Retrieve file summary information using c#

I am looking for a way to retrieve summary information from a file. Such as “Title”, “Subject”, “Author”, “Comments”.

The type of files I want to retrieve this information from is jpeg, txt, bmp…

I guess I have to download some dll that have methods to do this, but I have not been able to find any.

All help would be appreciated!

Thanks in advance.

Correct me, if I am wrong, but i think, that FileProperties such as “Title”, “Subject”, “Author”, “Comments” can not be read from the file itself, for they are features of the OS.

Many formats have their own way to store such information, such as the exif-info.

You are correct, I´ve found a dll that helps reading those properties from an environment with Active Directory. But in an environment with novell and LDAP this doesn´t work.
So I just wonder if anyone has done this in an environment with novell and LDAP or have any ideas of how to do it??