private void TicksToCandles(string data)
{
var ticks = ((List <Tick>)
new XmlSerializer(typeof(List <Tick>), new XmlRootAttribute("ticks")).Deserialize(
new StringReader(data))).Where(item => item.Board == _board && item.Seccode == _seccode)
.ToList();
if (_ticks == null)
{
_ticks = ticks;
}
else
{
_ticks.AddRange(ticks);
}
var interval = new TimeSpan(0, _timeframe, 0);
var temp = (from t in _ticks
group t by DateTime.Parse(t.Tradetime).Ticks / interval.Ticks
into g
select new Candle
{
High = (from t2 in g select t2.Price).Max(),
Low = (from t2 in g select t2.Price).Min(),
Open = g.First().Price,
Close = g.Last().Price,
Volume = g.Count(),
Time = g.First().Tradetime
}).ToList();
foreach (var candle in temp)
{
if (candle.Open < candle.Close)
{
candle.StickColor = System.Windows.Media.Brushes.Green;
}
else
{
candle.StickColor = System.Windows.Media.Brushes.Red;
}
}
if (Candles.Count == _historyCount)
{
var realtime = Candles.ToList();
realtime.AddRange(temp);
Candles = new ObservableCollection <Candle>(realtime);
return;
}
//todo : create value if u use some math or other operatin which dublicated
var qqqqq = temp.Count + _historyCount;
if (qqqqq == Candles.Count)
{
_dispatcher.Invoke(() => Candles[Candles.Count - 1] = temp.Last());
}
else if (qqqqq == Candles.Count + 1)
{
_dispatcher.Invoke(() => Candles.Add(temp.Last()));
}
else
{
Candles = new ObservableCollection <Candle>(temp);
}
}
