Extension method to time and track a dependency

TelemetryClientExtensions.cs

using Microsoft.ApplicationInsights;
using System;

public static class TelemetryClientExtensions
    {
        public static TResult TrackDependencyTiming<TResult>(this TelemetryClient client, string dependencyName, string commandName, Func<TResult> function)
        {
            var startTime = DateTime.UtcNow;
            var timer = System.Diagnostics.Stopwatch.StartNew();
            var success = true;
            try
            {
                return function();
            }
            catch
            {
                success = false;
                throw;
            }
            finally
            {
                timer.Stop();
                client.TrackDependency(dependencyName, commandName, startTime, timer.Elapsed, success);
            }
        }
    }