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  2. WinForms
  3. DocIO

How to create bubble chart in Word document using C# and VB.NET

4 mins read

What is a bubble chart?

A bubble chart represents data points with bubbles along with an additional dimension of the data, size of the bubbles. Like a scatter chart, a bubble chart does not use a category axis. Both x (horizontal) and y(vertical) axes are value axes in addition with z (size) values.

Bubble chart

Bubble chart created using Word library (Essential® DocIO)

Steps to create bubble chart in Word document using DocIO library

  1. Initialize chart

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

//Creates and Appends chart to the paragraph.
WChart chart = paragraph.AppendChart(446, 270);
//Sets chart type.
chart.ChartType = OfficeChartType.Bubble;
  1. Assign data and chart elements

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

  • ChartTitle of chart object.
  • Set DataLabels via DefaultDataPoint.
  • Add CategoryLabels and Values.
  • Set TRUE to chart’s HasLegend property to show the legend, else False.
    //Apply chart elements.
//Set chart title.
chart.ChartTitle = "Bubble Chart";
 
//Set legend.
chart.HasLegend = false;
 
//Set Datalabels, CategoryLabels, and Values.
IOfficeChartSerie serie = chart.Series.Add();
serie.CategoryLabels = chart.ChartData[2, 1, 11, 1];
serie.Values = chart.ChartData[2, 2, 11, 2];
serie.Bubbles = chart.ChartData[2, 3, 11, 3];
serie.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
serie.DataPoints.DefaultDataPoint.DataLabels.Position = OfficeDataLabelPosition.Center;

 

Applicable properties of bubble chart

  • SizeRepresents
  • BubbleScale
  • ShowNegativeBubbles

 

Note:
  • 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 bubble chart.
  • Bubbles with negative size are said to be the negative bubbles.

 

 

The following C# and VB.NET complete code snippet shows the creation of bubble chart using Word library.

C#

using Syncfusion.DocIO;
using Syncfusion.DocIO.DLS;
using Syncfusion.OfficeChart;
using System.IO;
 
namespace ChartSample
{
    class Program
    {
        static void Main(string[] args)
        {
            //Loads the template document.
            WordDocument document = new WordDocument();
            // Adds section to the document.
            IWSection sec = document.AddSection();
            //Adds paragraph to the section.
            IWParagraph paragraph = sec.AddParagraph();
            //Creates and Appends chart to the paragraph.
            WChart chart = paragraph.AppendChart(446, 270);
            //Sets chart type.
            chart.ChartType = OfficeChartType.Bubble;
 
            //Apply chart elements.
            //Set chart title.
            chart.ChartTitle = "Bubble Chart";
            //Set data to the chart
            SetChartData(chart);
 
            //Set Datalabels, CategoryLabels, and Values.
            IOfficeChartSerie serie = chart.Series.Add();
            serie.CategoryLabels = chart.ChartData[2, 1, 11, 1];
            serie.Values = chart.ChartData[2, 2, 11, 2];
            serie.Bubbles = chart.ChartData[2, 3, 11, 3];
            serie.DataPoints.DefaultDataPoint.DataLabels.IsValue = true;
            serie.DataPoints.DefaultDataPoint.DataLabels.Position = OfficeDataLabelPosition.Center;
 
            //Saves and closes the document.
            document.Save("sample.docx", FormatType.Docx);
            document.Close();
        }
 
        /// <summary>
        /// Set the values for the chart.
        /// </summary>
        /// <param name="chart">Represent the instance of the WordDocument chart</param>
        private static void SetChartData(WChart chart)
        {
            chart.ChartData.SetValue(1, 1, "X");
            chart.ChartData.SetValue(2, 1, -10);
            chart.ChartData.SetValue(3, 1, -20);
            chart.ChartData.SetValue(4, 1, -30);
            chart.ChartData.SetValue(5, 1, -40);
            chart.ChartData.SetValue(6, 1, -50);
            chart.ChartData.SetValue(7, 1, 10);
            chart.ChartData.SetValue(8, 1, 20);
            chart.ChartData.SetValue(9, 1, 30);
            chart.ChartData.SetValue(10, 1, 40);
            chart.ChartData.SetValue(11, 1, 50);
            chart.ChartData.SetValue(1, 2, "Y");
            chart.ChartData.SetValue(2, 2, -100);
            chart.ChartData.SetValue(3, 2, -200);
            chart.ChartData.SetValue(4, 2, -300);
            chart.ChartData.SetValue(5, 2, -400);
            chart.ChartData.SetValue(6, 2, -500);
            chart.ChartData.SetValue(7, 2, 100);
            chart.ChartData.SetValue(8, 2, 200);
            chart.ChartData.SetValue(9, 2, 300);
            chart.ChartData.SetValue(10, 2, 400);
            chart.ChartData.SetValue(11, 2, 500);
            chart.ChartData.SetValue(1, 3, "Size");
            chart.ChartData.SetValue(2, 3, 1);
            chart.ChartData.SetValue(3, 3, -1);
            chart.ChartData.SetValue(4, 3, 1);
            chart.ChartData.SetValue(5, 3, -1);
            chart.ChartData.SetValue(6, 3, 1);
            chart.ChartData.SetValue(7, 3, -1);
            chart.ChartData.SetValue(8, 3, 1);
            chart.ChartData.SetValue(9, 3, -1);
            chart.ChartData.SetValue(10, 3, 1);
            chart.ChartData.SetValue(11, 3, -1);
        }

