Find Text in PDF | ASP.NET C#ByteScout PDF Extractor SDK

Find Text in PDF | ASP.NET C#

Default.aspx:

VB
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="FindText._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:

C#
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using System;
using Bytescout.PDFExtractor;

namespace FindText
{
    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.TextExtractor instance
            TextExtractor extractor = new TextExtractor();
            extractor.RegistrationName = "demo";
            extractor.RegistrationKey = "demo";

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

            // Set the matching mode.
            // WordMatchingMode.None - treats the search string as substring
            // WordMatchingMode.ExactMatch - treats the search string as separate word
            // WordMatchingMode.SmartMatch - will find the word in various forms (like Adobe Reader).
            extractor.WordMatchingMode = WordMatchingMode.ExactMatch;

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

            Response.Write("Searching for \"ipsum\" string:<br>");

            // Search for "ipsum" string
            if (extractor.Find(0, "ipsum", false))
            {
                do
                {
                    Response.Write("<br/>");
                    Response.Write("Found on page 1 at location " + extractor.FoundText.Bounds + "<br/>");
                    Response.Write("<br/>");

                    // The found text may be splitted to parts.
                    // Iterate through each part of the found text.
                    for (var i = 0; i < extractor.FoundText.Elements.Count; i++)
                    {
                        ISearchResultElement element = extractor.FoundText.Elements[i];

                        Response.Write("Element #" + i + " at " + element.Bounds + "<br/>");
                        Response.Write("Text: " + element.Text + "<br/>");
                        Response.Write("Font is bold: " + element.FontIsBold + "<br/>");
                        Response.Write("Font is italic:" + element.FontIsItalic + "<br/>");
                        Response.Write("Font name: " + element.FontName + "<br/>");
                        Response.Write("Font size:" + element.FontSize + "<br/>");
                        Response.Write("Font color:" + element.FontColor + "<br/>");
                    }
                }
                while (extractor.FindNext());
            }

            Response.End();
        }
    }
}

Web.config:

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<?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" />
        <!--
            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>
        -->
    </system.web>
</configuration>