4:33 Hi, Your tool is great but I need to process some very large multi-page TIFFs into PDFs. I saw the code sample you had posted that replaced single-page processing with multi-page processing, and it works like a charm for small files.

However, if I try to process a large one, I get an out of memory exception, probably because it tries to load every page from the source before converting. Do you know if it's possible to modify your code further to load one page at a time, convert it, save it and then clean up as much memory as possible before loading the next page?