Doughnut3DSeriesView.HoleRadiusPercent Property

Gets or sets the radius of the inner circle in the Doughnut Chart.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v24.1.dll

NuGet Package: DevExpress.Charts

Declaration

C#

[XtraChartsLocalizableCategory(XtraChartsCategory.Layout)]
[XtraSerializableProperty]
public int HoleRadiusPercent { get; set; }

VB.NET

<XtraSerializableProperty>
<XtraChartsLocalizableCategory(XtraChartsCategory.Layout)>
Public Property HoleRadiusPercent As Integer

Property Value

Type	Description
Int32	An integer, representing the percentage of the inner radius to the outer radius of a 3D doughnut.

Example

The following example demonstrates how to create a ChartControl with a series of the Doughnut3DSeriesView type, set its general properties, and add this chart to a form at runtime. Before proceeding with this example, first create a Windows Forms Application in Visual Studio, and include all necessary assemblies to the References list of your project.

Then, add the following code to the Form.Load event handler.

C#

using System;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...

private void Form1_Load(object sender, EventArgs e) {
    // Create an empty chart.
    ChartControl DoughnutChart3D = new ChartControl();

    // Create a doughnut series.
    Series series1 = new Series("Doughnut Series 1", ViewType.Doughnut3D);

    // Populate the series with points.
    series1.Points.Add(new SeriesPoint("Russia", 17.0752));
    series1.Points.Add(new SeriesPoint("Canada", 9.98467));
    series1.Points.Add(new SeriesPoint("USA", 9.63142));
    series1.Points.Add(new SeriesPoint("China", 9.59696));
    series1.Points.Add(new SeriesPoint("Brazil", 8.511965));
    series1.Points.Add(new SeriesPoint("Australia", 7.68685));
    series1.Points.Add(new SeriesPoint("India", 3.28759));
    series1.Points.Add(new SeriesPoint("Others", 81.2));

    // Add the series to the chart.
    DoughnutChart3D.Series.Add(series1);

    // Adjust the value numeric options of the series.
    series1.PointOptions.ValueNumericOptions.Format = NumericFormat.Percent;
    series1.PointOptions.ValueNumericOptions.Precision = 2;

    // Adjust the view-type-specific options of the series.
    ((Doughnut3DSeriesView)series1.View).HoleRadiusPercent = 30;
    ((Doughnut3DSeriesView)series1.View).ExplodedPoints.Add(series1.Points[0]);

    // Access the diagram's options.
    ((SimpleDiagram3D)DoughnutChart3D.Diagram).RotationType = RotationType.UseAngles;
    ((SimpleDiagram3D)DoughnutChart3D.Diagram).RotationAngleX = -35;

    // Add a title to the chart and hide the legend.
    ChartTitle chartTitle1 = new ChartTitle();
    chartTitle1.Text = "3D Doughnut Chart";
    DoughnutChart3D.Titles.Add(chartTitle1);
    DoughnutChart3D.Legend.Visible = false;

    // Add the chart to the form.
    DoughnutChart3D.Dock = DockStyle.Fill;
    this.Controls.Add(DoughnutChart3D);
}

VB.NET

Imports System
Imports System.Windows.Forms
Imports DevExpress.XtraCharts
' ...

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
    ' Create an empty chart.
    Dim DoughnutChart3D As New ChartControl()

    ' Create a doughnut series.
    Dim series1 As New Series("Doughnut Series 1", ViewType.Doughnut3D)

    ' Populate the series with points.
    series1.Points.Add(New SeriesPoint("Russia", 17.0752))
    series1.Points.Add(New SeriesPoint("Canada", 9.98467))
    series1.Points.Add(New SeriesPoint("USA", 9.63142))
    series1.Points.Add(New SeriesPoint("China", 9.59696))
    series1.Points.Add(New SeriesPoint("Brazil", 8.511965))
    series1.Points.Add(New SeriesPoint("Australia", 7.68685))
    series1.Points.Add(New SeriesPoint("India", 3.28759))
    series1.Points.Add(New SeriesPoint("Others", 81.2))

    ' Add the series to the chart.
    DoughnutChart3D.Series.Add(series1)

    ' Adjust the value numeric options of the series.
    series1.PointOptions.ValueNumericOptions.Format = NumericFormat.Percent
    series1.PointOptions.ValueNumericOptions.Precision = 2

    ' Adjust the view-type-specific options of the series.
    CType(series1.View, Doughnut3DSeriesView).HoleRadiusPercent = 30
    CType(series1.View, Doughnut3DSeriesView).ExplodedPoints.Add(series1.Points(0))

    ' Access the diagram's options.
    CType(DoughnutChart3D.Diagram, SimpleDiagram3D).RotationType = RotationType.UseAngles
    CType(DoughnutChart3D.Diagram, SimpleDiagram3D).RotationAngleX = -35

    ' Add a title to the chart and hide the legend.
    Dim chartTitle1 As New ChartTitle()
    chartTitle1.Text = "3D Doughnut Chart"
    DoughnutChart3D.Titles.Add(chartTitle1)
    DoughnutChart3D.Legend.Visible = False

    ' Add the chart to the form.
    DoughnutChart3D.Dock = DockStyle.Fill
    Me.Controls.Add(DoughnutChart3D)
End Sub