Question Getting a list of file handles

[Crazy]

I have found myself in a situation where I need to get a list of all the file handles.

The situation is as follows. I need to delete/replace a certain file. The file is always in use by different 3rd party applications.
So I need a way to get all the file handles and the applications that use it. That way I can ask the user to close those applications first, and replace the file.

It comes down to what you sometimes see in installers, a list of programs you ask the user to close.

I don't have any idea on how to do this, I need to do it in vb.net or c#

All help is appreciated

 

[Crazy]

I found a way to do what I needed.

While browsing the web I found the following site:
Axcis Blog Blog Archive Accessing Files Open in EhShell.

By using NtQuerySystemInformation you're able to get all the files that are in use by a process.

I'm not an expert in it, the code on that site works like a charm, didn't need to do any modifications.