private void ChartAnnotationsProvider_AnnotationCreated(object sender, ChartAnnotationCreatedEventArgs e)
{
ChartAnnotationsProvider provider = sender as ChartAnnotationsProvider;
DailyLimitationViewModel dailyContext = e.Context as DailyLimitationViewModel;
MonthlyLimitationViewModel monthlyContext = e.Context as MonthlyLimitationViewModel;
if (dailyContext != null)
{
CartesianGridLineAnnotation lineAnnotation = new CartesianGridLineAnnotation();
lineAnnotation.Value = dailyContext.StartValue;
Binding axisBinding = new Binding("VerticalAxis")
{
RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor)
{
AncestorType = typeof(RadCartesianChart)
}
};
BindingOperations.SetBinding(lineAnnotation, CartesianGridLineAnnotation.AxisProperty, axisBinding);
lineAnnotation.Stroke = new SolidColorBrush(Colors.Red);
lineAnnotation.StrokeThickness = 2;
e.Annotation = lineAnnotation;
}
else if (monthlyContext != null)
{
CartesianMarkedZoneAnnotation markedZoneAnnotation = new CartesianMarkedZoneAnnotation();
markedZoneAnnotation.HorizontalFrom = monthlyContext.StartMonth;
markedZoneAnnotation.HorizontalTo = monthlyContext.EndMonth;
markedZoneAnnotation.VerticalFrom = monthlyContext.StartValue;
markedZoneAnnotation.VerticalTo = monthlyContext.EndValue;
markedZoneAnnotation.Fill = new SolidColorBrush(Colors.Green);
e.Annotation = markedZoneAnnotation;
}
}
public override ChartAnnotationDescriptor SelectDescriptor(ChartAnnotationsProvider provider, object context)
{
DailyLimitationViewModel dailyVM = context as DailyLimitationViewModel;
MonthlyLimitationViewModel monthlyVM = context as MonthlyLimitationViewModel;
if (dailyVM != null)
{
return(this.DailyDescriptor);
}
else if (monthlyVM != null)
{
return(this.MonthlyDescriptor);
}
return(null);
}