C# How to get text from PDF file with iTextSharp

pdf-text-extraction.cs

// source is a byte array
using (var reader = new PdfReader(source))
  {
      using (var output = new StringWriter())
      {
          for (int i = 1; i <= reader.NumberOfPages; i++)
          {
              output.WriteLine(PdfTextExtractor.GetTextFromPage(reader, i));
          }

          return output.ToString();
      }
  }