private void InitHistory(string data)
{
List <Candle> list;
Candles candles;
using (var reader = new StringReader(data))
{
list = new List <Candle>();
if (_candleSerializer == null)
{
_candleSerializer = new XmlSerializer(typeof(Candles));
}
candles =
(Candles)
_candleSerializer.Deserialize(reader);
reader.Close();
}
//check if seccode matches
if (candles.Seccode != Seccode)
{
return;
}
//check if timeframe matches
if (candles.Candle.Count > 1 && candles.Period != _periodId.ToString())
{
return;
}
list = candles.Candle;
list =
list.Where(
item =>
item.TradeTime.Date >= DateTime.Today.AddDays(-_daysBack)).ToList();
if (list.Count == 0)
{
return;
}
_dispatcher.Invoke(() =>
{
try
{
StockChartAnnotations.RemoveWhere(
a => a is HorizontalLineAnnotation && ((HorizontalLineAnnotation)a).Name == "history");
}
catch
{
}
}
)
;
OhlcDataSeries = new OhlcDataSeries <DateTime, double> {
AcceptsUnsortedData = true
};
OhlcDataSeries.Append(GetDateTime(list), GetValues(list));
XyDataSeries = new XyDataSeries <DateTime, int>();
XyDataSeries.Append(GetDateTime(list), GetVolumes(list));
//Add trendlines
if (OhlcDataSeries.Count == 0)
{
return;
}
var dates =
OhlcDataSeries.XValues.GroupBy(date => date.Date).Select(group => group.First().Date).ToList();
_lastCandle = list.Last();
if (_selectedTimeframe != "Day")
{
for (var i = 0; i < dates.Count; i++)
{
var date = dates[i];
if (i == dates.Count - 1) //for today (only open)
{
AddAnnotation("history",
list.Where(item => Equals(item.TradeTime.Date, date))
.Select(item => item.Open)
.First(), "Open");
}
else //for other days
{
AddAnnotation("history",
list.Where(item => Equals(item.TradeTime.Date, date))
.Select(item => item.Open)
.First(), "Open");
AddAnnotation("history",
list.Where(item => Equals(item.TradeTime.Date, date))
.Select(item => item.Close)
.Last(), "Close");
AddAnnotation("history",
list.Where(item => Equals(item.TradeTime.Date, date)).Select(item => item.High).Max(),
"High");
AddAnnotation("history",
list.Where(item => Equals(item.TradeTime.Date, date)).Select(item => item.Low).Min(),
"Low");
}
_dispatcher.Invoke(() =>
{
//Vertical date annotations
try
{
StockChartAnnotations.Add(new VerticalLineAnnotation
{
Name = "history",
Stroke = new SolidColorBrush(Colors.DarkGray),
X1 = OhlcDataSeries.FindIndex(OhlcDataSeries.XValues.First(x => x.Date == date)),
IsEditable = false,
Opacity = 0.5,
AnnotationLabels =
new ObservableCollection <AnnotationLabel>
{
new AnnotationLabel
{
LabelPlacement = LabelPlacement.Axis,
Foreground = Brushes.White,
Text = date.ToShortDateString()
}
}
});
}
catch
{
}
});
}
}
try
{
SharedXRange = new IndexRange(0, OhlcDataSeries.Count + 3);
YRange = new DoubleRange(OhlcDataSeries.LowValues.Min(), OhlcDataSeries.HighValues.Max());
}
catch { }
TXmlConnector.SendNewCandles -= ProcessCandles;
}