How to: Dock an Annotation to a Chart
This example demonstrates how to anchor an annotation to a chart surface point as shown in the following image:
To do this, specify the ChartAnchorPoint.X and ChartAnchorPoint.Y properties.
<dxc:Annotation Content="Annotation #3">
<dxc:Annotation.AnchorPoint>
<dxc:ChartAnchorPoint X="100"
Y="220"/>
</dxc:Annotation.AnchorPoint>
<dxc:Annotation.ShapePosition>
<dxc:RelativePosition ConnectorLength="80"
Angle="-20"/>
</dxc:Annotation.ShapePosition>
</dxc:Annotation>