I am looking for a free open source .Net based, preferably C#, pdf printer such as CutePDF's Custom PDF Writer with programmatic access that will allow me to save a xps document to a pdf format. I have found many alternatives that are capable of converting xps documents to pdf formats, but they are not open source. I was curious to know if anyone is aware of an open source library that will allow me to accomplish this.
For any of you out there attempting to convert XPS to PDF using an open source means, I was able to successfully do so using PDFSharp version 1.31. It successfully upgraded to .NET 4.5 and I included the PdfSharp.Xps project into my solution. Once you include all the references, you only need a single line to link to your XPS file.
XpsConverter.Convert("D:\\Example\\test.xps");
Note: There are also other constructors available but I used the most simplistic one in my example.
Hope this helps!
来源：https://stackoverflow.com/questions/14162392/programmatically-print-to-a-pdf-printer