Get UserAgent for user's default browser

Question

I'm making an application that contains a WebBrowser element and I would like to have the application show the useragent for that user's default browser.

I know how to get both the default browser via Registry keys and how to get the user agent for a browser but cannot figure out how to combine the two. Is this possible?

Answer 1

What I would do (of course, this is a bit of an overkill here) is to include a web server and request an URL from this web server, thus getting the user agent.

I.e. roughly this would include:

1. Implement a web server inside the application, e.g. this one
2. Let the WebBrowser control call a local URL of the webserver (e.g. http://127.0.0.1:48384/test)
3. In the web server's request handler, store the user agent into a variable
4. Show this variable to the end user (e.g. in a Label control on your WinForm app or simply by sending a response back from the webserver.

I've successfully used the web server inside my applications several times. One example would by my HTML edit control over at the Code Project.