.NET Framework 4.5.2+
.NET Framework 4.5.2+
.NET Standard 2.0+

TrendlineLabel Interface

A label displayed on a trendline.

Namespace: DevExpress.Spreadsheet.Charts

Assembly: DevExpress.Spreadsheet.v21.2.Core.dll

Declaration

public interface TrendlineLabel :
    ShapeFormat,
    ShapeFormatBase,
    ShapeTextFormat

Remarks

To display a trendline label, you have to set the Trendline.DisplayEquation or the Trendline.DisplayRSquare property to true.

The TrendlineLabel object is exposed by the Trendline.Label property.

The code snippet below illustrates how to format and position a trendline label.

Worksheet worksheet = workbook.Worksheets["chartTask3"];
workbook.Worksheets.ActiveWorksheet = worksheet;

// Create a chart and specify its location.
Chart chart = worksheet.Charts.Add(ChartType.ScatterMarkers);
chart.SelectData(worksheet["C2:F3"], ChartDataDirection.Row);
chart.TopLeftCell = worksheet.Cells["H2"];
chart.BottomRightCell = worksheet.Cells["N14"];

// Display a polynomial trendline.
chart.Series[0].Trendlines.Add(ChartTrendlineType.Polynomial);

// Customize the trendline.
Trendline tline = chart.Series[0].Trendlines[0];
tline.DisplayEquation = true;
tline.CustomName = "Trend";
tline.DisplayRSquare = true;
tline.Outline.SetSolidFill(Color.Red);

// Format the trend label.
TrendlineLabel tlabel = tline.Label;
tlabel.Font.Name = "Tahoma";
tlabel.Font.Italic = true;
tlabel.Fill.SetGradientFill(ShapeGradientType.Linear, Color.Orange, Color.White);
// Position the label in the right quarter of the chart area.
tlabel.Layout.Left.SetPosition(LayoutMode.Edge, 0.75);

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

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