SeriesPointFilter.Condition Property

Gets or sets the requirement to meet when filtering the series points.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v19.1.dll

Declaration

C#

[XtraSerializableProperty]
public DataFilterCondition Condition { get; set; }

VB.NET

<XtraSerializableProperty>
Public Property Condition As DataFilterCondition

Property Value

Type	Description
DataFilterCondition	A DataFilterCondition enumeration member representing a logical operator.

Available values:

Name	Description
Equal	Specifies the “equal to” comparison operator.
GreaterThan	Specifies the “greater than” comparison operator.
GreaterThanOrEqual	Specifies the “greater than or equal to” comparison operator.
LessThan	Specifies the “less than” comparison operator.
LessThanOrEqual	Specifies the “less than or equal to” comparison operator.
NotEqual	Specifies the “not equal to” comparison operator.

Remarks

Use the Condition property to specify a condition that should be satisfied to filter series points. The Condition property represents the logical operator used to compare the values of the SeriesPointFilter.Key with the filter value specified by the SeriesPointFilter.Value property. These filters can be applied to populate the ExplodedSeriesPointCollection - the collection of points to be displayed as exploded slices in the Pie and Donut Series Views.

Example

The following example demonstrates how to create a ChartControl with a series of the PieSeriesView type, and add this chart to a form at runtime.

Note that this series view type is associated with the SimpleDiagram type, and you should cast your diagram object to this type, in order to access its specific options.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-create-a-pie-chart-e1189

Form1.cs

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

namespace Series_PieChart {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

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

            // Create a pie series.
            Series series1 = new Series("A Pie Series", ViewType.Pie);

            // 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.
            pieChart.Series.Add(series1);

            // Format the the series labels.
            series1.Label.TextPattern = "{A}: {VP:p0}";

            // 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;

            // Show a title for the series.
            myView.Titles.Add(new SeriesTitle());
            myView.Titles[0].Text = series1.Name;

            // 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;
            myView.HeightToWidthRatio = 0.75;

            // Hide the legend (if necessary).
            pieChart.Legend.Visibility = DevExpress.Utils.DefaultBoolean.False;

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

Form1.vb

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

Namespace Series_PieChart
    Partial Public Class Form1
        Inherits Form

        Public Sub New()
            InitializeComponent()
        End Sub

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

            ' Create a pie series.
            Dim series1 As New Series("A Pie Series", ViewType.Pie)

            ' 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.
            pieChart.Series.Add(series1)

            ' Format the the series labels.
            series1.Label.TextPattern = "{A}: {VP:p0}"

            ' Adjust the position of series labels. 
            CType(series1.Label, PieSeriesLabel).Position = PieSeriesLabelPosition.TwoColumns

            ' Detect overlapping of series labels.
            CType(series1.Label, PieSeriesLabel).ResolveOverlappingMode = ResolveOverlappingMode.Default

            ' Access the view-type-specific options of the series.
            Dim myView As PieSeriesView = CType(series1.View, PieSeriesView)

            ' Show a title for the series.
            myView.Titles.Add(New SeriesTitle())
            myView.Titles(0).Text = series1.Name

            ' 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
            myView.HeightToWidthRatio = 0.75

            ' Hide the legend (if necessary).
            pieChart.Legend.Visibility = DevExpress.Utils.DefaultBoolean.False

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