Visualizing multi‑dimensional performance data becomes much easier when you use a RadarFilled chart. In this article, we’ll show you how to create such a chart in Excel programmatically with Aspose.Cells for .NET. The example demonstrates a complete, ready‑to‑run C# program that builds a workbook, fills it with sample data, adds a RadarFilled chart, customizes its appearance, and saves the result.

This article covers the following topics:

C# Excel Library to Create RadarFilled Chart

Aspose.Cells for .NET is a comprehensive Excel manipulation library that enables developers to create, modify, and render Excel files without Microsoft Office. It provides full support for all modern chart types, including RadarFilled charts, which are useful for displaying comparative data across multiple categories.

Key advantages of using Aspose.Cells for .NET:

  • Full‑featured API – Access every Excel feature programmatically.
  • High performance – Process large workbooks with minimal memory footprint.
  • Cross‑platform – Works on .NET Framework, .NET Core, .NET 5/6/7 and .NET Standard.
  • No external dependencies – No need for Office interop or native libraries.

To start using Aspose.Cells, add the NuGet package to your project:

PM> Install-Package Aspose.Cells

Create a RadarFilled Chart in Excel using C#

Below are two complete examples. The first one shows the basic creation of a RadarFilled chart, while the second demonstrates customization (fill colors, markers, axis titles, etc.).

Basic RadarFilled Chart

Explanation

StepWhat it does
1‑2Instantiates a new workbook and obtains the first worksheet.
3Writes sample metric data into cells A1:C6.
4Inserts a RadarFilled chart positioned at rows 8‑28 and columns 0‑15.
5Adds two series – one for each car – and binds them to the corresponding data ranges.
6Saves the workbook as RadarFilledChart_Basic.xlsx.

Running the program produces an Excel file that contains a filled radar chart visualizing the two cars’ performance across the five metrics.

Customizing the RadarFilled Chart

The following example extends the basic chart by applying custom fill colors, markers, and axis titles.

What’s new in this version?

  • Custom fill colors (Area.ForegroundColor) give each series a distinct visual identity.
  • Markers (Marker.MarkerStyle and Marker.MarkerSize) highlight individual data points.
  • Axis titles add context to the radar dimensions.
  • Border removal (PlotArea.Border.IsVisible = false) creates a sleek appearance.

Feel free to tweak the color values, marker styles, or chart dimensions to match your branding.

Get a Free License

Aspose.Cells is a commercial library, but you can obtain a temporary free license for evaluation purposes. Visit the Aspose temporary license page and follow the instructions to generate a license file. Place the license file in your project directory and load it before creating any workbook:

var license = new License();
license.SetLicense("Aspose.Total.lic");

Using a license removes evaluation watermarks and unlocks the full feature set.

RadarFilled Chart Excel: Free Resources

These resources provide deeper insights, additional samples, and best‑practice recommendations for working with charts and other Excel features.

Conclusion

In this post we demonstrated how to create and customize a RadarFilled chart in Excel using C# and Aspose.Cells for .NET. The library abstracts the complexity of Excel’s internal chart model, enabling you to generate professional, export‑ready visualizations with just a few lines of code. Incorporate the examples into your reporting or analytics solutions to present multi‑dimensional data in an intuitive, visually appealing format.

If you have any questions or need further assistance, feel free to post on the Aspose.Cells support forum.

See Also