Trend Lines

• May 28, 2021

A Trend Line is an indicator presented by a line drawn through two data points of a series.

How to Add a Trend Line to a Chart

The following markup shows how to add two trend lines to a chart:

XAML

<dxc:StockSeries2D.Indicators>
    <dxc:TrendLine x:Name="trendLine1"
                Argument1="6/26/2016"
                ValueLevel1="High"
                Argument2="7/31/2016"
                ValueLevel2="High"
                ExtrapolateToInfinity="False"
                LegendText="Resistance Trend Line"
                ShowInLegend="True"/>
    <dxc:TrendLine x:Name="trendLine2"
                Argument1="6/1/2016"
                ValueLevel1="Low"
                Argument2="6/26/2016"
                ValueLevel2="Low"                 
                LegendText="Support Trend Line"
                ShowInLegend="True"/>
</dxc:StockSeries2D.Indicators>

The table lists classes and properties required to draw trend lines:

Class or Property	Description
XYSeries2D.Indicators	The series collection of indicators.
TrendLine	A trend line.
FinancialIndicator.Argument1	The argument of the first point.
FinancialIndicator.ValueLevel1	The value level of the first point.
FinancialIndicator.Argument2	The argument of the second point.
FinancialIndicator.ValueLevel2	The value level of the second point.
TrendLine.ExtrapolateToInfinity	Specifies whether the trend line is extrapolated to infinity.
Indicator.LegendText	Text that is displayed with an indicator’s marker in a legend.
Indicator.ShowInLegend	Specifies whether an indicator is represented in a legend.

Tip

Set the Indicator.Visible property to false when you need to hide a trend line on a chart without its removal from the Indicators collection.

Note

To learn more about the common indicator settings, examine the Indicators help document.