void UpdateYRange()
{
IEnumerable <QuoteRange> ranges = new QuoteRange[] { _quoteData.GetSymbolYRange(rs.LowerValue, rs.UpperValue, Binding) };
if (_comparisonSymbols != null)
{
var cssRange = from cs in _comparisonSymbols where cs.Value.Visibility == SeriesVisibility.Visible select cs.Value.DataSource.GetSymbolYRange(rs.LowerValue, rs.UpperValue, Binding);
ranges = ranges.Union(cssRange);
}
if (ranges.Any())
{
financialChart1.AxisX.Min = rs.LowerValue;
financialChart1.AxisX.Max = rs.UpperValue;
financialChart1.AxisY.Min = ranges.Min(p => p == null ? int.MaxValue : p.PriceMin);
financialChart1.AxisY.Max = ranges.Max(p => p == null ? int.MinValue : p.PriceMax);
if (ranges.First() != null)
{
vs.AxisY.Min = ranges.First().VolumeMin;
vs.AxisY.Max = ranges.First().VolumeMax * 12;
}
}
}
public QuoteRange GetSymbolYRange(IEnumerable <Quote> quoteData, double s, double e, string porperty = null)
{
QuoteRange qr = null;
DateTime ds = Utilities.FromOADate(s); // DateTime.FromOADate(s);
DateTime de = Utilities.FromOADate(e);
IEnumerable <Quote> quoteCache = from p in quoteData where p.date >= ds && p.date <= de select p;
if (quoteCache.Any())
{
qr = new QuoteRange();
qr.PriceMin = quoteCache.Min((k) =>
{
if (string.IsNullOrEmpty(porperty) || porperty.ToUpper() == "high,low,open,close".ToUpper())
{
return(k.low);
}
else
{
return(k.GetValue(porperty));
}
});
qr.PriceMax = quoteCache.Max((k) =>
{
if (string.IsNullOrEmpty(porperty) || porperty.ToUpper() == "high,low,open,close".ToUpper())
{
return(k.high);
}
else
{
return(k.GetValue(porperty));
}
});
qr.VolumeMin = quoteCache.Min(k => k.volume);
qr.VolumeMax = quoteCache.Max(k => k.volume);
}
return(qr);
}