private void SetRequestPropertiesCustomVariables(HttpActionExecutedContext filterContext)
{
int position = 1;
var customVars = new List <Tuple <string, string> >(5);
// read any "custom variables" that have been set on the request
object customVariablesObj;
filterContext.Request.Properties.TryGetValue("AnalyticsCustomVariables", out customVariablesObj);
var requestCustomVariablesDict = customVariablesObj as Dictionary <string, string> ?? new Dictionary <string, string>();
// also will take custom variables from the controller action arguments
Dictionary <string, object> actionArgumentsDict = filterContext.ActionContext.ActionArguments;
customVars.AddRange(requestCustomVariablesDict.Keys.Select(key =>
new Tuple <string, string>(key, (requestCustomVariablesDict[key] ?? "").ToString(CultureInfo.InvariantCulture))));
customVars.AddRange(actionArgumentsDict.Keys.Select(key =>
new Tuple <string, string>(key, (actionArgumentsDict[key] ?? "").ToString())));
AddPlaceholdersForMissingRequestCustomVariables(requestCustomVariablesDict, actionArgumentsDict, customVars);
Tracker.ClearCustomVariables();
foreach (var customVarPair in customVars.OrderBy(tuple => tuple.Item1))
{
Tracker.SetCustomVariable(position++, customVarPair.Item1, customVarPair.Item2);
// only 5 custom variables allowed in Google Analytics
if (position > 5)
{
break;
}
}
}
