How to display Chart Tooltips?
Tooltips can be displayed by setting ShowTooltips to true. By default, Tooltips displays the Y value of the series. To display the user defined text as tooltips, we need to set PointsToolTipFormat = "{1}".
Tooltips can be set to ChartArea also. This can be done using ChartAreaToolTip property.
C#
this.chartControl1.ShowToolTips = true;
// Chart Area Tooltips
this.chartControl1.ChartArea.ChartAreaToolTip = "Chart Area";
// Series points Tooltips
series1.PointsToolTipFormat = "{1}";
series1.Style.ToolTip = "Series1";
VB
Me.ChartControl1.ShowToolTips = True
' Chart Area Tooltips
Me.ChartControl1.ChartArea.ChartAreaToolTip = "Chart Area"
' Series points Tooltips
series1.PointsToolTipFormat = "{1}"
series1.Style.ToolTip = "Series1"