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SeriesPointCollection Class

wpf-devexpress-dot-xpf-dot-charts-52366aaf.md

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SeriesPointCollection Class

Represents a collection that stores the data points of an individual series.

Namespace : DevExpress.Xpf.Charts

Assembly : DevExpress.Xpf.Charts.v25.2.dll

NuGet Package : DevExpress.Wpf.Charts

Declaration

csharp
[NonCategorized]
public class SeriesPointCollection :
    ChartElementCollection<SeriesPoint>,
    IList<SeriesPoint>,
    ICollection<SeriesPoint>,
    IEnumerable<SeriesPoint>,
    IEnumerable,
    IList,
    ICollection
vb
<NonCategorized>
Public Class SeriesPointCollection
    Inherits ChartElementCollection(Of SeriesPoint)
    Implements IList(Of SeriesPoint),
               ICollection(Of SeriesPoint),
               IEnumerable(Of SeriesPoint),
               IEnumerable,
               IList,
               ICollection

The following members return SeriesPointCollection objects:

Remarks

Each series represents a set of data points. A series holds its data points within its Series.Points collection, represented by the SeriesPointCollection class. The properties and methods exposed by the SeriesPointCollection class can be used to perform common collection operations such as adding new or deleting existing items. Each item of the collection is represented by a SeriesPoint object. Individual items can be accessed using indexer notation.

Data points are automatically added to a collection of the SeriesPointCollection type when a series is bound to a data source (data binding can be performed using a series’ Series.DataSource property). If a series is not bound to data, the collection of data points can be populated manually, at design time or runtime.

Example

This example shows how to create a 2D Side-by-Side Bar chart.

  1. Create a ChartControl and set its ChartControl.Diagram property to a XYDiagram2D object. Note that the ChartControl.Diagram is a content property. You can declare a diagram in XAML directly after a chart control’s declaration without wrapping it in opening and closing ChartControl.Diagram tags.

  2. Specify the Diagram.SeriesItemsSource property to bind a collection of objects used to generate series.

  3. Use the following API members to configure the x-axis options.

  4. Create a legend and customize its settings. For more information about legends, refer to the following topic: Legends

View Example: Chart for WPF - Create a 2D Side-by-Side Bar Chart

xaml
<Window x:Class="SideBySideBar2DChart.Window1" 
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts"
        xmlns:local="clr-namespace:SideBySideBar2DChart"
        Title="Window1" Height="350" Width="620">
    <Window.DataContext>
        <local:ChartViewModel/>
    </Window.DataContext>
    <Grid>
        <dxc:ChartControl Name="chartControl1">
            <dxc:ChartControl.Diagram>
                <dxc:XYDiagram2D SeriesItemsSource="{Binding Data}">
                    <dxc:XYDiagram2D.SeriesItemTemplate>
                        <DataTemplate>
                            <dxc:BarSideBySideSeries2D DisplayName="{Binding Name}" 
                                               DataSource="{Binding Values}"
                                               ArgumentDataMember="Argument"
                                               ValueDataMember="Value" 
                                               BarWidth="0.6">
                                <dxc:BarSideBySideSeries2D.Model>
                                    <dxc:BorderlessSimpleBar2DModel/>
                                </dxc:BarSideBySideSeries2D.Model>
                            </dxc:BarSideBySideSeries2D>
                        </DataTemplate>
                    </dxc:XYDiagram2D.SeriesItemTemplate>
                    <dxc:XYDiagram2D.AxisX>
                        <dxc:AxisX2D>
                            <dxc:AxisX2D.DateTimeScaleOptions>
                                <dxc:ManualDateTimeScaleOptions MeasureUnit="Year" GridAlignment="Year" 
                                                                AutoGrid="False" GridSpacing="1"/>
                            </dxc:AxisX2D.DateTimeScaleOptions>
                        </dxc:AxisX2D>
                    </dxc:XYDiagram2D.AxisX>
                </dxc:XYDiagram2D>
            </dxc:ChartControl.Diagram>
            <dxc:ChartControl.Legends>
                <dxc:Legend HorizontalPosition="Right"/>
            </dxc:ChartControl.Legends>
        </dxc:ChartControl>
    </Grid>
</Window>
csharp
using System;
using System.Collections.ObjectModel;
using System.Windows;
namespace SideBySideBar2DChart {
    public partial class Window1 : Window {
        public Window1() {
            InitializeComponent();
        }
    }
    public class ChartViewModel {
        public ObservableCollection<DataSeries> Data { get; private set; }

