MarkerSeriesView.Angle Attached Property
Gets or sets the angle which controls the position of data point labels for all series with markers.
A Double value specifying the angle, in degrees, for the position of data point labels.
The Angle property affects the position of data point labels relative to the corresponding data points. The angle value set for this property specifies the inclination of the connector line between a data point and its label. The angle is measured in degrees, and counterclockwise from the horizontal.