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Sunday, 15 June 2014

How to Extract Text From PDF File Using C#.Net

6/15/2014 - By Pranav Singh 3

In this article I will show you how you can read the PDF text using iTextSharp in your c# application. In this article I will retrieve the pdf data and display to console application.


Now for this article first we will download the iTextSharp and now create a new console application and add the below code.

C#.Net
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using iTextSharp.text.pdf;
using iTextSharp.text;
using iTextSharp.text.pdf.parser;

namespace DemoConsoleApplication
{
    class Program
    {
        /// <summary>
        /// How to Extract Text From PDF File Using C#.Net
        /// </summary>
        /// <param name="args"></param>
        static void Main(string[] args)
        {
            /*In this you needed to put your pdf in Bin\Debug folder.
             * If you new put file in bin directory on that case you
             * have to provide drive name*/
            string pdfdata = ExtractTextFromPdf(@"report_grid.pdf");
            Console.WriteLine(pdfdata);
            System.Console.ReadLine();
        }
        public static string ExtractTextFromPdf(string path)
        {
            using (PdfReader reader = new PdfReader(path))
            {
                StringBuilder text = new StringBuilder();

                for (int i = 1; i <= reader.NumberOfPages; i++)
                {
                    text.Append(PdfTextExtractor.GetTextFromPage(reader, i));
                }

                return text.ToString();
            }
        }
    }
}

VB.Net
Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.IO
Imports iTextSharp.text.pdf
Imports iTextSharp.text
Imports iTextSharp.text.pdf.parser

Namespace DemoConsoleApplication
    Class Program
        ''' <summary>
        ''' How to Extract Text From PDF File Using C#.Net
        ''' </summary>
        ''' <param name="args"></param>
        Private Shared Sub Main(ByVal args As String())
            'In this you needed to put your pdf in Bin\Debug folder.
            '             * If you new put file in bin directory on that case you
            '             * have to provide drive name

            Dim pdfdata As String = ExtractTextFromPdf("report_grid.pdf")
            Console.WriteLine(pdfdata)
            System.Console.ReadLine()
        End Sub
        Public Shared Function ExtractTextFromPdf(ByVal path As String) As String
            Using reader As New PdfReader(path)
                Dim text As New StringBuilder()

                Dim i As Integer = 1
                While i <= reader.NumberOfPages
                    text.Append(PdfTextExtractor.GetTextFromPage(reader, i))
                    System.Math.Max(System.Threading.Interlocked.Increment(i), i - 1)
                End While

                Return text.ToString()
            End Using
        End Function
    End Class
End Namespace

In above code path of the pdf file is most important. In this we don’t needed to specify the path of the pdf file. For testing purpose we just needed to put the file in bin directory or you can also provide the physical path of the pdf file.

check the example

 string pdfdata = ExtractTextFromPdf(@"report_grid.pdf");

                   OR
 string pdfdata = ExtractTextFromPdf(@"D:\report_grid.pdf");

Here is the pdf file





Now run the application to check the output.


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3 comments:

  1. how to display the same with table in webform instead of console

    ReplyDelete
    Replies
    1. Hi please try the below link

      http://stackoverflow.com/questions/6882098/how-can-i-get-text-formatting-with-itextsharp
      http://sourceforge.net/projects/pdftohtml/
      http://stackoverflow.com/questions/8123786/c-sharp-converting-pdf-to-html?lq=1

      Delete
  2. I'm not a developer, i always use this free online pdf to text converter to extract text from pdf online free.

    ReplyDelete

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