xps转换为pdf

https://www.cnblogs.com/zeoy/archive/2013/01/09/2852941.html

https://blog.csdn.net/jafucong/article/details/78980276

PdfDocument doc = new PdfDocument();
doc.LoadFromFile(xpsFile,FileFormat.XPS);
doc.SaveToFile(pdfFile, FileFormat.PDF);