Example #1
0
 void CarGuruResultScraped(CarGuruResult result)
 {
     currentDispatcher.BeginInvoke((Action)(delegate
     {
         Cars[result.Index].CarGuruPrice = result.InstantMarketValue;
         Cars[result.Index].CarGuruNumberOfVehicles = result.NumberOfListings;
     }));
 }
Example #2
0
        public void GetResult()
        {
            if (HtmlNode.ElementsFlags.ContainsKey("option"))
            {
                HtmlNode.ElementsFlags["option"] = HtmlElementFlag.Closed;
            }
            else
            {
                HtmlNode.ElementsFlags.Add("option", HtmlElementFlag.Closed);
            }

            HtmlWeb web = new HtmlWeb();
            string mainDocUrl = String.Format("http://www.cargurus.com/Cars/instantMarketValueFromVIN.action?startUrl=%2Findex.html&carDescription.vin={0}", this.vin);
            HtmlDocument mainDoc = web.Load(mainDocUrl);

            var makerIdNode = mainDoc.DocumentNode.SelectSingleNode("//select[@name='ign-makerId-selectedEntity']/option[@selected='selected'][last()]");
            var modelIdNode = mainDoc.DocumentNode.SelectSingleNode("//select[@name='ign-modelId-selectedEntity']/option[@selected='selected'][last()]");
            var carIdNode = mainDoc.DocumentNode.SelectSingleNode("//select[@name='ign-carId-selectedEntity']/option[@selected='selected'][last()]");
            var trimIdNode = mainDoc.DocumentNode.SelectSingleNode("//select[@name='ign-trimId-selectedEntity']/option[@selected='selected'][last()]");

            HtmlNode entityIdNode = trimIdNode ?? carIdNode ?? modelIdNode ?? makerIdNode;
            HtmlAttribute entityIdValueAttribute = entityIdNode.Attributes["value"];

            CarGuruResult result = new CarGuruResult();
            result.Index = this.index;

            if (entityIdValueAttribute == null)
            {
                result.InstantMarketValue = "";
                result.NumberOfListings = "0";
                ResultScraped(result);
                return;
            }

            var entityId = entityIdValueAttribute.Value;

            var priceViewUrl = String.Format("http://www.cargurus.com/Cars/priceCalculatorReportAjaxResearchPriceView.action?carDescription.autoEntityId={0}", entityId);
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(priceViewUrl);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream receiveStream = response.GetResponseStream();
            StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
            string responseString = readStream.ReadToEnd();

            HtmlDocument priceViewDoc = new HtmlDocument();
            priceViewDoc.LoadHtml(@"<html>" + responseString + "</html>");

            try
            {
                string instantMarketvalue = priceViewDoc.DocumentNode.SelectSingleNode("//span[@class='instantMarketValue']").InnerHtml;
                result.InstantMarketValue = double.Parse(instantMarketvalue, NumberStyles.Currency).ToString();
            }
            catch
            {
                result.InstantMarketValue = "";
            }

            try
            {
                string numberOfListings = priceViewDoc.DocumentNode.SelectSingleNode("//span[@class='sectionExplanation']").InnerHtml;
                Regex pattern = new Regex(@"^Based on\s*(?<numOfListings>.*)\s*listings");
                Match match = pattern.Match(numberOfListings);
                result.NumberOfListings = match.Groups["numOfListings"].Value.Trim();
            }
            catch
            {
                result.NumberOfListings = "";
            }

            ResultScraped(result);
        }