How to create doughnut chart in Word document using C#?

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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 doughnut chart in Word document in C#.

What is doughnut chart?

Just like a pie chart, a doughnut chart shows the relationship of parts to a whole, but a doughnut chart can contain more than one data series. Each data series that you plot in a doughnut chart adds a ring to the chart. The first data series is displayed in the center of the chart.

Doughnut chart in .NET Core

Doughnut chart in Word document

Steps to create doughnut 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.Doughnut enum value.

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

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[1, 1, 7, 3];
 
//Apply the chart elements.
//Set a chart title.
chart.ChartTitle = "Doughnut Chart";
 
//Set Datalabels.
IOfficeChartSerie series1 = chart.Series[0];
series1.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
 
//Set legend.
chart.HasLegend = true;
chart.Legend.Position = OfficeLegendPosition.Bottom;

Applicable properties for doughnut chart

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

Percent (Doughnut Explosion)
First Slice Angle
DoughnutHoleSize
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 doughnut chart.

The following C# code sample shows the creation of doughnut 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.Doughnut;
    //Set chart data.
    chart.ChartData.SetValue(1, 1, "Company");
    chart.ChartData.SetValue(2, 1, "Company A");
    chart.ChartData.SetValue(3, 1, "Company B");
    chart.ChartData.SetValue(4, 1, "Company C");
    chart.ChartData.SetValue(5, 1, "Company D");
    chart.ChartData.SetValue(6, 1, "Company E");
    chart.ChartData.SetValue(7, 1, "Others");
    chart.ChartData.SetValue(1, 2, "2016");
    chart.ChartData.SetValue(2, 2, 28);
    chart.ChartData.SetValue(3, 2, 5);
    chart.ChartData.SetValue(4, 2, 17);
    chart.ChartData.SetValue(5, 2, 18);
    chart.ChartData.SetValue(6, 2, 17);
    chart.ChartData.SetValue(7, 2, 15);
    chart.ChartData.SetValue(1, 3, "2017");
    chart.ChartData.SetValue(2, 3, 25);
    chart.ChartData.SetValue(3, 3, 9);
    chart.ChartData.SetValue(4, 3, 19);
    chart.ChartData.SetValue(5, 3, 22);
    chart.ChartData.SetValue(6, 3, 15);
    chart.ChartData.SetValue(7, 3, 10);
    //Set region of Chart data.
    chart.DataRange = chart.ChartData[1, 1, 7, 3];
    //Set chart series in the column for assigned data region.
    chart.IsSeriesInRows = false;
    //Set a Chart Title.
    chart.ChartTitle = "Doughnut Chart";
    //Set Datalabels.
    IOfficeChartSerie series1 = chart.Series[0];
    IOfficeChartSerie series2 = chart.Series[1];
 
    series1.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
    series2.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 doughnut 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.