C＃/ ASP.NET - 获取从PDF / DOC文件的缩略图 [英] C#/ASP.NET - Get thumbnail from PDF/DOC files

问题描述

我有一个ASP.NET应用程序的WebForms（C＃编写），允许用户使用FileUpload控件上传文件。

I have an ASP.NET WebForms application (written in C#) that allows users to upload files using the FileUpload control.

什么了是巨大的，如果我能自动生成文件的缩略图。图片，如JPG / PNG是微不足道的，当然，但用户会经常上传.doc和.PDF文件 - ？有没有一种方法可以让我.doc和.PDF文件本质上转换成图像，以便我能得到一个缩略图

What'd be great is if I could automatically generate thumbnails from files. Images such as JPG/PNG are trivial of course, but users will often upload .DOC and .PDF files - is there a way I can essentially convert .DOC and .PDF files to images so I can get a thumbnail?

谢谢！

推荐答案

对于PDF你可以从websupergoo尝试ABCPDF。这样，您应该能够生成缩略图，
文档链接从PDF创建PNG。 http://www.websupergoo.com/helppdf8net/source/4 -examples / 19 rendering.htm

For PDf you can try ABCPDF from websupergoo. With that you should be able to generate a thumbnail, Documentation link for creating a PNG from a PDF. http://www.websupergoo.com/helppdf8net/source/4-examples/19-rendering.htm

也是医生，这是一个有点复杂，你将必须安装托管应用程序，并从那里操作图像服务器上的Office应用程序。

also for Doc, it is a little more complex, you are going to have to install the office application on the server that host the apps and from there manipulate the image.

看一下这篇文章。它可以让你提取缩略图Windows资源管理器使用Office文档和定期的图像。
http://msdn.microsoft.com/en-us/library/aa289172.aspx

Look at this article. It lets you extract the thumbnail image that Windows Explorer uses for Office documents and regular images. http://msdn.microsoft.com/en-us/library/aa289172.aspx

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