Regex to match multiple string

I want to parse a log file to retrieve the time, type and the message. A log file is constructed like this:

[08:52:18] [ERROR] Ceci doit aparaitre 
[08:52:18] [WARN] Bonjour 

I'm currently doing it like this:

var result = Regex.Match(fileLogs, @"/\[(.+)\] \[(.+)\] (.+)/g");

Which is working fine on website like RegexStorm but not on my code. I don't really understand why.

I want to retrieve these element to create a new instance of Log (which have just 3 attributes: time, type and message)