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C# wrapper around the Google Analytics Measurement Protocol API
/* based on the docs at: */
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
namespace Generic.Core.WebContext
public class GoogleAnalyticsApi
public static void TrackEvent(string category, string action, string label, int? value = null)
Track(HitType.@event, category, action, label, value);
public static void TrackPageview(string category, string action, string label, int? value = null)
Track(HitType.@pageview, category, action, label, value);
private static void Track(HitType type, string category, string action, string label,
int? value = null)
if (string.IsNullOrEmpty(category)) throw new ArgumentNullException("category");
if (string.IsNullOrEmpty(action)) throw new ArgumentNullException("action");
var request = (HttpWebRequest) WebRequest.Create("");
request.Method = "POST";
// the request body we want to send
var postData = new Dictionary<string, string>
{ "v", "1" },
{ "tid", "UA-XXXXXX-XX" },
{ "cid", "555" },
{ "t", type.ToString() },
{ "ec", category },
{ "ea", action },
if (!string.IsNullOrEmpty(label))
postData.Add("el", label);
if (value.HasValue)
postData.Add("ev", value.ToString());
var postDataString = postData
.Aggregate("", (data, next) => string.Format("{0}&{1}={2}", data, next.Key,
// set the Content-Length header to the correct value
request.ContentLength = Encoding.UTF8.GetByteCount(postDataString);
// write the request body to the request
using (var writer = new StreamWriter(request.GetRequestStream()))
var webResponse = (HttpWebResponse) request.GetResponse();
if (webResponse.StatusCode != HttpStatusCode.OK)
throw new HttpException((int) webResponse.StatusCode,
"Google Analytics tracking did not return OK 200");
catch (Exception ex)
// do what you like here, we log to Elmah
// ElmahLog.LogError(ex, "Google Analytics tracking failed");
private enum HitType
// ReSharper disable InconsistentNaming
// ReSharper restore InconsistentNaming

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@BorisKozo BorisKozo commented Apr 2, 2015

I found your gist very useful.
Just two things you might want to add to save others some debug time.

  1. request.KeepAlive = false;
  2. webResponse.close();

Otherwise the third call to the function will get stuck until the request timeout.

Thanks :)


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@cgoasduff cgoasduff commented May 15, 2016

Hi There, thanks for the code but no events are recorded when I use it. I think this may be to do with "cid", "555" -- where do I get the value which should overwrite the "555" from your sample code ? thanks C


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@markalanevans markalanevans commented Feb 28, 2017

Also you should update this to be https:

According to their docs:


URL Endpoint

You send data using the Measurement Protocol by making HTTP requests to the following end point:

All data should be sent securely with the HTTPS protocol.

You can send data using either POST or GET requests.


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@Arimov Arimov commented Feb 24, 2019

I think for tracking pages, the code is not correct. Need to pass parameters dh, dp, dt
See documentation:

v=1              // Version.
&tid=UA-XXXXX-Y  // Tracking ID / Property ID.
&cid=555         // Anonymous Client ID.

&t=pageview      // Pageview hit type.
&   // Document hostname.
&dp=/home        // Page.
&dt=homepage     // Title.
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