Reading PDF documents using Itextsharp

There are many ways to get the PDF page method has read the flow judgment type/page but after the actual test file is too large often is not very accurate, since so we do not have to bother to write their own can be used itextsharp.

Here is: http://sourceforge.net/projects/itextsharp/files/

(1) Create a Windows console application named Readpdfdemo.
(2) Add a reference to the Itextsharp.
(3) Add the following reference in the "Program.cs" file.
Using System;
Using System.IO;
Using Itextsharp.text;
Using ITextSharp.text.pdf;
(4) The code to directly modify the "Program.cs" file is as follows.
Namespace Readpdfdemo
{
Class Program
{
static void Main (string[] args)
{
Console.WriteLine ("Read PDF document");
Try
{
Create a Pdfreader object
Pdfreader reader = new Pdfreader (@ "C:\origin.pdf");
Get document Pages
int n = reader. Numberofpages;
Get the size of the first page
Rectangle psize = reader. GetPageSize (1);
Float width = psize. Width;
float height = psize. Height;
Create a document variable
Document document = new Document (Psize, 50, 50, 50, 50);
Create the document
PDFWriter writer = pdfwriter.getinstance (document, New FileStream (@ "C:\Read.pdf", FileMode.Create));
Open Document
Document. Open ();
Add content
Pdfcontentbyte cb = writer. Directcontent;
int i = 0;
int p = 0;
Console.WriteLine ("A total of" + N + "pages.");
while (I < n)
{
Document. NewPage ();
p++;
i++;
Pdfimportedpage Page1 = writer. Getimportedpage (reader, i);
Cb. Addtemplate (Page1,. 5f, 0, 0,. 5f, 0, HEIGHT/2);
Console.WriteLine ("Process" + i + "page");
if (I < n)
{
i++;
Pdfimportedpage Page2 = writer. Getimportedpage (reader, i);
Cb. Addtemplate (Page2,. 5f, 0, 0,. 5f, WIDTH/2, HEIGHT/2);
Console.WriteLine ("Process" + i + "page");
}
if (I < n)
{
i++;
Pdfimportedpage Page3 = writer. Getimportedpage (reader, i);
Cb. Addtemplate (Page3,. 5f, 0, 0,. 5f, 0, 0);
Console.WriteLine ("Process" + i + "page");
}
if (I < n)
{
i++;
Pdfimportedpage Page4 = writer. Getimportedpage (reader, i);
Cb. Addtemplate (Page4,. 5f, 0, 0,. 5f, WIDTH/2, 0);
Console.WriteLine ("Process" + i + "page");
}
Cb. Setrgbcolorstroke (255, 0, 0);
Cb. MoveTo (0, HEIGHT/2);
Cb. LineTo (width, HEIGHT/2);
Cb. Stroke ();
Cb. MoveTo (WIDTH/2, height);
Cb. LineTo (WIDTH/2, 0);
Cb. Stroke ();
Basefont bf = Basefont.createfont (Basefont.helvetica, basefont.cp1252, basefont.not_embedded);
Cb. Begintext ();
Cb. Setfontandsize (BF, 14);
Cb. Showtextaligned (Pdfcontentbyte.align_center, "page" + P + "of" + ((N/4) + (n% 4 > 0?) 1:0)), WIDTH/2, 40, 0);
Cb. Endtext ();
}
Close Document
Document. Close ();
}
catch (Exception de)
{
Console.Error.WriteLine (DE. Message);
Console.Error.WriteLine (DE. StackTrace);
}
}
}
}

Reading PDF documents using Itextsharp