RangeControl Class

Represents a range control.

Namespace: DevExpress.Xpf.Editors.RangeControl

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

NuGet Package: DevExpress.Wpf.Core

Declaration

C#

public class RangeControl :
    Control

VB.NET

Public Class RangeControl
    Inherits Control

Related API Members

The following members return RangeControl objects:

• RangeControl.GetOwnerRangeControl(DependencyObject)

Remarks

The RangeControl is used to select and visualize data ranges.

Run Demo: Chart Client for Range Control Run Demo: Range Control Filtering

Client Approach

The RangeControl comes with a variety of range control clients. A range control client is a special class that provides data for the RangeControl and handles data visualization. To specify the required client, use the RangeControl.Client property. The following clients are available out-of-the-box.

• DateTimeChartRangeControlClient
• TimeSpanChartRangeControlClient
• NumericChartRangeControlClient
• SchedulerRangeControlClient
• CalendarClient

To create a custom range control client, implement the IRangeControlClient interface.

Touch Support

The RangeControl supports the following touch gestures.

• Pinch and stretch (zooming in and out)
• Pan (horizontal scrolling)
• Hold and pan (moving the selection)

Navigation Buttons

The navigation buttons are automatically displayed when the selected range does not fit in the visible range. The RangeControl.ShowNavigationButtons property toggles the visibility of the navigation buttons.

Example

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

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

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

See also:

• How to: Bind a Numeric Chart Range Control Client to an Array of Simple Type Objects;
• How to: Bind a Numeric Chart Range Control Client to a List of Custom Objects.

MainWindow.xaml.vb

Imports System
Imports System.Collections.Generic
Imports System.Windows

Namespace DateTimeChartRangeControlClient

    Public Class DateTimeItem
        Public Property Argument() As Object
        Public Property Value() As Object
    End Class

    Partial Public Class MainWindow
        Inherits Window

        Private Const dataCount As Integer = 100
        Private data As New List(Of DateTimeItem)()

        Private Function GenerateDateTimeData() As List(Of DateTimeItem)
            Dim now As Date = Date.Now.Date
            Dim rand As New Random()
            Dim value As Double = 0
            For i As Integer = 0 To dataCount - 1
                now = now.AddDays(1)
                value += (rand.NextDouble() - 0.5)
                data.Add(New DateTimeItem() With {.Argument = now, .Value = value + Math.Sin(i * 0.6)})
            Next i
            Return data
        End Function

        Public Sub New()
            InitializeComponent()
            Me.DataContext = GenerateDateTimeData()
        End Sub
    End Class
End Namespace

MainWindow.xaml

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors" 
        xmlns:Custom="http://schemas.devexpress.com/winfx/2008/xaml/charts/rangecontrolclient" 
        x:Class="DateTimeChartRangeControlClient.MainWindow"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <dxe:RangeControl>
            <dxe:RangeControl.Client>
                <Custom:DateTimeChartRangeControlClient
                       ItemsSource="{Binding}" ArgumentDataMember="Argument" ValueDataMember="Value"                                                         
                       GridSpacing="4" GridAlignment="Week" >
                    <Custom:DateTimeChartRangeControlClient.View>
                        <Custom:RangeControlClientBarView/>
                    </Custom:DateTimeChartRangeControlClient.View>
                </Custom:DateTimeChartRangeControlClient>
            </dxe:RangeControl.Client>
        </dxe:RangeControl>
    </Grid>
</Window>

MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Windows;

namespace DateTimeChartRangeControlClient {

    public class DateTimeItem {
        public object Argument { get; set; }
        public object Value { get; set; }
    }

    public partial class MainWindow : Window {

        const int dataCount = 100;
        List<DateTimeItem> data = new List<DateTimeItem>();

        List<DateTimeItem> GenerateDateTimeData() {
            DateTime now = DateTime.Now.Date;
            Random rand = new Random();
            double value = 0;
            for (int i = 0; i < dataCount; i++) {
                now = now.AddDays(1);
                value += (rand.NextDouble() - 0.5);
                data.Add(new DateTimeItem() { Argument = now, Value = value + Math.Sin(i * 0.6) });
            }
            return data;
        }

        public MainWindow() {
            InitializeComponent();
            this.DataContext = GenerateDateTimeData();
        }
    }
}

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the RangeControl class.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

XAML

wpf-bind-a-range-control-to-a-chart-control/CS/GoldPrices/MainWindow.xaml#L76

</dxc:ChartControl>
<dxe:RangeControl x:Name="rangeControl"
                  Grid.Row="1"

Inheritance

Object

DispatcherObject

DependencyObject

Visual

UIElement

FrameworkElement

Control

RangeControl