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TrendLine.ExtrapolateToInfinity Property

Specifies whether the Trend Line is extrapolated to infinity.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v24.1.dll

NuGet Package: DevExpress.Charts

Declaration

[TypeConverter(typeof(BooleanTypeConverter))]
[XtraChartsLocalizableCategory(XtraChartsCategory.Behavior)]
[XtraSerializableProperty]
public bool ExtrapolateToInfinity { get; set; }

Property Value

Type Description
Boolean

true if the Trend Line is extrapolated to infinity; otherwise, false.

Remarks

The following images demonstrate the use of the ExtrapolateToInfinity property.

ExtrapolateToInfinity = false ExtrapolateToInfinity = true
ExtrapolateToInfinity_false ExtrapolateToInfinity_true

For more information, refer to Trend Lines.

Example

This example demonstrates how a Trend Line can be added to a series’ collection of indicators at runtime.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/winforms-chart-add-a-trend-line

using System;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...
        private void Form1_Load (object sender, EventArgs e) {
            // Create an empty chart.
            ChartControl stockChart = new ChartControl();

            // Create a stock series, add it to the chart and set its properties.
            Series series1 = new Series("Series 1", ViewType.Stock);
            stockChart.Series.Add(series1);
            series1.ArgumentScaleType = ScaleType.DateTime;
            series1.ValueScaleType = ScaleType.Numerical;

            // Add points to the series.
            series1.Points.Add(new SeriesPoint(new DateTime(1994, 3, 1),
                new object[] { 4.00, 5.00, 5.00, 4.85 }));
            series1.Points.Add(new SeriesPoint(new DateTime(1994, 3, 2),
                new object[] { 6.05, 8.05, 6.05, 7.05 }));
            series1.Points.Add(new SeriesPoint(new DateTime(1994, 3, 3),
                new object[] { 6.25, 8.25, 6.75, 7.15 }));

            // Create and customize a trendline, 
            TrendLine trendline1 = new TrendLine("A Trend");
            trendline1.Point1.Argument = new DateTime(1994, 3, 1);
            trendline1.Point1.ValueLevel = ValueLevel.High;
            trendline1.Point2.Argument = new DateTime(1994, 3, 3);
            trendline1.Point2.ValueLevel = ValueLevel.High;
            trendline1.ExtrapolateToInfinity = false;
            trendline1.Color = Color.Red;
            trendline1.LineStyle.DashStyle = DashStyle.Dash;


            // Cast the view type of the series to the Stock view.
            StockSeriesView myView = ((StockSeriesView)series1.View);

            // Define the Y-axis range.
            myView.AxisY.WholeRange.AlwaysShowZeroLevel = false;

            // Add the trendline to the series collection of indicators.
            myView.Indicators.Add(trendline1);

            // Add the chart to the form.
            stockChart.Dock = DockStyle.Fill;
            this.Controls.Add(stockChart);
        }

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

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.

See Also