// Create an instance of Parser class
using (Parser parser = new Parser(Constants.SampleImageWithBarcodes))
{
    // Check if the file supports barcodes extraction
    if (!parser.Features.Barcodes)
    {
        Console.WriteLine("File doesn't support barcodes extraction.");
        return;
    }

    // Extract barcodes from the image.
    IEnumerable<PageBarcodeArea> barcodes = parser.GetBarcodes();

    // Iterate over barcodes
    foreach (PageBarcodeArea barcode in barcodes)
    {
        // Print the page index
        Console.WriteLine("Page: " + barcode.Page.Index.ToString());
        // Print the barcode value
        Console.WriteLine("Value: " + barcode.Value);
    }
}

// Define a barcode field
TemplateBarcode barcode = new TemplateBarcode(
    new Rectangle(new Point(590, 80), new Size(150, 150)),
    "QR");

// Create a template
Template template = new Template(new TemplateItem[] { barcode });

// Create an instance of Parser class
using (Parser parser = new Parser(Constants.SamplePdfWithBarcodes))
{
    // Parse the document by the template
    DocumentData data = parser.ParseByTemplate(template);

    // Print all extracted data
    for (int i = 0; i < data.Count; i++)
    {
        Console.Write(data[i].Name + ": ");
        PageBarcodeArea area = data[i].PageArea as PageBarcodeArea;
        Console.WriteLine(area == null ? "Not a template barcode field" : area.Value);
    }
}

// Create an instance of Parser class
using (Parser parser = new Parser(filePath))
{
    // Extract images
    IEnumerable<PageImageArea> images = parser.GetImages();
    // Check if images extraction is supported
    if (images == null)
    {
        Console.WriteLine("Images extraction isn't supported");
        return;
    }
    // Iterate over images
    foreach (PageImageArea image in images)
    {
        // Print a page index, rectangle and image type:
        Console.WriteLine(string.Format("Page: {0}, R: {1}, Type: {2}", image.Page.Index, image.Rectangle, image.FileType));
    }
}

// Get a file info
Options.FileInfo info = Parser.GetFileInfo(filePath, new LoadOptions("password"));
// Check IsEncrypted property
Console.WriteLine(info.IsEncrypted ? "Password is required" : "");
// Print the file type
Console.WriteLine(info.FileType.ToString());