FlexChart simplifies customizing tooltip content by allowing you to set pre-defined parameters in the Content property of the tooltip.

To customize content in a tooltip, set the pre-defined parameters in the template string of the Content property of the ChartToolTip class.

The table below lists the pre-defined parameters applicable for tooltip content customization.

The following image displays customized tooltip content showing the index and the data point values.

The following code compares and displays data of number of daily website visitors in a specific week. The code shows how to configure the Content property to customize tooltip content.

'set the Content property
FlexChart1.ToolTip.Content = "Index: {pointIndex}" &
    vbLf & "Day: {name}" &
    vbLf & "{seriesName}: {Visitors}"

// set the Content property
flexChart1.ToolTip.Content = "Index: {pointIndex}\nDay: {name}\n{seriesName}: {Visitors}";