"Have you ever done any .net programming? Yes? Good, here's a massive broken program, fix it". That is the situation I'm in, so sorry if it's an easy question.

The program I am working on pulls a file from a web server. It is expected that the user is already logged into the web server. I need to pull the username of the current person logged into the server (or just make sure someone is indeed logged into the server).

I have tried the following and it returns an empty string.

```
user = HttpContext.Current.User.Identity.Name;

```