ArcScaleNeedleCollection Class

A collection that stores the needles of a particular arc scale.

Namespace: DevExpress.UI.Xaml.Gauges

Assembly: DevExpress.UI.Xaml.Gauges.v18.2.dll

Declaration

public class ArcScaleNeedleCollection :
    ArcScaleIndicatorCollection<ArcScaleNeedle>,
    IOwnedElement
Public Class ArcScaleNeedleCollection
    Inherits ArcScaleIndicatorCollection(Of ArcScaleNeedle)
    Implements IOwnedElement

Each arc scale can hold a collection of needles returned by the ArcScale.Needles property and represented by the ArcScaleNeedleCollection class. Each collection item is an instance of the ArcScaleNeedle class and can be accessed via the Item[Int32] property of an ArcScaleNeedleCollection object.

For more information on needles, refer to the Needle (Circular Scale) document.

Examples

The following example demonstrates how to create a Circular Gauge with two needles, three ranges, one marker and one range bar.

<Page

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:CircularGaugeLesson"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:Gauges="using:DevExpress.UI.Xaml.Gauges"
    x:Class="CircularGaugeLesson.MainPage"
    mc:Ignorable="d">

    <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">

        <Gauges:CircularGauge>
            <Gauges:ArcScale StartValue="0" EndValue="12"
                             StartAngle="-90" EndAngle="270"
                             MajorIntervalCount="12" MinorIntervalCount="5">
                <Gauges:ArcScale.Ranges>    
                    <Gauges:ArcScaleRange StartValue="0" EndValue="4"/>
                    <Gauges:ArcScaleRange EndValue="8" StartValue="4"/>
                    <Gauges:ArcScaleRange EndValue="12" StartValue="8"/>
                </Gauges:ArcScale.Ranges>
                <Gauges:ArcScale.RangeBars>
                    <Gauges:ArcScaleRangeBar AnchorValue="7" Value="3"/>
                </Gauges:ArcScale.RangeBars>
                <Gauges:ArcScale.Markers>
                    <Gauges:ArcScaleMarker Value="7"/>
                </Gauges:ArcScale.Markers>
                <Gauges:ArcScale.Needles>
                    <Gauges:ArcScaleNeedle Value="3"/>
                    <Gauges:ArcScaleNeedle Value="12"/>
                </Gauges:ArcScale.Needles>
                <Gauges:ArcScale.LabelOptions>
                    <Gauges:ArcScaleLabelOptions ShowFirst="False"/>
                </Gauges:ArcScale.LabelOptions>
            </Gauges:ArcScale>
        </Gauges:CircularGauge>

    </Grid>
</Page>

See Also