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Extract Images from PDF - ASP.NET C#

PDF Extractor SDK sample in ASP.NET C# demonstrating ‘Extract Images from PDF’

Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ExtractImages._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.Collections.Generic;
using System.Drawing.Imaging;
using System.IO;
using Bytescout.PDFExtractor;

namespace ExtractImages
{
    /*
    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

    */

	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[]> extractedImages = new List<byte[]>();

			// 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();
		}
	}
}

Default.aspx.designer.cs
��//------------------------------------------------------------------------------

// <auto-generated>

//     This code was generated by a tool.

//     Runtime Version:2.0.50727.4952

//

//     Changes to this file may cause incorrect behavior and will be lost if

//     the code is regenerated.

// </auto-generated>

//------------------------------------------------------------------------------



namespace ExtractAllImages {

    

    

    /// <summary>

    /// _Default class.

    /// </summary>

    /// <remarks>

    /// Auto-generated class.

    /// </remarks>

    public partial class _Default {

        

        /// <summary>

        /// form1 control.

        /// </summary>

        /// <remarks>

        /// Auto-generated field.

        /// To modify move field declaration from designer file to code-behind file.

        /// </remarks>

        protected global::System.Web.UI.HtmlControls.HtmlForm form1;

    }

}


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