How do I get session id from requestTelemetry?

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using MyLibrary.Web.Context;
using Microsoft.ApplicationInsights.Channel;
using Microsoft.ApplicationInsights.Extensibility;


namespace ACME.Foundation.Analytics
{
    public class ApplicationInsightsSessionInitializer : ITelemetryInitializer
    {
        public void Initialize(ITelemetry telemetry)
        {
            var requestTelemetry = telemetry as RequestTelemetry;
            if (requestTelemetry == null) return;

            if (HttpContext.Current.Session.SessionID != null)
            {
                telemetry.Context.Session.Id = HttpContext.Current.Session.SessionID;
            }
        }
    }
}

In ApplicationInsights.config

<Add Type="ACME.Foundation.Analytics.ApplicationInsightsSessionInitializer, ACME.Foundation.Analytics" />
<Add Type="Microsoft.ApplicationInsights.StatusMonitor.SdkSourceTelemetryInitializer, Microsoft.AI.StatusMonitor" />

How do I get session id from requestTelemetry? I have this snippet in my analytics telemetry folder. It seems as if the itemType Request does not have a a session ID. Everytime a request appears, the session is null.

I'd like to match it with the proper sessionID, and can't override it in the app insights sessionID

I was following the example here: https://learn.microsoft.com/en-us/azure/application-insights/app-insights-usage-send-user-context

and based my solution on the demo located halfway down the page, but doesn't seem to be working for me.

Any help would be appreciated!

In short, this example is incorrect and there is a [documentation issue](https://github.com/MicrosoftDocs/azure-docs/issues/11721) opened against it on GitHub and a [user voice](https://feedback.azure.com/forums/357324-application-insights/suggestions/32508511-fix-the-session-examples-or-app-insights-behaviour) item on Azure Feedback. There are several suggestions / workarounds listed in those issues that may be of help. — Dmitry Matveev, Sep 13 '18 at 00:22

score 0 · Accepted Answer · answered Sep 17 '18 at 07:07

as per @Dmitry metioned, the example is incorrect.

There is another way you can set sessionid, you can refer to this link:

private static TelemetryClient GetTelemetryClient()
{
var telemetryClient = new TelemetryClient();
telemetryClient.InstrumentationKey = "<your actual insight instrumentkey>";
telemetryClient.Context.Session.Id = "124556";
//update 1-Custom properties- Start
telemetry.Context.Properties["tags"] = "PROD";
telemetry.Context.Properties["userCorelateId"]="1234"; 
//update 1-Custom properties- Ends                
return telemetryClient;
}

How do I get session id from requestTelemetry?

1 Answers1