/// <summary>
/// Lets the user pick a file to which save currently displayed candles
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnSaveCandles_Click(object sender, EventArgs e)
{
using (var sfd = new SaveFileDialog())
{
sfd.Filter = "csv files (*.csv)|*.csv|All files (*.*)|*.*";
sfd.FilterIndex = 1;
sfd.RestoreDirectory = true;
sfd.InitialDirectory = Application.ExecutablePath;
if (sfd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
CandlesProvider.SaveCandlesToCSV(sfd.FileName, _candles);
}
}
}
/// <summary>
/// Loads candles after clicking on Refresh button
/// </summary>
/// <param name="minDate"></param>
/// <param name="isRealtime"></param>
/// <param name="candlesDurationInMinutes"></param>
/// <param name="maxDate"></param>
private void LoadCandles(DateTime minDate, int candlesDurationInMinutes, DateTime?maxDate)
{
var currencyPair = dataSelector.SelectedPair;
Task.Factory.StartNew(() => CandlesProvider.LoadCandles(currencyPair, minDate, candlesDurationInMinutes, maxDate))
.ContinueWith(taskResult =>
{
if (taskResult.Result != null)
{
_candles = taskResult.Result;
myChartControl.DrawChart(taskResult.Result, Constants.PriceSerieName);
}
}, CancellationToken.None, TaskContinuationOptions.None, TaskScheduler.FromCurrentSynchronizationContext());
}
/// <summary>
/// Called when slow timer ticks, to update displayed candles with latest data
/// </summary>
/// <param name="fetchLiveData"></param>
/// <param name="candlesDurationInMin"></param>
private void UpdateCandles(DateTime fromDate, int candlesDurationInMin, CurrencyPair pair)
{
lock (this)
{
// First load history
if (_candles.Count > 0)
{
UpdateStatus("Fetching new data");
CandlesProvider.UpdateCandlesWithLiveData(fromDate, candlesDurationInMin, _candles, pair);
}
try
{
UpdateStatus("Ready...");
}
catch (Exception ex)
{
UpdateStatus(string.Format("Error during Update: {0}", ex.Message));
}
}
}
/// <summary>
/// Loads chart data from a csv file
/// </summary>
/// <param name="fileName"></param>
private void LoadChartFromCSVCandlesFile(string fileName)
{
_candles = CandlesProvider.ReadCandlesFromCSV(fileName, chartSelector.FromDate, chartSelector.ToDate);
chartCtrl.DrawChart(_candles, Constants.PriceSerieName);
}