Edit and upload word/excel/PPT documents online using asp C#

Question

Hi ,

 

I've two requirements related to word document view, edit & save new changes in asp.net web application.

 

1. I want to implement something similar to outlook attachment previewer, just click on the document and users should be able to view the content without downloading.

 

2. this is just extension of 1st requirement, I should be able to edit the document online and save the changes. No other users should be able to edit the same file when the file is already in use (Something similar to TFS )

 

Please note all files should be saved on my server.

 

Third-party tools are not that preferred if they store the files on their server.

 

Thanks alot in advance.