How to create Excel exploded pie chart in C#, VB.NET?
This article explains how to create an Exploded Pie Chart in Excel using Syncfusion® Excel (XlsIO) library.
What is an Exploded Pie Chart?
A simple pie chart with pie explosion can be considered as an exploded pie chart. You can change the pie explosion setting for either all slices or individual slices.
Exploded Pie Chart
To create an exploded pie chart in Excel using XlsIO, you need to do the following steps.
Steps to create an Exploded Pie Chart:
Step 1: Initialize the chart
Create a chart object by calling the worksheet.Charts.Add method and specify the chart type to the ExcelChartType.Pie_Exploded enumeration value.
C#
// Create the chart IChartShape chart = worksheet.Charts.Add(); // Set chart type to Pie_Exploded chart.ChartType = ExcelChartType.Pie_Exploded;
Step 2: Assign data
Set a range of data from the worksheet to the chart’s DataRange property. To plot the series values in columns and categories in rows, set the chart’s IsSeriesInRows property to false.
C#
// Set region of chart data chart.DataRange = worksheet["A3:B7"]; // Set chart series in column for assigned data region chart.IsSeriesInRows = false;
Step 3: Apply basic chart elements
Add the basic elements like the chart title, data labels and legend with below list of properties.
- ChartTitle of the chart object.
- Set DataLabels via DefaultDataPoint.
- Set TRUE to the chart’s HasLegend property, to show the legend.
C#
// Set chart title chart.ChartTitle = "Exploded Pie Chart"; // Set data labels IChartSerie serie1 = chart.Series[0]; serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = true; // Set legend chart.HasLegend = true; chart.Legend.Position = ExcelLegendPosition.Bottom;
Applicable properties for Exploded Pie Chart
Below is the list of other common properties applicable for exploded pie chart.
- Percent (Pie Explosion)
- First Slice Angle
- Applying properties apart from the mentioned list might throw exception or the changes will not be reflected in the output document because those properties are not related to exploded pie chart.
- In XlsIO, the default pie explosion for an exploded pie chart is 25%.
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 exploded pie 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.Pie_Exploded;
// Assign data
chart.DataRange = worksheet["A3:B7"];
chart.IsSeriesInRows = false;
// Apply chart elements
// Set chart title
chart.ChartTitle = "Exploded Pie Chart";
// Set legend
chart.HasLegend = true;
chart.Legend.Position = ExcelLegendPosition.Bottom;
// Set data labels
IChartSerie serie1 = chart.Series[0];
serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
// Positioning the chart in the worksheet
chart.TopRow = 8;
chart.LeftColumn = 1;
chart.BottomRow = 23;
chart.RightColumn = 8;
// Saving 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
Private 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.Pie_Exploded
'Assign data
chart.DataRange = worksheet("A3:B7")
chart.IsSeriesInRows = False
'Apply chart elements
'Set chart title
chart.ChartTitle = "Exploded Pie Chart"
'Set legend
chart.HasLegend = True
chart.Legend.Position = ExcelLegendPosition.Bottom
'Set data labels
Dim serie1 As IChartSerie = chart.Series(0)
serie1.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
'Positioning the chart in the worksheet
chart.TopRow = 8
chart.LeftColumn = 1
chart.BottomRow = 23
chart.RightColumn = 8
'Saving the workbook
Dim stream As Stream = File.Create("Output.xlsx")
workbook.SaveAs(stream)
End Using
End Sub
End Class
End Namespace
Take a moment to peruse the documentation where you can find basic Excel document processing options along with the features like import and export data, chart, formulas, conditional formatting, data validation, tables, pivot tables and, protect the Excel documents, and most importantly, the PDF, CSV and Image conversions with code examples.
Conclusion
I hope you enjoyed learning about How to create Excel exploded pie chart in C#, VB.NET.
You can refer to our XIsIO’s feature tour page to learn about its other groundbreaking features. Explore our UG documentation and online demos to understand how to manipulate data in Excel documents.
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