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 End-User Documentation

ChartControl.CustomDrawSeriesPoint Event

Occurs before a series point is drawn when the chart's contents is being drawn.

Namespace:DevExpress.XtraCharts
Assembly:DevExpress.XtraCharts.v17.2.UI.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type CustomDrawSeriesPointEventArgs containing data related to this event.

The following CustomDrawSeriesPointEventArgs properties provide information specific to this event.
Property Description
LabelText Gets or sets the text of a label for the point currently being painted.
PercentValue Returns the portion of the series point's value within the total value of a series group to which the series point belongs.
SecondLabelText Gets or sets the text of a second label for the point currently being painted for specific series views.
SelectionState Specifies the selection state mode for the series whose points are currently being painted.
SeriesPoint Gets the series point currently being painted.
TotalLabelText Gets or sets the text of a series group's total label.
TotalValue Returns the total value of a series group to which the series point belongs.

Expanded Remarks

The CustomDrawSeriesPoint event is raised before every series point is painted. The event parameter's DevExpress.XtraCharts.CustomDrawSeriesEventArgsBase.Series property provides the series which enables the series view and other specific series options to be determined. The DevExpress.XtraCharts.CustomDrawSeriesPointEventArgs.SeriesPoint property provides the series point which enables all the data that corresponds to the series point being painted.

And the DevExpress.XtraCharts.CustomDrawSeriesEventArgsBase.SeriesDrawOptions property provides drawing options specific to each series. Note that the return value of this property should be typecast to the corresponding type (e.g., DevExpress.XtraCharts.BarDrawOptions).

The CustomDrawSeries and CustomDrawSeriesPoint events are always raised in the following order.

  • The CustomDrawSeries event for the first series in the chart's Series collection. The first series in the series collection is a DevExpress.XtraCharts.Series which the DevExpress.XtraCharts.SeriesCollection.IndexOf method returns 0 for.
  • The CustomDrawSeriesPoint event for all the series points of the first series.
  • The CustomDrawSeries event for the second series in the chart's Series collection.
  • The CustomDrawSeriesPoint event for all series points of the second series.
  • ...and so on for all the other series and their points.

Expanded Example

This example demonstrates how to implement custom drawing in charts when drawing the series points of charts. To do this you should handle the CustomDrawSeriesPoint event, and then you can change some of the drawing parameters using its event args.

Expanded See Also

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