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Pie and Doughnut charts

Pie Chart

Now, let's learn how to create a Pie chart. We will use the same data of "Most Popular Programming Language". The data will look as shown below:

Programming Language Number of Users
Java 62000
Python 46000
Javascript 38000
C++ 31000
C# 27000
PHP 14000
Perl 14000

The chart will look as shown below:

FusionCharts will load here..

Click here to edit the pie chart.

Render the Chart

Create the PieChart.aspx.cs file and do the following:

  • Include the FusionCharts.DataEngine and FusionCharts.Visualization .dll files.
  • Create DataTable.
  • Retrieve data using database query.
  • Set server name.
  • Set DataBase name.
  • Connect with DataBase using a connection string.
  • Create StaticSource using the DataTable.
  • Create an instance of DataModel class.
  • Add DataSource to the DataModel.
  • Instantiate Pie Chart.
  • Set Chart's width and height.
  • Set DataModel instance as the data source of the chart.
  • Set Chart title.
  • Finally, use a container using <div> to render the chart.

The code is shown below:


using FusionCharts.DataEngine;
using FusionCharts.Visualization;

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace FusionChartsVisualisationWebFormsSamples.Samples
{
    public partial class ThreeDChart : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            DataTable ChartData = new DataTable();
            ChartData.Columns.Add("Programming Language", typeof(System.String));
            ChartData.Columns.Add("Users", typeof(System.Double));
            ChartData.Rows.Add("Java",62000);
            ChartData.Rows.Add("Python",46000);
            ChartData.Rows.Add("Javascript",38000);
            ChartData.Rows.Add("C++",31000);
            ChartData.Rows.Add("C#",27000);
            ChartData.Rows.Add("PHP",14000);
            ChartData.Rows.Add("Perl",14000);
            // Create static source with this data table
            StaticSource source = new StaticSource(ChartData);
            // Create instance of DataModel class
            DataModel model = new DataModel();
            // Add DataSource to the DataModel
            model.DataSources.Add(source);
            // Instantiate Pie Chart
            Charts.PieChart pie = new Charts.PieChart("pie_chart");
            // Set Chart's width and height
            pie.Width.Pixel(500);
            pie.Height.Pixel(400);
            // Set DataModel instance as the data source of the chart
            pie.Data.Source = model;
            // Set Chart Title
            pie.Caption.Text = "Most popular programming language";
            //set chart sub title
            pie.SubCaption.Text = "2017-2018";
            pie.ThemeName = FusionChartsTheme.ThemeName.FUSION;
            // Render the chart to 'Literal1' literal control
            Literal1.Text = column.Render();
        }
    }
}




Imports FusionCharts.DataEngine
Imports FusionCharts.Visualization
Imports System
Imports System.Collections.Generic
Imports System.Data
Imports System.Linq
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls

Namespace FusionChartsVisualisationWebFormsSamples.Samples
    Public Partial Class ThreeDChart
        Inherits System.Web.UI.Page

        Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
            Dim ChartData As DataTable = New DataTable()
            ChartData.Columns.Add("Programming Language", GetType(System.String))
            ChartData.Columns.Add("Users", GetType(System.Double))
            ChartData.Rows.Add("Java", 62000)
            ChartData.Rows.Add("Python", 46000)
            ChartData.Rows.Add("Javascript", 38000)
            ChartData.Rows.Add("C++", 31000)
            ChartData.Rows.Add("C#", 27000)
            ChartData.Rows.Add("PHP", 14000)
            ChartData.Rows.Add("Perl", 14000)
            Dim source As StaticSource = New StaticSource(ChartData)
            Dim model As DataModel = New DataModel()
            model.DataSources.Add(source)
            Dim pie As Charts.PieChart = New Charts.PieChart("pie_chart")
            pie.Width.Pixel(500)
            pie.Height.Pixel(400)
            pie.Data.Source = model
            pie.Caption.Text = "Most popular programming language"
            pie.SubCaption.Text = "2017-2018"
            pie.ThemeName = FusionChartsTheme.ThemeName.FUSION
            Literal1.Text = column.Render()
        End Sub
    End Class
End Namespace

The .aspx template for the above sample is shown below:

