Edit Word Document at client side and update back to server side appli

Question

Hi All,

Topic: Edit Word Document at client side and update back to server side application

I have a desktop application i.e. server- client app (not web) running on a server which hosts several DOCX Documents (MS Word documents)

I want the user (using my application) after choosing any document to be able to:

• open the document using Microsoft Word installed on his PC
• View the document and edit it.
• save his work, and changes must be committed to the server.

could anyone help me how to do that

ie.

• lunch MS Word on client PC
• know when the user closes the MS Word application on his PC
• is it necessary to download the file before editing it or I can edit it remotely?

Thanks in advance