IFilter or SDK for many file types?
问题 Does anybody know of an API/SDK or IFilter in .NET that can read the subject ('title' metadata) and text from the following files: .PDF .DOC .XLS .PPT .CSV .TXT .DOCX .XLS .PPTX + the OpenOffice and Open Document standards. Open source would be awesome... but commercial is OK too. I can't find anything anywhere! 回答1: I don't think you will be able to find a single IFilter that will be able to access the contents of all of those types. Typically, an IFilter will be for a specific technology.