Important Update
Sample source code below will show you how to cope with a difficult task like convert PDF to PNG in ASP.NET C#. ByteScout PDF Renderer SDK is the SDK for rendering of PDF into high-quality thumbnails and images. Includes various functions like batch processing, PNG, TIFF output. Can be used from web and desktop applications and you can use it to convert PDF to PNG with ASP.NET C#.
The SDK samples like this one below explain how to quickly make your application do convert PDF to PNG in ASP.NET C# with the help of ByteScout PDF Renderer SDK. Follow the instructions from the scratch to work and copy the ASP.NET C# code. This basic programming language sample code for ASP.NET C# will do the whole work for you to convert PDF to PNG.
Trial version of ByteScout PDF Renderer SDK is available for free. Source code samples are included to help you with your ASP.NET C# app.
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="BasicExample._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>
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using System;
using System.Web.UI;
using Bytescout.PDFRenderer;
namespace BasicExample
{
public partial class _Default : 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)
{
// Prepare a test document.
// Multipage.pdf file will be copied to the project directory on the pre-build event (see the project properties).
String inputDocument = Server.MapPath("multipage.pdf");
// Create an instance of Bytescout.PDFRenderer.RasterRenderer object and register it.
RasterRenderer renderer = new RasterRenderer();
renderer.RegistrationName = "demo";
renderer.RegistrationKey = "demo";
// Load PDF document.
renderer.LoadDocumentFromFile(inputDocument);
// Prepare response.
Response.Clear();
Response.ContentType = "image/png";
Response.AddHeader("Content-Disposition", "inline;filename=result.png");
// Render first page of the document to the output stream.
renderer.Save(Response.OutputStream, RasterImageFormat.PNG, 0, 300);
Response.End();
}
}
}
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//------------------------------------------------------------------------------
// <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 BasicExample
{
public partial class _Default
{
protected System.Web.UI.HtmlControls.HtmlForm form1;
}
}
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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>
60 Day Free Trial or Visit ByteScout PDF Renderer SDK Home Page
Explore ByteScout PDF Renderer SDK Documentation
Explore Samples
Sign Up for ByteScout PDF Renderer SDK Online Training
Get Your API Key
Explore Web API Docs
Explore Web API Samples
60 Day Free Trial or Visit ByteScout PDF Renderer SDK Home Page
Explore ByteScout PDF Renderer SDK Documentation
Explore Samples
Sign Up for ByteScout PDF Renderer SDK Online Training
Get Your API Key
Explore Web API Docs
Explore Web API Samples