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Make PDF Unsearchable - ASP.NET C#

PDF Extractor SDK sample in ASP.NET C# demonstrating ‘Make PDF Unsearchable’

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>

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();
        }
    }
}

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;

    }

}


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