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Scale.StartValue Property

Gets or sets the start value of the scale.

Namespace: DevExpress.Xpf.Gauges

Assembly: DevExpress.Xpf.Gauges.v22.2.dll

NuGet Package: DevExpress.Wpf.Gauges

Declaration

public double StartValue { get; set; }

Property Value

Type Description
Double

A Double value which is a scale start.

Remarks

Use the StartValue and Scale.EndValue properties to specify the scale range.

Note that the StartValue can be either less than EndValue or greater than EndValue - both situations are correct. The table below illustrates this behavior.

StartValue = -50, EndValue = 50 StartValue = 50, EndValue = -50
Scale_EndValue greater StartValue Scale_StartValue greater EndValue

Example

This example illustrates how to create a CircularGaugeControl instance with a single ArcScale object.

View Example

<Window x:Class="DXGauges_Circular.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxga="http://schemas.devexpress.com/winfx/2008/xaml/gauges"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <dxga:CircularGaugeControl Name="circularGaugeControl1" >
            <dxga:CircularGaugeControl.Model>
                <dxga:CircularRedClockModel />
            </dxga:CircularGaugeControl.Model>
            <dxga:CircularGaugeControl.Scales>
                <dxga:ArcScale StartValue="0" EndValue="12" 
                               StartAngle="-90" EndAngle="270"
                               MajorIntervalCount="12" MinorIntervalCount="5">
                    <dxga:ArcScale.LabelOptions>
                        <dxga:ArcScaleLabelOptions ShowFirst="False" Orientation="LeftToRight" />
                    </dxga:ArcScale.LabelOptions>
                    <dxga:ArcScale.Needles>
                        <dxga:ArcScaleNeedle Value="3" />
                        <dxga:ArcScaleNeedle Value="12" />
                    </dxga:ArcScale.Needles>
                    <dxga:ArcScale.Markers>
                        <dxga:ArcScaleMarker Value="7" />
                    </dxga:ArcScale.Markers>
                    <dxga:ArcScale.RangeBars>
                        <dxga:ArcScaleRangeBar AnchorValue="7" Value="3" />
                    </dxga:ArcScale.RangeBars>
                    <dxga:ArcScale.Layers>
                        <dxga:ArcScaleLayer />
                    </dxga:ArcScale.Layers>
                    <dxga:ArcScale.Ranges>
                        <dxga:ArcScaleRange StartValue="0" EndValue="4" />
                        <dxga:ArcScaleRange StartValue="4" EndValue="8" />
                        <dxga:ArcScaleRange StartValue="8" EndValue="12" />
                    </dxga:ArcScale.Ranges>
                </dxga:ArcScale>
            </dxga:CircularGaugeControl.Scales>
        </dxga:CircularGaugeControl>
    </Grid>
</Window>

The following code snippets (auto-collected from DevExpress Examples) contain references to the StartValue property.

Note

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See Also