21.2
21.1
20.2
20.1
19.2
19.1
18.2
18.1
17.2

# ArcScale.StartAngle Property

Gets or sets the angle that specifies the scale start position.

Namespace: DevExpress.Xpf.Gauges

Assembly: DevExpress.Xpf.Gauges.v21.2.dll

## Declaration

public double StartAngle { get; set; }

## Property Value

Type Description
Double

A Double value that is the start angle of the scale.

## Remarks

A scale’s start and end positions are defined by the StartAngle and ArcScale.EndAngle properties. In this case, an angle increases in the clockwise direction and decreases in a counterclockwise one.

The following images illustrate this behavior:

StartAngle= 0, EndAngle= -270 StartAngle= -90, EndAngle = -270 StartAngle= -180, EndAngle = -270

Note that the StartAngle property can be either less than the EndAngle or greater than the EndAngle - both situations are correct.

StartAngle= 180, EndAngle= 0 StartAngle= 0, EndAngle= 180

## Example

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

<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>