pdfbox is used to implement the pdf text extraction and merge function example

Sometimes we need to do some processing on PDF files, extract text, merge, etc. We used to use the A-ES3en Text Extractor free tool, so why not write one yourself?
Now we can use the open source library PDFBox-0.7.3.

PDFBox-0.7.3.dll
IKVM.GNU.Classpath.dll

Create a new project. The code is simple:

public static string ParseToTxtStringUsingPDFBox(string filename){
PDDocument doc = PDDocument.load(filename);
PDFTextStripper stripper = new PDFTextStripper();
return stripper.getText(doc);
}

Get the textString and write it as a disk file, like this:

public static void WriteToTextFile(string str,string txtpath)
{
if (string.IsNullOrEmpty(txtpath))
throw new ArgumentNullException("Output file path should not be Null");
using (var txtWriter = new StreamWriter(txtpath))
{
txtWriter.Write(str);
txtWriter.Close();
}
}

You are free to do the rest. This library currently supports:

PDF to text extraction
Merge PDF Documents
PDF Document Encryption/Decryption
Lucene Search Engine Integration
Fill in form data FDF and XFDF
Create a PDF from a text file
Create images from PDF pages
Print a PDF