Tooltip and Crosshair Cursor
The Tooltip and Crosshair Cursor allow end-users to interact with the chart and obtain detailed information about data points.
By default the Chart Control uses the Crosshair Cursor when its diagram type is XY-Diagram or Swift Plot and the Tooltip for all other 2D diagrams. 3D diagrams do not support tooltips and crosshair at all.
Though the Tooltip and Crosshair Cursor are similar, these features have the following differences:
All diagram types.
The Crosshair Cursor displays all points that have the same argument or value.
The Chart Control shows the tooltip only for point under the mouse cursor.