ChartControl.CustomizePieTotalLabel Event

Occurs when the ChartControl draws total labels for Pie and Doughnut series.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v20.2.UI.dll

NuGet Package: DevExpress.Win.Charts

Declaration

C#

public event CustomizePieTotalLabelEventHandler CustomizePieTotalLabel

VB.NET

Public Event CustomizePieTotalLabel As CustomizePieTotalLabelEventHandler

Event Data

The CustomizePieTotalLabel event's data class is CustomizePieTotalLabelEventArgs. The following properties provide information specific to this event:

Property	Description
Series	Returns a pie series whose total label is customized.
Text	Gets or sets the total label text.
TextColor	Gets or sets the total label’s text color.
TotalValue	Returns the total label value.

Remarks

The CustomizePieTotalLabel event allows you to customize the total label appearance based on a specific condition.

Example

This example shows how to format the Doughnut series total label text depending on the pie slice total value:

C#

chartControl1.CustomizePieTotalLabel += OnCustomizePieTotalLabel;
//...
private void OnCustomizePieTotalLabel(object sender, CustomizePieTotalLabelEventArgs e) {
    if (e.TotalValue > 10000) {
        e.TextColor = Color.Green;
        e.Text = $"{e.TotalValue / 1000}K";
    }
}

VB.NET

chartControl1.CustomizePieTotalLabel += OnCustomizePieTotalLabel
'...
Private Sub OnCustomizePieTotalLabel(ByVal sender As Object, ByVal e As CustomizePieTotalLabelEventArgs)
    If e.TotalValue > 10000 Then
        e.TextColor = Color.Green
        e.Text = $"{e.TotalValue / 1000}K"
    End If
End Sub