wpf-6864-controls-and-libraries-charts-suite-chart-control-examples-2d-chart-types-how-to-create-a-2d-line-chart.md
The following example demonstrates how to create a 2D Line chart. To do this, it is necessary to assign the ChartControl.Diagram property to XYDiagram2D, and then add a LineSeries2D object with points to the diagram’s Diagram.Series collection.
Also, this example shows how to add a legend (showing series names) to a chart.
<Window x:Class="Line2DChart.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:Line2DChart"
Title="Window1" Height="350" Width="620">
<Grid>
<dxc:ChartControl Name="chartControl1">
<dxc:ChartControl.DataContext>
<local:ChartViewModel/>
</dxc:ChartControl.DataContext>
<dxc:ChartControl.Diagram>
<dxc:XYDiagram2D>
<dxc:XYDiagram2D.Series>
<dxc:LineSeries2D DisplayName="Day Temperature"
DataSource="{Binding DataPoints}"
ArgumentScaleType="DateTime"
ArgumentDataMember="Time"
ValueDataMember="Value"
LabelsVisibility="True"
CrosshairLabelPattern="{}{A:MMMM}: {V:f2}°C"
MarkerSize="14"
MarkerVisible="True">
<dxc:LineSeries2D.MarkerModel>
<dxc:RingMarker2DModel/>
</dxc:LineSeries2D.MarkerModel>
<dxc:LineSeries2D.Label>
<dxc:SeriesLabel TextPattern="{}{V:f1}"
dxc:MarkerSeries2D.Angle="90"
ConnectorVisible="False"/>
</dxc:LineSeries2D.Label>
</dxc:LineSeries2D>
</dxc:XYDiagram2D.Series>
</dxc:XYDiagram2D>
</dxc:ChartControl.Diagram>
<dxc:ChartControl.Legend>
<dxc:Legend HorizontalPosition="Left"/>
</dxc:ChartControl.Legend>
</dxc:ChartControl>
</Grid>
</Window>
using System;
using System.Collections.Generic;
using System.Windows;
namespace Line2DChart {
public partial class Window1 : Window {
public Window1() {
InitializeComponent();
}
}
public class ChartViewModel {
List<DataPoint> dataPoints;
public List<DataPoint> DataPoints {
get {
if (dataPoints == null) {
dataPoints = new List<DataPoint> {
new DataPoint (new DateTime(2021, 1, 1), 7.2),
new DataPoint (new DateTime(2021, 2, 1), 8.3),
new DataPoint (new DateTime(2021, 3, 1), 12.2),
new DataPoint (new DateTime(2021, 4, 1), 15.6),
new DataPoint (new DateTime(2021, 5, 1), 19.6),
new DataPoint (new DateTime(2021, 6, 1), 22.7),
new DataPoint (new DateTime(2021, 7, 1), 25.2),
new DataPoint (new DateTime(2021, 8, 1), 25),
new DataPoint (new DateTime(2021, 9, 1), 21.1),
new DataPoint (new DateTime(2021, 10, 1), 16.3),
new DataPoint (new DateTime(2021, 11, 1), 10.8),
new DataPoint (new DateTime(2021, 12, 1), 7.5)
};
}
return dataPoints;
}
}
}
public class DataPoint {
public DateTime Time { get; set; }
public double Value { get; set; }
public DataPoint(DateTime time, double value) {
this.Time = time;
this.Value = value;
}
}
}
Imports System
Imports System.Collections.Generic
Imports System.Windows
Namespace Line2DChart
Public Partial Class Window1
Inherits Window
Public Sub New()
Me.InitializeComponent()
End Sub
End Class
Public Class ChartViewModel
Private dataPointsField As List(Of DataPoint)
Public ReadOnly Property DataPoints As List(Of DataPoint)
Get
If dataPointsField Is Nothing Then
dataPointsField = New List(Of DataPoint) From {New DataPoint(New DateTime(2021, 1, 1), 7.2), New DataPoint(New DateTime(2021, 2, 1), 8.3), New DataPoint(New DateTime(2021, 3, 1), 12.2), New DataPoint(New DateTime(2021, 4, 1), 15.6), New DataPoint(New DateTime(2021, 5, 1), 19.6), New DataPoint(New DateTime(2021, 6, 1), 22.7), New DataPoint(New DateTime(2021, 7, 1), 25.2), New DataPoint(New DateTime(2021, 8, 1), 25), New DataPoint(New DateTime(2021, 9, 1), 21.1), New DataPoint(New DateTime(2021, 10, 1), 16.3), New DataPoint(New DateTime(2021, 11, 1), 10.8), New DataPoint(New DateTime(2021, 12, 1), 7.5)}
End If
Return dataPointsField
End Get
End Property
End Class
Public Class DataPoint
Public Property Time As Date
Public Property Value As Double
Public Sub New(ByVal time As Date, ByVal value As Double)
Me.Time = time
Me.Value = value
End Sub
End Class
End Namespace