How to create pie of pie chart in Word document using C#?

3 mins read

Syncfusion Essential DocIO is a .NET Core Word library used to create, read, and edit Word documents programmatically without Microsoft Word or Interop dependencies. Using this library, you can create pie of pie chart in Word document in C#.

What is pie of pie chart?

Pie of pie chart make small slices of a pie chart easier to see. This chart type separates the smaller slices from the main pie chart and display them in a secondary pie chart.

Pie of pie chart in ASP.NET Core DocIO

Pie of Pie chart in Word document

Steps to create pie of pie chart in Word document:

Step 1: Initialize chart

Create a chart object by calling the paragraph.AppendChart(446,270) method and specify the chart type to the OfficeChartType.PieOfPie enum value.

//Create and append the chart to the paragraph.
WChart chart = paragraph.AppendChart(446, 270);
//Set chart type.
chart.ChartType = OfficeChartType.PieOfPie;

Step 2: Assign data and chart elements

Add the basic elements like the chart title, data labels and legend.

Assign data.
ChartTitle of the chart object.
Set DataLabels using the DefaultDataPoint.
Set TRUE to the chart’s HasLegend property to show the legend, else False.

//Set region of Chart data.
chart.DataRange = chart.ChartData[2, 1, 7, 2];
 
//Apply the chart elements.
//Set a chart title.
chart.ChartTitle = "Pie of Pie Chart";
 
//Set Datalabels.
IOfficeChartSerie serie = chart.Series[0];
serie.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
 
//Set legend.
chart.HasLegend = true;
chart.Legend.Position = OfficeLegendPosition.Bottom;

Applicable properties for pie of pie chart

Below is a list of other common properties applicable for pie of pie chart.

SplitType
SplitValue
Percent (Pie Explosion)
PieSecondSize
GapWidth
IsVaryColor
Note:
Applying the properties apart from the mentioned list might throw an exception, or the changes will not be reflected in the output document because those properties are not related to pie of pie chart.

The following C# code sample shows the creation of pie of pie chart using the Word library.

//Create a new Word document.
using (WordDocument document = new WordDocument())
{
    //Add a section to the document.
    IWSection section = document.AddSection();
    //Add a paragraph to the section.
    IWParagraph paragraph = section.AddParagraph();
    //Create and append the chart to the paragraph.
    WChart chart = paragraph.AppendChart(446, 270);
    //Set chart type.
    chart.ChartType = OfficeChartType.PieOfPie;
    //Set chart data.
    chart.ChartData.SetValue(2, 1, "Food");
    chart.ChartData.SetValue(3, 1, "Fruits");
    chart.ChartData.SetValue(4, 1, "Vegetables");
    chart.ChartData.SetValue(5, 1, "Dairy");
    chart.ChartData.SetValue(6, 1, "Protein");
    chart.ChartData.SetValue(7, 1, "Grains");
    chart.ChartData.SetValue(2, 2, "Percentage");
    chart.ChartData.SetValue(3, 2, 36);
    chart.ChartData.SetValue(4, 2, 14);
    chart.ChartData.SetValue(5, 2, 13);
    chart.ChartData.SetValue(6, 2, 28);
    chart.ChartData.SetValue(7, 2, 9);
    //Set region of Chart data.
    chart.DataRange = chart.ChartData[2, 1, 7, 2];
    //Set chart series in the column for assigned data region.
    chart.IsSeriesInRows = false;
    //Set a Chart Title.
    chart.ChartTitle = "Pie of Pie Chart";
    //Set Datalabels.
    IOfficeChartSerie serie = chart.Series[0];
 
    serie.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
    //Set legend.
    chart.HasLegend = true;
    chart.Legend.Position = OfficeLegendPosition.Bottom;
    //Create a file stream.
    using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"../../../Sample.docx"), FileMode.Create, FileAccess.ReadWrite))
    {
        //Save the Word document to the file stream.
        document.Save(outputFileStream, FormatType.Docx);
    }
}

A complete working sample of how to create pie of pie chart in Word document in C# can be downloaded from GitHub.

Take a moment to peruse the documentation, where you can find basic Word document processing options along with the features like mail merge, merge and split documents, find and replace text in the Word document, protect the Word documents, and most importantly, the PDF and Image conversions with code examples.

Explore more about the rich set of Syncfusion Word Framework features and an online example to create a chart in a Word document.