private void RemoveChartOverlays()
{
if (_ChartExtender == null || _ChartExtender.PlotArea == null)
return;
_ChartExtender.PlotArea.Children.Remove(_VerticalLine);
_LegendDialog.Hide();
_LegendDialog.Dispose();
_LegendDialog = null;
}
private void AddChartOverlays()
{
if (_ChartExtender == null || _ChartExtender.PlotArea == null)
return;
_ChartExtender.PlotArea.SizeChanged += OnPlotAreaSizeChanged;
double dY = _ChartExtender.PlotArea.ActualHeight;
_VerticalLine = new Line() { X2 = 0, Y2 = 1000, VerticalAlignment = VerticalAlignment.Stretch, Stroke = Colors.Black.ToBrush() };
_ChartExtender.PlotArea.Children.Add(_VerticalLine);
_LegendDialog = new LegendDialog(_ChartExtender.ChartArea);
SetChartOverlaysWithDate();
}