        public ChartViewModel() {
            Data = new ObservableCollection<DataSeries> {
                new DataSeries{
                    Name = "DevAV North",
                    Values = new ObservableCollection<DataPoint> {
                        new DataPoint (new DateTime(2013,12,31), 362.5),
                        new DataPoint (new DateTime(2014,12,31), 348.4),
                        new DataPoint (new DateTime(2015,12,31), 279.0),
                        new DataPoint (new DateTime(2016,12,31), 230.9),
                        new DataPoint (new DateTime(2017,12,31), 203.5),
                        new DataPoint (new DateTime(2018,12,31), 197.1)
                    }
                },
                new DataSeries{
                    Name = "DevAV South",
                    Values = new ObservableCollection<DataPoint> {
                        new DataPoint (new DateTime(2013,12,31), 277.0),
                        new DataPoint (new DateTime(2014,12,31), 328.5),
                        new DataPoint (new DateTime(2015,12,31), 297.0),
                        new DataPoint (new DateTime(2016,12,31), 255.3),
                        new DataPoint (new DateTime(2017,12,31), 173.5),
                        new DataPoint (new DateTime(2018,12,31), 131.8)
                    }
                }
            };
        }
        public class DataSeries {
            public string Name { get; set; }
            public ObservableCollection<DataPoint> Values { get; set; }
        }
        public class DataPoint {
            public DateTime Argument { get; set; }
            public double Value { get; set; }
            public DataPoint(DateTime argument, double value) {
                Argument = argument;
                Value = value;
            }
        }
    }
}
vb
Imports System
Imports System.Collections.ObjectModel

Namespace SideBySideBar2DChart
    Public Partial Class Window1
        Inherits Window

        Public Sub New()
            InitializeComponent()
        End Sub
    End Class

    Public Class ChartViewModel
        Private _Data As System.Collections.ObjectModel.ObservableCollection(Of SideBySideBar2DChart.ChartViewModel.DataSeries)

        Public Property Data As ObservableCollection(Of DataSeries)
            Get
                Return _Data
            End Get
            Private Set(ByVal value As ObservableCollection(Of DataSeries))
                _Data = value
            End Set
        End Property

        Public Sub New()
            Data = New ObservableCollection(Of DataSeries) From {
                New DataSeries With {
                    .Name = "DevAV North",
                    .Values = New ObservableCollection(Of DataPoint) From {
                        New DataPoint(New DateTime(2013, 12, 31), 362.5),
                        New DataPoint(New DateTime(2014, 12, 31), 348.4),
                        New DataPoint(New DateTime(2015, 12, 31), 279.0),
                        New DataPoint(New DateTime(2016, 12, 31), 230.9),
                        New DataPoint(New DateTime(2017, 12, 31), 203.5),
                        New DataPoint(New DateTime(2018, 12, 31), 197.1)
                    }
                },
                New DataSeries With {
                    .Name = "DevAV South",
                    .Values = New ObservableCollection(Of DataPoint) From {
                        New DataPoint(New DateTime(2013, 12, 31), 277.0),
                        New DataPoint(New DateTime(2014, 12, 31), 328.5),
                        New DataPoint(New DateTime(2015, 12, 31), 297.0),
                        New DataPoint(New DateTime(2016, 12, 31), 255.3),
                        New DataPoint(New DateTime(2017, 12, 31), 173.5),
                        New DataPoint(New DateTime(2018, 12, 31), 131.8)
                    }
                }
            }
        End Sub

        Public Class DataSeries
            Public Property Name As String
            Public Property Values As ObservableCollection(Of DataPoint)
        End Class

        Public Class DataPoint
            Public Property Argument As Date
            Public Property Value As Double

            Public Sub New(ByVal argument As Date, ByVal value As Double)
                Me.Argument = argument
                Me.Value = value
            End Sub
        End Class
    End Class
End Namespace

Inheritance

Object Collection<SeriesPoint> ObservableCollection<SeriesPoint> ChartDependencyObjectCollection<SeriesPoint> ChartElementCollection<SeriesPoint> SeriesPointCollection

See Also

SeriesPointCollection Members

SeriesPoint

DevExpress.Xpf.Charts Namespace