ByteScout Premium Suite – ASP.NET C# – Make PDF Unsearchable with PDF Extractor SDK

Home
/
Articles
/
ByteScout Premium Suite – ASP.NET C# – Make PDF Unsearchable with PDF Extractor SDK

printable version:
ByteScout-Premium-Suite-ASP-NET-C-sharp-Make-PDF-Unsearchable-with-PDF-Extractor-SDK.pdf

How to make PDF unsearchable with PDF extractor SDK in ASP.NET C# and ByteScout Premium Suite

How to write a robust code in ASP.NET C# to make PDF unsearchable with PDF extractor SDK with this step-by-step tutorial

These source code samples are assembled by their programming language and functions they apply. What is ByteScout Premium Suite? It is the bundle that includes twelve SDK products from ByteScout including tools and components for PDF, barcodes, spreadsheets, screen video recording. It can help you to make PDF unsearchable with PDF extractor SDK in your ASP.NET C# application.

These ASP.NET C# code samples for ASP.NET C# guide developers to speed up coding of the application when using ByteScout Premium Suite. Just copy and paste the code into your ASP.NET C# application’s code and follow the instructions. If you want to use these ASP.NET C# sample examples in one or many applications then they can be used easily.

All these programming tutorials along with source code samples and ByteScout free trial version are available for download from our website.

On-demand (REST Web API) version:
Web API (on-demand version)

On-premise offline SDK for Windows:
60 Day Free Trial (on-premise)

Default.aspx

      <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="MakePDFUnsearchable._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Premium Suite Home Page

Explore ByteScout Premium Suite Documentation

Explore Samples

Sign Up for ByteScout Premium Suite Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Default.aspx.cs

      using System;
using System.IO;
using System.Web.UI;
using Bytescout.PDFExtractor;

namespace MakePDFUnsearchable
{
    public partial class _Default : System.Web.UI.Page
    {
        /*
        IF YOU SEE TEMPORARY FOLDER ACCESS ERRORS: 

        Temporary folder access is required for web application when you use ByteScout SDK in it.
        If you are getting errors related to the access to temporary folder like "Access to the path 'C:\Windows\TEMP\... is denied" then you need to add permission for this temporary folder to make ByteScout SDK working on that machine and IIS configuration because ByteScout SDK requires access to temp folder to cache some of its data for more efficient work.

        SOLUTION:

        If your IIS Application Pool has "Load User Profile" option enabled the IIS provides access to user's temp folder. Check user's temporary folder

        If you are running Web Application under an impersonated account or IIS_IUSRS group, IIS may redirect all requests into separate temp folder like "c:\temp\".

        In this case
        - check the User or User Group your web application is running under
        - then add permissions for this User or User Group to read and write into that temp folder (c:\temp or c:\windows\temp\ folder)
        - restart your web application and try again

        */

        protected void Page_Load(object sender, EventArgs e)
        {
            String inputFile = Server.MapPath(@".\bin\sample1.pdf");

            // Create Bytescout.PDFExtractor.UnsearchablePDFMaker instance
            UnsearchablePDFMaker unsearchablePDFMaker = new UnsearchablePDFMaker();
            unsearchablePDFMaker.RegistrationName = "demo";
            unsearchablePDFMaker.RegistrationKey = "demo";

            // Load sample PDF document
            unsearchablePDFMaker.LoadDocumentFromFile(inputFile);

            // Set PDF rendering resolution to 150 DPI. Higher value - better quality, but larger output file.
            unsearchablePDFMaker.RenderingResolution = 150;
            // Set embedded images format
            unsearchablePDFMaker.ImageFormat = EmbeddedImageFormat.PNG;

            Response.Clear();
            Response.ContentType = "application/pdf";
            Response.AddHeader("Content-Disposition", "attachment;filename=result.pdf");

            // Process document and write result to temporary stream.
            byte[] resultBytes;
            using (MemoryStream tempStream = new MemoryStream())
            {
                unsearchablePDFMaker.MakePDFUnsearchable(tempStream);
                resultBytes = tempStream.ToArray();
            }

            // Write result bytes to the output stream
            Response.BinaryWrite(resultBytes);

            Response.End();
        }
    }
}

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Premium Suite Home Page

Explore ByteScout Premium Suite Documentation

Explore Samples

Sign Up for ByteScout Premium Suite Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Default.aspx.designer.cs

      //------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by a tool.
//     Runtime Version:2.0.50727.42
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------

namespace MakeUnsearchablePDF
{

    public partial class _Default
    {
        protected System.Web.UI.HtmlControls.HtmlForm form1;
    }
}

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Premium Suite Home Page

Explore ByteScout Premium Suite Documentation

Explore Samples

Sign Up for ByteScout Premium Suite Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Web.config

      <?xml version="1.0"?>
<configuration>
  <appSettings/>
  <connectionStrings/>
  <system.web>
    <!-- 
            Set compilation debug="true" to insert debugging 
            symbols into the compiled page. Because this 
            affects performance, set this value to true only 
            during development.
        -->
    <compilation debug="true" targetFramework="4.0"/>
    <!--
            The <authentication> section enables configuration 
            of the security authentication mode used by 
            ASP.NET to identify an incoming user. 
        -->
    <authentication mode="Windows"/>
    <!--
            The <customErrors> section enables configuration 
            of what to do if/when an unhandled error occurs 
            during the execution of a request. Specifically, 
            it enables developers to configure html error pages 
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
    <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/>
  </system.web>
</configuration>