如何在没有第三方组件的情况下将多个PDF组合成一个PDF?
I don't think you can. Opensource component PDFSharp has that functionality, and a nice source code sample on file combining
The .NET Framework does not contain the ability to modify/create PDFs. You need a 3rd party component to accomplish what you are looking for.
As others have said, there is nothing built in to do that task. Use iTextSharp with this example code .
AFAIK C# has no built-in support for handling PDF so what you are asking can not be done without using a 3rd party component or a COTS library.
Regarding libraries there is a myriad of possibilities. Just to point a few:
http://csharp-source.net/open-source/pdf-libraries
http://www.codeproject.com/KB/graphics/giospdfnetlibrary.aspx
I don't think .NET Framework contains such like libraries. I used iTextsharp with c# to combine pdf files. I think iTextsharp is easyest way to do this. Here is the code I used.
string[] lstFiles=new string[3];
lstFiles[0]=@"C:/pdf/1.pdf";
lstFiles[1]=@"C:/pdf/2.pdf";
lstFiles[2]=@"C:/pdf/3.pdf";
PdfReader reader = null;
Document sourceDocument = null;
PdfCopy pdfCopyProvider = null;
PdfImportedPage importedPage;
string outputPdfPath=@"C:/pdf/new.pdf";
sourceDocument = new Document();
pdfCopyProvider = new PdfCopy(sourceDocument, new System.IO.FileStream(outputPdfPath, System.IO.FileMode.Create));
//Open the output file
sourceDocument.Open();
try
{
//Loop through the files list
for (int f = 0; f < lstFiles.Length-1; f++)
{
int pages =get_pageCcount(lstFiles[f]);
reader = new PdfReader(lstFiles[f]);
//Add pages of current file
for (int i = 1; i <= pages; i++)
{
importedPage = pdfCopyProvider.GetImportedPage(reader, i);
pdfCopyProvider.AddPage(importedPage);
}
reader.Close();
}
//At the end save the output file
sourceDocument.Close();
}
catch (Exception ex)
{
throw ex;
}
private int get_pageCcount(string file)
{
using (StreamReader sr = new StreamReader(File.OpenRead(file)))
{
Regex regex = new Regex(@"/Type\s*/Page[^s]");
MatchCollection matches = regex.Matches(sr.ReadToEnd());
return matches.Count;
}
}
Although it has already been said, you can't manipulate PDFs with the built-in libraries of the .NET Framework. I can however recommend iTextSharp , which is a .NET port of the Java iText. I have played around with it, and found it to be a very easy tool to use.
ITextSharp是要走的路
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.