How to capture redirects in ASP.NET MVC

Question

I have an ActionFilter that is successfully capturing page views along with important information from the request. The primary key of this captured entry is then associated with an activity (i.e: Successful Login).

I am trying to now automatically capture Redirects (i.e: RedirectToAction) and associate this with the page view as well. I believe this can be done in my ActionFilter that is capturing page views, but I am unsure if there is a way to tell from the OnActionExecuting context whether or not the GET request is coming from a redirect.

Is there a way to tell from an HttpRequest / ActionExecutingContext(or ActionExecutedContext) whether or not the page is coming from a redirect?

Thanks!

Answer 1

RedirectToAction returns a RedirectToRouteResult

In the OnActionExecuted method of your filter -

if (filterContext.Result is RedirectResult)
{
    // It was a RedirectResult
    var result = filterContext.Result as RedirectResult;
    var url = UrlHelper.GenerateContentUrl(result.Url, filterContext.HttpContext);
}
else if (filterContext.Result is RedirectToRouteResult)
{
    // It was a RedirectToRouteResult
    var result = filterContext.Result as RedirectToRouteResult;
    var url = UrlHelper.GenerateUrl(result.RouteName, null, null, result.RouteValues, RouteTable.Routes, filterContext.RequestContext, false);
}