ByteScout PDF Extractor SDK – ASP.NET – Extract Images

ByteScout PDF Extractor SDK – ASP.NET – Extract Images

Default.aspx.cs

using System;
using System.Collections.Generic;
using System.Drawing.Imaging;
using System.IO;
using Bytescout.PDFExtractor;

namespace ExtractImages
{
	public partial class _Default : System.Web.UI.Page
	{
		protected void Page_Load(object sender, EventArgs e)
		{
			String inputFile = Server.MapPath(@".\bin\sample1.pdf");

			// Create Bytescout.PDFExtractor.ImageExtractor instance
			ImageExtractor extractor = new ImageExtractor();
			extractor.RegistrationName = "demo";
			extractor.RegistrationKey = "demo";
			
			// Load sample PDF document
			extractor.LoadDocumentFromFile(inputFile);

			// Array to keep extracted images
			List<byte&#91;&#93;> extractedImages = new List<byte&#91;&#93;>();

			// Initialize image enumeration
			if (extractor.GetFirstImage())
			{
				do
				{
					// Extract image to memory
					using (MemoryStream memoryStream = new MemoryStream())
					{
						extractor.SaveCurrentImageToStream(memoryStream, ImageFormat.Png);
						// Keep image as byte array
						extractedImages.Add(memoryStream.ToArray());
					}
				} 
				while (extractor.GetNextImage()); // Advance image enumeration
			}
			
			// Write first image to the output stream

			Response.Clear();

			Response.ContentType = "image/png";
			Response.AddHeader("Content-Disposition", "inline;filename=image.png");

			Response.BinaryWrite(extractedImages[0]);
			
			Response.End();
		}
	}
}

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" />
        <!--
            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>

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