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <script type="text/javascript" src="//cdn.fusioncharts.com/fusioncharts/latest/fusioncharts.js"></script>
    <script type="text/javascript" src="//cdn.fusioncharts.com/fusioncharts/latest/themes/fusioncharts.theme.fusion.js"></script>
    <form id="form1" runat="server">
        <div>
            <asp:Literal ID="Literal1" runat="server"></asp:Literal>
        </div>
        <div>
            <input type ="button" value ="Samples" onclick="location.href = 'Index.aspx';" />
        </div>
    </form>
</body>
</html>

Doughnut Chart

Now, let's learn how to create a doughnut chart with the same data. The code remains the same as that of the Pie chart. The only difference is instead of instantiating a pie chart you have to instantiate a doughnut chart. Create a doughnutChart.aspx.cs and refer to the code below:


using FusionCharts.DataEngine;
using FusionCharts.Visualization;

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace FusionChartsVisualisationWebFormsSamples.Samples
{
    public partial class ThreeDChart : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            DataTable ChartData = new DataTable();
            ChartData.Columns.Add("Programming Language", typeof(System.String));
            ChartData.Columns.Add("Users", typeof(System.Double));
            ChartData.Rows.Add("Java", 62000);
            ChartData.Rows.Add("Python", 46000);
            ChartData.Rows.Add("Javascript", 38000);
            ChartData.Rows.Add("C++", 31000);
            ChartData.Rows.Add("C#", 27000);
            ChartData.Rows.Add("PHP", 14000);
            ChartData.Rows.Add("Perl", 14000);
            // Create static source with this data table
            StaticSource source = new StaticSource(ChartData);
            // Create instance of DataModel class
            DataModel model = new DataModel();
            // Add DataSource to the DataModel
            model.DataSources.Add(source);
            // Instantiate Pie Chart
            Charts.DoughnutChart donut = new Charts.DoughnutChart("doughnut_chart");
            // Set Chart's width and height
            donut.Width.Pixel(500);
            donut.Height.Pixel(400);
            // Set DataModel instance as the data source of the chart
            donut.Data.Source = model;
            // Set Chart Title
            donut.Caption.Text = "Most popular programming language";
            //set chart sub title
            donut.SubCaption.Text = "2017-2018";
            donut.ThemeName = FusionChartsTheme.ThemeName.FUSION;
            // Render the chart to 'Literal1' literal control
            Literal1.Text = column.Render();
        }
    }
}




Imports FusionCharts.DataEngine
Imports FusionCharts.Visualization
Imports System
Imports System.Collections.Generic
Imports System.Data
Imports System.Linq
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls

Namespace FusionChartsVisualisationWebFormsSamples.Samples
    Public Partial Class ThreeDChart
        Inherits System.Web.UI.Page

        Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
            Dim ChartData As DataTable = New DataTable()
            ChartData.Columns.Add("Programming Language", GetType(System.String))
            ChartData.Columns.Add("Users", GetType(System.Double))
            ChartData.Rows.Add("Java", 62000)
            ChartData.Rows.Add("Python", 46000)
            ChartData.Rows.Add("Javascript", 38000)
            ChartData.Rows.Add("C++", 31000)
            ChartData.Rows.Add("C#", 27000)
            ChartData.Rows.Add("PHP", 14000)
            ChartData.Rows.Add("Perl", 14000)
            Dim source As StaticSource = New StaticSource(ChartData)
            Dim model As DataModel = New DataModel()
            model.DataSources.Add(source)
            Dim donut As Charts.DoughnutChart = New Charts.DoughnutChart("doughnut_chart")
            donut.Width.Pixel(500)
            donut.Height.Pixel(400)
            donut.Data.Source = model
            donut.Caption.Text = "Most popular programming language"
            donut.SubCaption.Text = "2017-2018"
            donut.ThemeName = FusionChartsTheme.ThemeName.FUSION
            Literal1.Text = column.Render()
        End Sub
    End Class
End Namespace

The .aspx template for the above sample is shown below:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <script type="text/javascript" src="//cdn.fusioncharts.com/fusioncharts/latest/fusioncharts.js"></script>
    <script type="text/javascript" src="//cdn.fusioncharts.com/fusioncharts/latest/themes/fusioncharts.theme.fusion.js"></script>
    <form id="form1" runat="server">
        <div>
            <asp:Literal ID="Literal1" runat="server"></asp:Literal>
        </div>
        <div>
            <input type ="button" value ="Samples" onclick="location.href = 'Index.aspx';" />
        </div>
    </form>
</body>
</html>

The chart will look as shown below:

FusionCharts will load here..

Click here to edit the doughnut chart.