ASP.Net - Extract Text from PDF in C# and VB .Net.

Complete code.

using System;
using System.Data;
using System.Configuration;
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 System.IO;

public partial class _Default : System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e)
        TextBox1.Text = "";
    protected void Button1_Click(object sender, EventArgs e)
        if (FileUpload1.PostedFile.FileName.Length == 0 || FileUpload1.FileBytes.Length == 0)
            TextBox1.Text = "Please select PDF file at first!";
        SautinSoft.PdfFocus f = new SautinSoft.PdfFocus();
		//this property is necessary only for registered version
		//f.Serial = "XXXXXXXXXXX";

        if (f.PageCount > 0)
            //Convert whole PDF to Text (extract text from PDF)
            string text = f.ToText();

            //show text
            TextBox1.Text = text;
            TextBox1.Text = "Extracting failed!";


            Imports System
Imports System.Data
Imports System.Configuration
Imports System.Web
Imports System.Web.Security
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts
Imports System.Web.UI.HtmlControls
Imports System.IO

Partial Public Class _Default
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        TextBox1.Text = ""
    End Sub
    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
        If FileUpload1.PostedFile.FileName.Length = 0 OrElse FileUpload1.FileBytes.Length = 0 Then
            TextBox1.Text = "Please select PDF file at first!"
        End If

        Dim f As New SautinSoft.PdfFocus()
	    'this property is necessary only for registered version
		'f.Serial = "XXXXXXXXXXX"


        If f.PageCount > 0 Then
            'Convert whole PDF to Text (extract text from PDF)
            Dim text As String = f.ToText()

            'show text
            TextBox1.Text = Text

            TextBox1.Text = "Converting failed!"
        End If
    End Sub
End Class


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