打印多个PDF文件而不显示打印机对话框

Question

我想在Web应用程序ASP.Net + C＃中创建一个方法作为输入参数PDF文件路径，然后打印所有它而不显示选择打印机对话框，因此它使用默认打印机打印。

Answer 1

The best you can do is concatenate the PDF files into one file and then print it, showing the printer dialog once at the beginning of the process. There are many commercial .NET PDF libraries that have this functionality.

Disclaimer: I work at Atalasoft. Here the code for doing it with DotImage

PdfDocument.Combine("Output.pdf", "doc1.pdf", "doc2.pdf", "doc3.pdf");

http://www.atalasoft.com/products/dotimage/white-papers/building-pdf-documents-with-dotimage

Answer 2

A web application cannot silently print to a client's printer. This will be a violation of the browser security model. Browsers and PDF browser plugins have to show a dialog box and prompt the user to allow printing.