from:https://www.ghostscript.com/download/gsdnld.html
https://www.codeproject.com/Articles/317700/Convert-a-PDF-into-a-series-of-images-using-Csharp
https://www.cyotek.com/blog/convert-a-pdf-into-a-series-of-images-using-csharp-and-ghostscript
https://github.com/mephraim/ghostscriptsharp gsdll32.dll，有32位和64位的。把它放在相应的BIN文件夹下。
https://archive.codeplex.com/?p=ghostscriptnet
https://archive.codeplex.com/?p=ghostscriptstudio
把gsdll32.dll 放在BIN下
Safari for Windows 5.1.7 http://appldnld.apple.com/Safari5/041-5487.20120509.INU8B/SafariSetup.exe
<form id="form1" runat="server">
<div>
<p>
<asp:LinkButton runat="server" ID="previousLinkButton" Text="Previous" OnClick="previousLinkButton_Click" />
<asp:LinkButton runat="server" ID="nextLinkButton" Text="Next" OnClick="nextLinkButton_Click" />
</p>
<p>
<asp:Image runat="server" ID="pdfImage" ImageUrl="~/PdfImage.ashx?fileName=sample.pdf&page=1" />
</p>
</div>
</form>
/// <summary>
///
/// </summary>
public partial class _Default : System.Web.UI.Page
{
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void previousLinkButton_Click(object sender, EventArgs e)
{
this.IncrementPage(-1);
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void nextLinkButton_Click(object sender, EventArgs e)
{
this.IncrementPage(1);
}
/// <summary>
/// /
/// </summary>
/// <param name="increment"></param>
private void IncrementPage(int increment)
{
NameValueCollection queryString;
int pageNumber;
string pdfFileName;
Pdf2Image converter;
queryString = HttpUtility.ParseQueryString(pdfImage.ImageUrl.Substring(pdfImage.ImageUrl.IndexOf("?")));
pdfFileName = queryString["fileName"];
pageNumber = Convert.ToInt32(queryString["page"]) + increment;
converter = new Pdf2Image(this.Server.MapPath("~/" + pdfFileName));
if (pageNumber > 0 && pageNumber <= converter.PageCount)
pdfImage.ImageUrl = string.Format("~/PdfImage.ashx?fileName={0}&page={1}", pdfFileName, pageNumber);
}
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Web;
using Cyotek.GhostScript.PdfConversion;
namespace GhostScriptWebTest
{
public class PdfImage : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
string fileName;
int pageNumber;
Pdf2Image convertor;
Bitmap image;
fileName = context.Server.MapPath("~/" + context.Request.QueryString["fileName"]);
pageNumber = Convert.ToInt32(context.Request.QueryString["page"]);
// convert the image
convertor = new Pdf2Image(fileName);
image = convertor.GetImage(pageNumber);
// set the content type
context.Response.ContentType = "image/jpeg";// "image/png";
// save the image directly to the response stream
image.Save(context.Response.OutputStream, ImageFormat.Jpeg); //
}
public bool IsReusable
{ get { return true; } }
}
}
|
IE6 |
IE 8.0 |
Chrome |
Firefox |
|
|
png |
image/x-png |
image/x-png |
image/png |
image/png |
|
jpg |
image/pjpeg |
image/jpeg |
image/jpeg |
image/jpeg |
|
jpeg |
image/pjpeg |
image/pjpeg |
image/jpeg |
image/jpeg |
|
bmp |
image/bmp |
image/bmp |
image/bmp |
image/bmp |