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Forked from 0liver/GoogleAnalyticsApi.cs
Last active April 17, 2019 12:56
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C# wrapper around the Google Analytics Measurement Protocol API
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
namespace ConsoleApplication4
{
class GoogleAnalyticsApi
{
/*
* Author: Tyler Hughes
* Credit for the Track function and the Enum HitType goes to 0liver (https://gist.github.com/0liver/11229128)
* Credit goes to spyriadis (http://www.spyriadis.net/2014/07/google-analytics-measurement-protocol-track-events-c/)
* for the idea of putting the values for each tracking method in its own function
*
* Documentation of the Google Analytics Measurement Protocol can be found at:
* https://developers.google.com/analytics/devguides/collection/protocol/v1/devguide
*/
private string endpoint = "http://www.google-analytics.com/collect";
private string googleVersion = "1";
private string googleTrackingID = "UA-XXXX-Y";
private string googleClientID = "555";
public GoogleAnalyticsApi(string trackingID, string clientID)
{
this.googleTrackingID = trackingID;
this.googleClientID = clientID;
}
public void TrackEvent(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 values = DefaultValues;
values.Add("t", HitType.@event.ToString()); // Event hit type
values.Add("ec", category); // Event Category. Required.
values.Add("ea", action); // Event Action. Required.
if (label != null) values.Add("el", label); // Event label.
if (value != null) values.Add("ev", value.ToString()); // Event value.
Track(values);
}
public void TrackPageview(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 values = DefaultValues;
values.Add("t", HitType.@pageview.ToString()); // Event hit type
values.Add("ec", category); // Event Category. Required.
values.Add("ea", action); // Event Action. Required.
if (label != null) values.Add("el", label); // Event label.
if (value != null) values.Add("ev", value.ToString()); // Event value.
Track(values);
}
private void Track(Dictionary<string, string> values)
{
var request = (HttpWebRequest)WebRequest.Create(endpoint);
request.Method = "POST";
request.KeepAlive = false;
var postDataString = values
.Aggregate("", (data, next) => string.Format("{0}&{1}={2}", data, next.Key,
HttpUtility.UrlEncode(next.Value)))
.TrimEnd('&');
// 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()))
{
writer.Write(postDataString);
}
try
{
// Send the response to the server
var webResponse = (HttpWebResponse)request.GetResponse();
if (webResponse.StatusCode != HttpStatusCode.OK)
{
throw new HttpException((int)webResponse.StatusCode, "Google Analytics tracking did not return OK 200");
}
webResponse.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
private enum HitType
{
// ReSharper disable InconsistentNaming
@event,
@pageview,
// ReSharper restore InconsistentNaming
}
private Dictionary<string, string> DefaultValues
{
get
{
var data = new Dictionary<string, string>();
data.Add("v", googleVersion); // The protocol version. The value should be 1.
data.Add("tid", googleTrackingID); // Tracking ID / Web property / Property ID.
data.Add("cid", googleClientID); // Anonymous Client ID (must be unique).
return data;
}
}
}
}
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