Included Instrumentation

using System;
using System.Configuration;
using System.Web.Mvc;
using System.Web.Routing;
using Sentry;
using Sentry.AspNet;

namespace AspNetMvc
{
    public class MvcApplication : System.Web.HttpApplication
    {
        private IDisposable _sentry;

        protected void Application_Start()
        {
            // Set up the sentry SDK
            _sentry = SentrySdk.Init(o =>
            {
                // We store the DSN inside Web.config; make sure to use your own DSN!
                o.Dsn = https://examplePublicKey@o0.ingest.sentry.io/0

                // Get ASP.NET integration
                o.AddAspNet();

                // When configuring for the first time, to see what the SDK is doing:
                o.Debug = true;

                // This option will enable Sentry's tracing features. You still need to start transactions and spans.
                o.EnableTracing = true;

                // Example sample rate for your transactions: captures 10% of transactions
                o.TracesSampleRate = 0.1;
            });
        }

        // Global error catcher
        protected void Application_Error() => Server.CaptureLastError();

        protected void Application_End()
        {
            // Close the Sentry SDK (flushes queued events to Sentry)
            _sentry?.Dispose();
        }

        protected void Application_BeginRequest()
        {
            // Start a transaction that encompasses the current request
            Context.StartSentryTransaction();
        }

        protected void Application_EndRequest()
        {
            Context.FinishSentryTransaction();
        }
    }
}

using System;
using System.Web.Mvc;

public class HomeController : Controller
{
    [HttpGet("/person/{id}")]
    public ActionResult Person(string id) { /* ... */ }
}

using System;
using System.Web.Mvc;
using Sentry;

public class HomeController : Controller
{
    [HttpGet("/person/{id}")]
    public ActionResult Person(string id)
    {
        var childSpan = SentrySdk.GetSpan()?.StartChild("additional-work");
        try
        {
            // Do the work that gets measured.

            childSpan?.Finish(SpanStatus.Ok);
        }
        catch (Exception e)
        {
            childSpan?.Finish(e);
            throw;
        }
    }
}