How to create WinForms Excel sunburst chart in C#, VB.NET?
This article explains how to create a sunburst chart in Excel using Syncfusion Excel (XlsIO) library.
What is a sunburst chart?
Sunburst provides a hierarchical view of data where each level of the hierarchy is represented by one ring or circle with the innermost circle as the top of the hierarchy.
Sunburst Chart
To create a sunburst chart in Excel using XlsIO, you need to do the following steps.
Steps to create sunburst chart:
Step 1: Initialize chart
Create a chart object by calling the worksheet.Charts.Add method and specify the chart type to ExcelChartType.SunBurst enum value.
C#
//Create the chart IChartShape chart = worksheet.Charts.Add(); //Set chart type to SunBurst chart.ChartType = ExcelChartType.SunBurst;
Step 2: Assign data
Set a range of data from the worksheet to chart’s DataRange property. To plot the series values in column and categories in row, set chart’s IsSeriesInRows property to false.
C#
//Set region of Chart data chart.DataRange = worksheet["A1:D16"]; //Set chart series in column for assigned data region chart.IsSeriesInRows = false;
Step 3: Apply basic chart elements
Add the basic elements like chart title, data labels and legend with the below list of properties.
- ChartTitle of chart object.
- Set DataLabels via DefaultDataPoint.
- Set TRUE to chart’s HasLegend property, to show the legend.
C#
//Apply chart elements //Set Chart Title chart.ChartTitle = "Sunburst Chart"; //Set Legend chart.HasLegend = false; //Set Datalabels IChartSerie serie1 = chart.Series[0]; serie1.DataPoints.DefaultDataPoint.DataLabels.IsCategoryName = true;
Applicable properties of sunburst chart
- Applying other properties unrelated to this chart might throw exception or the changes will not be reflected in the output document because those properties are not related to sunburst chart.
- As sunburst chart is introduced in MS Excel 2016, it can’t be viewed in MS Excel 2013 and its earlier versions.
To know more about creating charts with various settings using Syncfusion Excel (XlsIO) library, please refer the documentation.
The following C#/ VB.NET complete code snippet shows the creation of sunburst chart using XlsIO.
C#
using Syncfusion.XlsIO;
using System.Reflection;
using System.IO;
namespace ChartSample
{
class Program
{
static void Main(string[] args)
{
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
application.DefaultVersion = ExcelVersion.Excel2016;
//Open existing workbook with data entered
Assembly assembly = typeof(Program).GetTypeInfo().Assembly;
Stream fileStream = assembly.GetManifestResourceStream("ChartSample.InputTemplate.xlsx");
IWorkbook workbook = application.Workbooks.Open(fileStream);
IWorksheet worksheet = workbook.Worksheets[0];
//Initialize chart
IChartShape chart = worksheet.Charts.Add();
chart.ChartType = ExcelChartType.SunBurst;
//Assign data
chart.DataRange = worksheet["A1:D16"];
chart.IsSeriesInRows = false;
//Apply chart elements
//Set Chart Title
chart.ChartTitle = "Sunburst Chart";
//Set Datalabels
IChartSerie serie1 = chart.Series[0];
serie1.DataPoints.DefaultDataPoint.DataLabels.IsCategoryName = true;
//Set Legend
chart.HasLegend = false;
//Positioning the chart in the worksheet
chart.TopRow = 8;
chart.LeftColumn = 1;
chart.BottomRow = 23;
chart.RightColumn = 8;
//Saving and closing the workbook
Stream stream = File.Create("Output.xlsx");
workbook.SaveAs(stream);
}
}
}
}
VB.NET
Imports Syncfusion.XlsIO
Imports System.Reflection
Imports System.IO
Namespace ChartSample
Class Program
Public Shared Sub Main(ByVal args As String())
Using excelEngine As ExcelEngine = New ExcelEngine()
Dim application As IApplication = excelEngine.Excel
application.DefaultVersion = ExcelVersion.Excel2016
'Open existing workbook with data entered
Dim assembly As Assembly = GetType(Program).GetTypeInfo.Assembly
Dim fileStream As Stream = assembly.GetManifestResourceStream("ChartSample.InputTemplate.xlsx")
Dim workbook As IWorkbook = application.Workbooks.Open(fileStream)
Dim worksheet As IWorksheet = workbook.Worksheets(0)
'Initialize chart
Dim chart As IChartShape = worksheet.Charts.Add
chart.ChartType = ExcelChartType.SunBurst
'Assign data
chart.DataRange = worksheet("A1:D16")
chart.IsSeriesInRows = False
'Apply chart elements
'Set Chart Title
chart.ChartTitle = "SunBurst Chart"
'Set Datalabels
Dim serie1 As IChartSerie = chart.Series(0)
serie1.DataPoints.DefaultDataPoint.DataLabels.IsCategoryName = True
'Set Legend
chart.HasLegend = False
'Positioning the chart in the worksheet
chart.TopRow = 8
chart.LeftColumn = 1
chart.BottomRow = 23
chart.RightColumn = 8
'Saving and closing the workbook
Dim stream As Stream = File.Create("Output.xlsx")
workbook.SaveAs(stream)
End Sub
End Class
End Namespace
Conclusion
I hope you enjoyed learning about how to create WinForms Excel sunburst chart in C#, VB.NET.
You can refer to our WinForms Excel feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our WinForms Excel example to understand how to create and manipulate data.
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