The Doughnut3DSeriesView class provides the functionality of a series view of the 3D Doughnut type within a chart control.
In addition to the common view settings inherited from the base Pie3DSeriesView class, the Doughnut3DSeriesView class declares the Doughnut type specific settings that allow you to define a percentage value for a hole radius (HoleRadiusPercent).
Note that a particular view type can be defined for a series via its SeriesBase.View property.
For more information on series views of the pie type, please see the Doughnut Chart topic.

Example
The following example demonstrates how to create a DevExpress.XtraCharts.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) {
ChartControl DoughnutChart3D = new ChartControl();
Series series1 = new Series("Doughnut Series 1", ViewType.Doughnut3D);
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));
DoughnutChart3D.Series.Add(series1);
series1.PointOptions.ValueNumericOptions.Format = NumericFormat.Percent;
series1.PointOptions.ValueNumericOptions.Precision = 2;
((Doughnut3DSeriesView)series1.View).HoleRadiusPercent = 30;
((Doughnut3DSeriesView)series1.View).ExplodedPoints.Add(series1.Points[0]);
((SimpleDiagram3D)DoughnutChart3D.Diagram).RotationType = RotationType.UseAngles;
((SimpleDiagram3D)DoughnutChart3D.Diagram).RotationAngleX = -35;
ChartTitle chartTitle1 = new ChartTitle();
chartTitle1.Text = "3D Doughnut Chart";
DoughnutChart3D.Titles.Add(chartTitle1);
DoughnutChart3D.Legend.Visible = false;
DoughnutChart3D.Dock = DockStyle.Fill;
this.Controls.Add(DoughnutChart3D);
}
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VB |
Imports System
Imports System.Windows.Forms
Imports DevExpress.XtraCharts
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
Dim DoughnutChart3D As New ChartControl()
Dim series1 As New Series("Doughnut Series 1", ViewType.Doughnut3D)
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))
DoughnutChart3D.Series.Add(series1)
series1.PointOptions.ValueNumericOptions.Format = NumericFormat.Percent
series1.PointOptions.ValueNumericOptions.Precision = 2
CType(series1.View, Doughnut3DSeriesView).HoleRadiusPercent = 30
CType(series1.View, Doughnut3DSeriesView).ExplodedPoints.Add(series1.Points(0))
CType(DoughnutChart3D.Diagram, SimpleDiagram3D).RotationType = RotationType.UseAngles
CType(DoughnutChart3D.Diagram, SimpleDiagram3D).RotationAngleX = -35
Dim chartTitle1 As New ChartTitle()
chartTitle1.Text = "3D Doughnut Chart"
DoughnutChart3D.Titles.Add(chartTitle1)
DoughnutChart3D.Legend.Visible = False
DoughnutChart3D.Dock = DockStyle.Fill
Me.Controls.Add(DoughnutChart3D)
End Sub
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