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PieExplodeMode Enum

Lists the values used to specify the conditions to meet for a series to be represented as a spread apart pie slice(s).

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v24.1.dll

NuGet Package: DevExpress.Charts

Declaration

[ResourceFinder(typeof(XtraChartsResFinder), "PropertyNamesRes")]
[TypeConverter(typeof(ExplodeModeTypeConverter))]
public enum PieExplodeMode

Members

Name Description
None

No pie slices are exploded.

All

All pie slices are exploded.

MinValue

A pie slice for the series point with the minimum value (represented as the first item in a series point’s SeriesPoint.Values collection) is exploded. If there are several pie slices with the same minimum value, all of them are exploded.

MaxValue

A pie slice for the series point with the maximum value (represented as the first item in a series point’s SeriesPoint.Values collection) is exploded. If there are several pie slices with the same maximum value, all of them are exploded.

UsePoints

Pie slices to be exploded are contained in the collection of series points returned by the PieSeriesViewBase.ExplodedPoints property.

UseFilters

Pie slices to be exploded are specified via the collection of filters returned by the PieSeriesViewBase.ExplodedPointsFilters property.

Others

A pie slice showing the Others category is exploded. Note that this category is displayed if the TopNOptions.Enabled and the TopNOptions.ShowOthers properties are set to true.

Related API Members

The following properties accept/return PieExplodeMode values:

Library Related API Members
Cross-Platform Class Library PieSeriesViewBase.ExplodeMode
WinForms Controls PieSeriesViewBaseModel.ExplodeMode

Remarks

The values listed by the PieExplodeMode enumeration are used to set the PieSeriesViewBase.ExplodeMode property.

Example

The following example shows how to create a Pie chart at runtime.

View Example

Pie Chart

The Chart Control uses the Simple Diagram to display pies. Cast the ChartControl.Diagram property to the SimpleDiagram type to access diagram settings. The Chart Control determines the diagram type based on the series that is added first. We recommend that you access the diagram to configure its settings after at least one series is added to the chart.

To access pie series view settings, cast the SeriesBase.View property to the PieSeriesView type.

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using DevExpress.XtraCharts;

namespace Series_PieChart {
    public partial class Form1 : DevExpress.XtraEditors.XtraForm {
        public Form1() {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e) {
            // Create an empty chart.
            ChartControl pieChart = new ChartControl();

            pieChart.Titles.Add(new ChartTitle() { Text = "Land Area by Country" });

            // Create a pie series.
            Series series1 = new Series("Land Area by Country", ViewType.Pie);

            // Bind the series to data.
            series1.DataSource = DataPoint.GetDataPoints();
            series1.ArgumentDataMember = "Argument";
            series1.ValueDataMembers.AddRange(new string[] { "Value" });

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

            // Access diagram settings.
            SimpleDiagram diagram = (SimpleDiagram)pieChart.Diagram;
            diagram.Margins.All = 10;

            // Format the the series labels.
            series1.Label.TextPattern = "{VP:p0} ({V:.##}M km²)";

            // Format the series legend items.
            series1.LegendTextPattern = "{A}";

            // Adjust the position of series labels. 
            ((PieSeriesLabel)series1.Label).Position = PieSeriesLabelPosition.TwoColumns;

            // Detect overlapping of series labels.
            ((PieSeriesLabel)series1.Label).ResolveOverlappingMode = ResolveOverlappingMode.Default;

            // Access the view-type-specific options of the series.
            PieSeriesView myView = (PieSeriesView)series1.View;

            // Specify the pie rotation.
            myView.Rotation = -60;

            // Specify a data filter to explode points.
            myView.ExplodedPointsFilters.Add(new SeriesPointFilter(SeriesPointKey.Value_1,
                DataFilterCondition.GreaterThanOrEqual, 9));
            myView.ExplodedPointsFilters.Add(new SeriesPointFilter(SeriesPointKey.Argument,
                DataFilterCondition.NotEqual, "Others"));
            myView.ExplodeMode = PieExplodeMode.UseFilters;
            myView.ExplodedDistancePercentage = 30;
            myView.RuntimeExploding = true;

            // Customize the legend.
            pieChart.Legend.Visibility = DevExpress.Utils.DefaultBoolean.True;

            // Add the chart to the form.
            pieChart.Dock = DockStyle.Fill;
            this.Controls.Add(pieChart);
        }
    }
    public class DataPoint {
        public string Argument { get; set; }
        public double Value { get; set; }

        public static List<DataPoint> GetDataPoints() {
            return new List<DataPoint> {
                    new DataPoint { Argument = "Russia",    Value = 17.0752},
                    new DataPoint { Argument = "Canada",    Value = 9.98467},
                    new DataPoint { Argument = "USA",       Value = 9.63142},
                    new DataPoint { Argument = "China",     Value = 9.59696},
                    new DataPoint { Argument = "Brazil",    Value = 8.511965},
                    new DataPoint { Argument = "Australia", Value = 7.68685},
                    new DataPoint { Argument = "India",     Value = 3.28759},
                    new DataPoint { Argument = "Others",    Value = 81.2}
                };
        }
    }
}
See Also