/// <summary>
/// Gets the data from the webserver and saves it onto disk for later usage.
/// </summary>
/// <param name="ticker">ticker to get data for</param>
/// <param name="start">Start date for the data</param>
/// <param name="end">End date for the data</param>
/// <param name="interval">Interval in seconds of the data to retreive</param>
/// <returns>Data (price, volume, etc) for the ticker</returns>
private TickerData GetIntraDayDataFromGoogleServer(TickerExchangePair ticker, DateTime start, DateTime end, int interval)
{
string downloadedData;
DownloadURIBuilder uriBuilder = new DownloadURIBuilder(ticker.Exchange, ticker.Ticker);
// Need to always get up till today from the server since google only supports a start date.
string uri = uriBuilder.getGetPricesUrlForIntraday(start, end, interval);
using (WebClient wClient = new WebClient())
{
downloadedData = wClient.DownloadString(uri);
}
using (MemoryStream ms = new MemoryStream(System.Text.Encoding.Default.GetBytes(downloadedData)))
{
DataProcessor dp = new DataProcessor();
string errorMessage;
string resultValue;
resultValue = dp.processIntradayStream(ms, out errorMessage);
if (!string.IsNullOrEmpty(errorMessage))
{
throw new Exception(errorMessage);
}
else
{
return(CreateTickerDataFromString(resultValue, ticker, false, start, end));
}
}
}
/// <summary>
/// Gets teh Url from the Builder
/// </summary>
/// <returns>string - the url calculated in the Builder</returns>
private string getDownloadURI()
{
string ticker = textBoxTicker.Text;
string exchange = textBoxExchange.Text;
if (String.IsNullOrEmpty(ticker))
{
return(string.Empty);
}
DownloadURIBuilder uriBuilder = new DownloadURIBuilder(exchange, ticker);
if (radioButtonAllData.Checked)
{
return(uriBuilder.GetGetPricesUrlToDownloadAllData(DateTime.Now));
}
else if (radioButtonLastQuoute.Checked)
{
return(uriBuilder.GetGetPricesUrlForLastQuote());
}
else if (radioButtonSince.Checked)
{
DateTime startDate = dateTimePickerSinceDate.Value.Date,
endDate = DateTime.Now.Date;
if (endDate < startDate)
{ //It's impossible to download data from the future. That's why no URL is returned in this case.
return(string.Empty);
}
else
{
return(uriBuilder.GetGetPricesUrlForRecentData(startDate, endDate));
}
}
else if (radioButtonMinutes.Checked)
{
return(uriBuilder.GetGetPricesUrlForLastNumberOfDays(15));
}
else
{
return(string.Empty);
}
}
