using System.Diagnostics;
using System.Drawing;
using Bytescout.PDFExtractor;

namespace ExtractText
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create Bytescout.PDFExtractor.TextExtractor instance
            TextExtractor extractor = new TextExtractor();
            extractor.RegistrationName = "demo";
            extractor.RegistrationKey = "demo";

            // Load sample PDF document
            extractor.LoadDocumentFromFile(@".\DocumentWithWatermark.pdf");

            // Filter text using text filter
            extractor.AddFilter(@"^COPY$", caseSensitive: true, useRegex: true);

            // Filter text using appearance filter
            // extractor.AddFilter("Arial", fontSize: 203, exclude: true);

            // Save extracted text to file
            extractor.SaveTextToFile(@".\result.txt");

            // Cleanup
            extractor.Dispose();

            // Open result file in default associated application
            ProcessStartInfo processStartInfo = new ProcessStartInfo(@".\result.txt");
            processStartInfo.UseShellExecute = true;
            Process.Start(processStartInfo);
        }
    }
}