a timing api to log api calls to system trace. this is useful in windows azure website, since you can stream trace information from the infrastructure when you need to diagnose.

LoggingStopwatch.cs

  public class LoggingStopwatch : IDisposable
    {
        private readonly string _operationname;
        private Stopwatch stopwatch;

        public LoggingStopwatch(string operationname)
        {
            _operationname = operationname;
            stopwatch = new Stopwatch();
            System.Diagnostics.Trace.WriteLine("Starting tracing of "+ operationname);
            stopwatch.Start();
        }

        public void Dispose()
        {
            stopwatch.Stop();
            System.Diagnostics.Trace.WriteLine("Operation " +_operationname+" took " + stopwatch.Elapsed);
        }
    }

Timing Logger Example.cs

         using (new LoggingStopwatch("call third part api xxxxxx"))
          {
            //call your slow third party api here
            return response;
           }