ShapeOutlineFill.SetGradientFill(ShapeGradientType, Color, Color) Method
Sets the two-color gradient fill for a drawing object’s element.
Namespace: DevExpress.Spreadsheet.Drawings
Assembly: DevExpress.Spreadsheet.v24.1.Core.dll
NuGet Package: DevExpress.Spreadsheet.Core
Declaration
Parameters
| Name | Type | Description |
|---|---|---|
| gradientType | ShapeGradientType | A ShapeGradientType enumeration value specifying the type of the gradient to be applied to a drawing object’s element. |
| firstColor | Color | A Color object that is the color at the starting point (0). |
| lastColor | Color | A Color object that is the color at the ending point (1). |
Remarks
Call the SetGradientFill method to apply a simple two-color gradient to a drawing object’s element. Use the ShapeOutlineFill.GradientFill property to adjust the settings of the applied gradient fill or add additional gradient stops to the GradientStopCollection object for a more complex gradient.
Note
Currently, the SpreadsheetControl supports only a linear gradient with two color stops at the beginning and at the end of a gradient line. Therefore, other gradient types (like radial, rectangular or path) will be displayed as a linear gradient between the starting and ending colors when you load the document in the SpreadsheetControl. However, the gradient fill settings can be accessed in code, exported in supported formats and visualized in Microsoft Excel.
Example
The example below demonstrates how to create a clustered column chart and adjust its appearance. First, add the chart title and change the font color via the ShapeTextFont.Color property. Make the plot area transparent by using the ShapeOutlineFill.SetNoFill method, and then apply the gradient fill to the chart area by utilizing the ShapeOutlineFill.SetGradientFill method. To set the picture fill for all columns in a chart, call the ShapeFill.SetPictureFill method for a series object. Finally, change the color of the primary axes by utilizing the ShapeOutlineFill.SetSolidFill method and specify the axis width via the ShapeOutline.Width property.
Worksheet worksheet = workbook.Worksheets["chartTask7"];
workbook.Worksheets.ActiveWorksheet = worksheet;
// Create a chart and specify its location.
Chart chart = worksheet.Charts.Add(ChartType.ColumnClustered, worksheet["B2:C8"]);
chart.TopLeftCell = worksheet.Cells["F2"];
chart.BottomRightCell = worksheet.Cells["N17"];
// Add and format the chart title.
chart.Title.SetValue("Countries with the largest forest area");
chart.Title.Font.Color = Color.FromArgb(0x34, 0x5E, 0x25);
// Set no fill for the plot area.
chart.PlotArea.Fill.SetNoFill();
// Apply the gradient fill to the chart area.
chart.Fill.SetGradientFill(ShapeGradientType.Linear, Color.FromArgb(0xFD, 0xEA, 0xDA), Color.FromArgb(0x77, 0x93, 0x3C));
ShapeGradientFill gradientFill = chart.Fill.GradientFill;
gradientFill.Stops.Add(0.78f, Color.FromArgb(0xB7, 0xDE, 0xE8));
gradientFill.Angle = 90;
// Set the picture fill for the data series.
chart.Series[0].Fill.SetPictureFill("Pictures\\PictureFill.png");
// Customize the axis appearance.
AxisCollection axisCollection = chart.PrimaryAxes;
foreach (Axis axis in axisCollection)
{
axis.MajorTickMarks = AxisTickMarks.None;
axis.Outline.SetSolidFill(Color.FromArgb(0x34, 0x5E, 0x25));
axis.Outline.Width = 1.25;
}
// Change the scale of the value axis.
Axis valueAxis = axisCollection[1];
valueAxis.Scaling.AutoMax = false;
valueAxis.Scaling.Max = 8000000;
valueAxis.Scaling.AutoMin = false;
valueAxis.Scaling.Min = 0;
// Specify display units for the value axis.
valueAxis.DisplayUnits.UnitType = DisplayUnitType.Thousands;
valueAxis.DisplayUnits.ShowLabel = true;
// Hide the legend.
chart.Legend.Visible = false;
Related GitHub Examples
The following code snippets (auto-collected from DevExpress Examples) contain references to the SetGradientFill(ShapeGradientType, Color, Color) method.
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.