TimeSpanChartRangeControlClient Class

Shows time-span data within a range control’s viewport.

Namespace: DevExpress.Xpf.Charts.RangeControlClient

Assembly: DevExpress.Xpf.Charts.v24.2.dll

NuGet Package: DevExpress.Wpf.Charts

Declaration

C#
VB.NET

public class TimeSpanChartRangeControlClient :
    ChartRangeControlClient

Public Class TimeSpanChartRangeControlClient
    Inherits ChartRangeControlClient

Remarks

To display time-span data within a RangeControl, you need to assign a DateTimeChartRangeControlClient instance to the RangeControl.Client property.

Example

This example demonstrates how to use the time-span chart client for a range control to display a chart with time-span data within the range control’s viewport.

In this example, a time-span chart range control client is bound to a System.Collections.Generic.List containing DataSourceItem objects.

Each DataSourceItem object contains Argument and Value properties, to which a time-span chart range control client is bound via its ChartRangeControlClient.ArgumentDataMember and ChartRangeControlClient.ValueDataMember properties.

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:TimeSpanChartRangeControlClient"
        xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors" 
        xmlns:Custom="http://schemas.devexpress.com/winfx/2008/xaml/charts/rangecontrolclient" 
        x:Class="TimeSpanChartRangeControlClient.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <dxe:RangeControl>
            <Custom:TimeSpanChartRangeControlClient ArgumentDataMember="Argument" 
                                                    ValueDataMember="Value" 
                                                    ItemsSource="{Binding}" 
                                                    GridAlignment="Hour"
                                                    GridSpacing="8"
                                                    SnapAlignment="Hour"> 
                <Custom:TimeSpanChartRangeControlClient.View>
                    <Custom:RangeControlClientLineView ShowMarkers="True" 
                                                       MarkerSize="8"/>
                </Custom:TimeSpanChartRangeControlClient.View>
            </Custom:TimeSpanChartRangeControlClient>
        </dxe:RangeControl>
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Windows;
namespace TimeSpanChartRangeControlClient {
    public class DataSourceItem {
        public object Argument { get; set; }
        public object Value { get; set; }
    }
    public partial class MainWindow : Window {
        const int dataCount = 100;
        List<DataSourceItem> data = new List<DataSourceItem>();
        List<DataSourceItem> GenerateDateTimeData() {
            List<DataSourceItem> data = new List<DataSourceItem>();
            Random rand = new Random();
            double value = 0;
            for (int i = 0; i < dataCount; i++) {
                value += (rand.NextDouble() - 0.5);
                data.Add(new DataSourceItem() { Argument = TimeSpan.FromMinutes(i * 30),
                                                Value = Math.Abs(value + Math.Sin(i * 0.6)) });
            }
            return data;
        }
        public MainWindow() {
            InitializeComponent();
            this.DataContext = GenerateDateTimeData();
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Windows
Namespace TimeSpanChartRangeControlClient
    Public Class DataSourceItem
        Public Property Argument As Object
        Public Property Value As Object
    End Class
    Public Partial Class MainWindow
        Inherits Window
        Const dataCount As Integer = 100
        Private data As List(Of DataSourceItem) = New List(Of DataSourceItem)()
        Private Function GenerateDateTimeData() As List(Of DataSourceItem)
            Dim data As List(Of DataSourceItem) = New List(Of DataSourceItem)()
            Dim rand As Random = New Random()
            Dim value As Double = 0
            For i As Integer = 0 To dataCount - 1
                value += (rand.NextDouble() - 0.5)
                data.Add(New DataSourceItem() With {
                    .Argument = TimeSpan.FromMinutes(i * 30),
                    .Value = Math.Abs(value + Math.Sin(i * 0.6))
                })
            Next
            Return data
        End Function
        Public Sub New()
            InitializeComponent()
            Me.DataContext = GenerateDateTimeData()
        End Sub
    End Class
End Namespace