void CarGuruResultScraped(CarGuruResult result)
{
currentDispatcher.BeginInvoke((Action)(delegate
{
Cars[result.Index].CarGuruPrice = result.InstantMarketValue;
Cars[result.Index].CarGuruNumberOfVehicles = result.NumberOfListings;
}));
}
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);
}