[英]Merge pdfs with NReco PdfGenerator
In the features section on NReco's site, in the examples list: there is a line about MergePdf. 在NReco网站的功能部分中,在示例列表中:关于MergePdf的一行。 I have looked in the API-reference and using the intellisense in visualstudio but I can't find anything.
我已经查看了API参考,并在visualstudio中使用了智能感知功能,但找不到任何东西。
I wan't to merge several pdf's before I sent them in a mail. 在通过邮件发送之前,我不会合并几个pdf。 The Pdf's is generated with nreco wkhtmltopdf with different headers and footers which I could not get to work in the same generate so I splitted the generation and now I want to merge the pdf's again.
Pdf是使用nreco wkhtmltopdf生成的,具有不同的页眉和页脚,而我无法在同一生成中使用它,因此我拆分了一代,现在我想再次合并pdf。 Or do I have to get yet another library involved.
还是我必须让另一个图书馆参与进来。
Just sharing what I ended up with. 只是分享我最终得到的。 At least for now.
至少现在(是。 It is a modification of the suggested solution with iTextSharp.
它是对iTextSharp建议解决方案的修改。
public static byte[] MergePdfs(IEnumerable<byte[]> pdfs)
{
using (var memoryStream = new MemoryStream())
{
var document = new Document(PageSize.A4);
var writer = PdfWriter.GetInstance(document, memoryStream);
document.Open();
var writerDirectContent = writer.DirectContent;
foreach (var pdf in pdfs)
{
var pdfReader = new PdfReader(pdf);
var numberOfPages = pdfReader.NumberOfPages;
for (var currentPageNumber = 1; currentPageNumber <= numberOfPages; currentPageNumber++)
{
document.SetPageSize(PageSize.A4);
document.NewPage();
var page = writer.GetImportedPage(pdfReader, currentPageNumber);
writerDirectContent.AddTemplate(page, 1f, 0, 0, 1f, 0, 0);
}
}
document.Close();
return memoryStream.ToArray();
}
}
There are 2 ways how you can achieve the goal you mentioned: 有两种方法可以实现您提到的目标:
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