难题求解：如何获得某个文件的类型（ContentType）？谢谢！！！ 例如：

[cwsj]

难题求解：如何获得某个文件的类型（ContentType）？谢谢！！！ 例如：

Stream stream = File.OpenRead(fileName);

打开一个文件流我如何获得该文件的类型呢？



类似上传文件时获取文件类型的方法怎么用呢？
System.Web.HttpPostedFile files ；
files.ContentType;

[henryfan1]

在打开前用
System.IO.Path.GetExtension获得

[sbf2000]

up

[saucer]

a lot of files do not have a content type, if they did, don't you think Microsoft would provide a ContentType property for FileInfo class? that said, here is something you might want to look into:

HOW TO: work with the Windows Registry to determine the content-type of a file based on the file extension
http://www.aspemporium.com/aspEmporium/cshrp/howtos/howto.asp?hid=19