【C#】两种方式实现给PDF文件加水印，源码分享

iTextSharp consists of several dlls. The main iTextSharp release contains: - itextsharp.dll: the core library - itextsharp.xtra.dll: extra functionality (PDF 2!) - itextsharp.pdfa.dll: PDF/A-related functionality This project is hosted on http://sourceforge.net/projects/itextsharp/ You can find the latest release here: http://sourceforge.net/projects/itextsharp/files/itextsharp/ In some cases, you'll need extra dlls. These dlls are available here: http://sourceforge.net/projects/itextsharp/files/extras/ For XML (and HTML) functionality, you need this dll: - itextsharp.xmlworker.dll This is available on http://sourceforge.net/projects/itextsharp/files/xmlworker/ Finally, we also have a Java tool that can help you debug PDFs: - itext-rups-x.y.z.jar This project is hosted on http://sourceforge.net/projects/itextrups/ iTextSharp is licensed as AGPL software. AGPL is a free / open source software license. This doesn't mean the software is gratis! Buying a license is mandatory as soon as you develop commercial activities distributing the iTextSharp software inside your product or deploying it on a network without disclosing the source code of your own applications under the AGPL license. These activities include: offering paid services to customers as an ASP, serving PDFs on the fly in the cloud or in a web application, shipping iTextSharp with a closed source product. Contact sales for more info: http://itextpdf.com/sales