How to extract info from PDF in ASP.NET, C# and VB.NET using PDF Extractor SDK

With PDF Extractor SDK you can extract pdf document info such as Author, Creator, Producer, Subject, Title, Creation Date, Keywords, Bookmarks and Encrypted info. These sample source codes can be used to extract info from PDF in ASP.NET, C#, and VB.NET.

Also, check the following tutorial: How to extract attachments from PDF.

Select your programming language:

• ASP.NET
• C#
• Visual Basic .NET

How to extract info from PDF in ASP.NET

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.IO;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Bytescout.PDFExtractor;

namespace ExtractInfo
{
	public partial class _Default : System.Web.UI.Page
	{
		protected void Page_Load(object sender, EventArgs e)
		{
			// This test file will be copied to the project directory on the pre-build event (see the project properties).
			String inputFile = Server.MapPath("sample1.pdf");

			// Create Bytescout.PDFExtractor.InfoExtractor instance
			InfoExtractor extractor = new InfoExtractor();
			extractor.RegistrationName = "demo";
			extractor.RegistrationKey = "demo";
			
			// Load sample PDF document
			extractor.LoadDocumentFromFile(inputFile);

			Response.Clear();
			Response.ContentType = "text/html";

			Response.Write("Author: " + extractor.Author + "
");
			Response.Write("Creator: " + extractor.Creator + "
");
			Response.Write("Producer: " + extractor.Producer + "
");
			Response.Write("Subject: " + extractor.Subject + "
");
			Response.Write("Title: " + extractor.Title + "
");
			Response.Write("CreationDate: " + extractor.CreationDate + "
");
			Response.Write("Keywords: " + extractor.Keywords + "
");
			Response.Write("Bookmarks: " + extractor.Bookmarks + "
");
			Response.Write("Encrypted: " + extractor.Encrypted + "
");

			Response.End();
		}
	}
}

How to extract info from PDF in C#

using System;
using Bytescout.PDFExtractor;

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

			// Load sample PDF document
			extractor.LoadDocumentFromFile("sample1.pdf");

			Console.WriteLine("Author:       " + extractor.Author);
			Console.WriteLine("Creator:      " + extractor.Creator);
			Console.WriteLine("Producer:     " + extractor.Producer);
			Console.WriteLine("Subject:      " + extractor.Subject);
			Console.WriteLine("Title:        " + extractor.Title);
			Console.WriteLine("CreationDate: " + extractor.CreationDate);
			Console.WriteLine("Keywords:     " + extractor.Keywords);
			Console.WriteLine("Bookmarks:    " + extractor.Bookmarks);
			Console.WriteLine("Encrypted:    " + extractor.Encrypted);
			
			Console.WriteLine();
			Console.WriteLine("Press any key to continue...");
			Console.ReadLine();
		}
	}
}

How to extract info from PDF in Visual Basic .NET

Imports Bytescout.PDFExtractor

Class Program
	Friend Shared Sub Main(args As String())

        ' Create Bytescout.PDFExtractor.InfoExtractor instance
        Dim extractor As New InfoExtractor()
		extractor.RegistrationName = "demo"
		extractor.RegistrationKey = "demo"

		' Load sample PDF document
        extractor.LoadDocumentFromFile("sample1.pdf")

        Console.WriteLine("Author:       " + extractor.Author)
        Console.WriteLine("Creator:      " + extractor.Creator)
        Console.WriteLine("Producer:     " + extractor.Producer)
        Console.WriteLine("Subject:      " + extractor.Subject)
        Console.WriteLine("Title:        " + extractor.Title)
        Console.WriteLine("CreationDate: " + extractor.CreationDate)
        Console.WriteLine("Keywords:     " + extractor.Keywords)
        Console.WriteLine("Bookmarks:    " + extractor.Bookmarks)
        Console.WriteLine("Encrypted:    " + extractor.Encrypted.ToString)

        Console.WriteLine()
        Console.WriteLine("Press any key to continue...")
        Console.ReadLine()

	End Sub
End Class