 

VB

Imports Syncfusion.DocIO
Imports Syncfusion.DocIO.DLS
Imports Syncfusion.OfficeChart
 
Namespace ChartSample
    Class Program
        Private Shared Sub Main(ByVal args As String())
            'Loads the template document.
            Dim document As WordDocument = New WordDocument()
            ' Adds section to the document.
            Dim sec As IWSection = document.AddSection()
            'Adds paragraph to the section.
            Dim paragraph As IWParagraph = sec.AddParagraph()
            'Creates and Appends chart to the paragraph.
            Dim chart As WChart = paragraph.AppendChart(446, 270)
            'Sets chart type
            chart.ChartType = OfficeChartType.Bubble
 
            'Apply chart elements.
            'Set chart title.
            chart.ChartTitle = "Bubble Chart"
            'Set data to the chart.
            Program.SetChartData(chart)
 
            'Set Datalabels, CategoryLabels, and Values.
            Dim serie As IOfficeChartSerie = chart.Series.Add()
            serie.CategoryLabels = chart.ChartData(2, 1, 11, 1)
            serie.Values = chart.ChartData(2, 2, 11, 2)
            serie.Bubbles = chart.ChartData(2, 3, 11, 3)
            serie.DataPoints.DefaultDataPoint.DataLabels.IsValue = True
            serie.DataPoints.DefaultDataPoint.DataLabels.Position = OfficeDataLabelPosition.Center
 
            'Saves and closes the document.
            document.Save("sample.docx", FormatType.Docx)
            document.Close()
        End Sub
 
 
        ''' <summary>
        ''' Set the values for the chart
        ''' </summary>
        ''' <paramname="chart">Represent the instance of the WordDocument chart</param>
        Private Shared Sub SetChartData(ByVal chart As WChart)
            chart.ChartData.SetValue(1, 1, "X")
            chart.ChartData.SetValue(2, 1, -10)
            chart.ChartData.SetValue(3, 1, -20)
            chart.ChartData.SetValue(4, 1, -30)
            chart.ChartData.SetValue(5, 1, -40)
            chart.ChartData.SetValue(6, 1, -50)
            chart.ChartData.SetValue(7, 1, 10)
            chart.ChartData.SetValue(8, 1, 20)
            chart.ChartData.SetValue(9, 1, 30)
            chart.ChartData.SetValue(10, 1, 40)
            chart.ChartData.SetValue(11, 1, 50)
            chart.ChartData.SetValue(1, 2, "Y")
            chart.ChartData.SetValue(2, 2, -100)
            chart.ChartData.SetValue(3, 2, -200)
            chart.ChartData.SetValue(4, 2, -300)
            chart.ChartData.SetValue(5, 2, -400)
            chart.ChartData.SetValue(6, 2, -500)
            chart.ChartData.SetValue(7, 2, 100)
            chart.ChartData.SetValue(8, 2, 200)
            chart.ChartData.SetValue(9, 2, 300)
            chart.ChartData.SetValue(10, 2, 400)
            chart.ChartData.SetValue(11, 2, 500)
            chart.ChartData.SetValue(1, 3, "Size")
            chart.ChartData.SetValue(2, 3, 1)
            chart.ChartData.SetValue(3, 3, -1)
            chart.ChartData.SetValue(4, 3, 1)
            chart.ChartData.SetValue(5, 3, -1)
            chart.ChartData.SetValue(6, 3, 1)
            chart.ChartData.SetValue(7, 3, -1)
            chart.ChartData.SetValue(8, 3, 1)
            chart.ChartData.SetValue(9, 3, -1)
            chart.ChartData.SetValue(10, 3, 1)
            chart.ChartData.SetValue(11, 3, -1)
        End Sub
    End Class
End Namespace

 

A complete working example of how to create bubble chart in Word document in C# can be downloaded from Create-bubble-chart-in-Word.zip.

To learn more about creating charts with various settings using Syncfusion® Word library (Essential® DocIO), please refer the documentation.

An online example to create chart in Word document.

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