In NOV Chart for .NET all chart elements (axes, series, datapoints, etc.) derive from the NChartElement base class, which provides support for Tooltips and Cursors on a per-element basis.

Changing the Tooltip

In order to show a tooltip for a specific chart element you need to change its Tooltip property. The following code snippet shows how to create a bar series with two data points that have an associated tooltip:

NBarSeries bar = new NBarSeries();
NBarDataPoint dataPoint1 = new NBarDataPoint(10);
dataPoint1.Tooltip = new NTooltip("Bar value 10");
bar.DataPoints.Add(dataPoint1);
NBarDataPoint dataPoint2 = new NBarDataPoint(20);
dataPoint2.Tooltip = new NTooltip("Bar value 20");
bar.DataPoints.Add(dataPoint2);
chart.Series.Add(bar);

Changing the Mouse Cursor

By default, the mouse cursor applied on all chart elements is the default mouse cursor. If you wish to change that for a specific chart element you need to assign a new cursor to the Cursor property of the element:

someChartElement.Cursor = new NCursor(ENPredefinedCursor.Hand);