Duration

Some .Net code to track how long things take in a using statement

Usage

using (new DurationLogger((msg) => _logger.Debug(msg), "code_section.login"))
{
  // Do something that takes a long time, like make a HTTP request.
}

The argument passed to logging lambda expression will be:

code_section.login=5ms

One way to use this is to pass a function that logs to a log4net logger.