ChartDirector 7.1 (.NET Edition)

Pie Chart with Legend (1)




This example demonstrates how to add a legend box to a pie chart. It also demonstrates alternative sector label format and rounded edge sector shading.

Source Code Listing

[Windows Forms - C# version] NetWinCharts\CSharpWinCharts\legendpie.cs
using System; using ChartDirector; namespace CSharpChartExplorer { public class legendpie : DemoModule { //Name of demo module public string getName() { return "Pie Chart with Legend (1)"; } //Number of charts produced in this demo module public int getNoOfCharts() { return 1; } //Main code for creating chart. //Note: the argument chartIndex is unused because this demo only has 1 chart. public void createChart(WinChartViewer viewer, int chartIndex) { // The data for the pie chart double[] data = {25, 18, 15, 12, 8, 30, 35}; // The labels for the pie chart string[] labels = {"Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities", "Production"}; // Create a PieChart object of size 450 x 270 pixels PieChart c = new PieChart(450, 270); // Set the center of the pie at (150, 100) and the radius to 80 pixels c.setPieSize(150, 135, 100); // add a legend box where the top left corner is at (330, 50) c.addLegend(330, 60); // modify the sector label format to show percentages only c.setLabelFormat("{percent}%"); // Set the pie data and the pie labels c.setData(data, labels); // Use rounded edge shading, with a 1 pixel white (FFFFFF) border c.setSectorStyle(Chart.RoundedEdgeShading, 0xffffff, 1); // Output the chart viewer.Chart = c; //include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", "title='{label}: US${value}K ({percent}%)'"); } } }

[Windows Forms - VB Version] NetWinCharts\VBNetWinCharts\legendpie.vb
Imports System Imports Microsoft.VisualBasic Imports ChartDirector Public Class legendpie Implements DemoModule 'Name of demo module Public Function getName() As String Implements DemoModule.getName Return "Pie Chart with Legend (1)" End Function 'Number of charts produced in this demo module Public Function getNoOfCharts() As Integer Implements DemoModule.getNoOfCharts Return 1 End Function 'Main code for creating chart. 'Note: the argument chartIndex is unused because this demo only has 1 chart. Public Sub createChart(viewer As WinChartViewer, chartIndex As Integer) _ Implements DemoModule.createChart ' The data for the pie chart Dim data() As Double = {25, 18, 15, 12, 8, 30, 35} ' The labels for the pie chart Dim labels() As String = {"Labor", "Licenses", "Taxes", "Legal", "Insurance", _ "Facilities", "Production"} ' Create a PieChart object of size 450 x 270 pixels Dim c As PieChart = New PieChart(450, 270) ' Set the center of the pie at (150, 100) and the radius to 80 pixels c.setPieSize(150, 135, 100) ' add a legend box where the top left corner is at (330, 50) c.addLegend(330, 60) ' modify the sector label format to show percentages only c.setLabelFormat("{percent}%") ' Set the pie data and the pie labels c.setData(data, labels) ' Use rounded edge shading, with a 1 pixel white (FFFFFF) border c.setSectorStyle(Chart.RoundedEdgeShading, &Hffffff, 1) ' Output the chart viewer.Chart = c 'include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", _ "title='{label}: US${value}K ({percent}%)'") End Sub End Class

[WPF - C#] NetWPFCharts\CSharpWPFCharts\legendpie.cs
using System; using ChartDirector; namespace CSharpWPFCharts { public class legendpie : DemoModule { //Name of demo module public string getName() { return "Pie Chart with Legend (1)"; } //Number of charts produced in this demo module public int getNoOfCharts() { return 1; } //Main code for creating chart. //Note: the argument chartIndex is unused because this demo only has 1 chart. public void createChart(WPFChartViewer viewer, int chartIndex) { // The data for the pie chart double[] data = {25, 18, 15, 12, 8, 30, 35}; // The labels for the pie chart string[] labels = {"Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities", "Production"}; // Create a PieChart object of size 450 x 270 pixels PieChart c = new PieChart(450, 270); // Set the center of the pie at (150, 100) and the radius to 80 pixels c.setPieSize(150, 135, 100); // add a legend box where the top left corner is at (330, 50) c.addLegend(330, 60); // modify the sector label format to show percentages only c.setLabelFormat("{percent}%"); // Set the pie data and the pie labels c.setData(data, labels); // Use rounded edge shading, with a 1 pixel white (FFFFFF) border c.setSectorStyle(Chart.RoundedEdgeShading, 0xffffff, 1); // Output the chart viewer.Chart = c; //include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", "title='{label}: US${value}K ({percent}%)'"); } } }

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\legendpie.aspx
(Click here on how to convert this code to code-behind style.)
<%@ Page Language="C#" Debug="true" %> <%@ Import Namespace="ChartDirector" %> <%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %> <!DOCTYPE html> <script runat="server"> // // Page Load event handler // protected void Page_Load(object sender, EventArgs e) { // The data for the pie chart double[] data = {25, 18, 15, 12, 8, 30, 35}; // The labels for the pie chart string[] labels = {"Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities", "Production"}; // Create a PieChart object of size 450 x 270 pixels PieChart c = new PieChart(450, 270); // Set the center of the pie at (150, 100) and the radius to 80 pixels c.setPieSize(150, 135, 100); // add a legend box where the top left corner is at (330, 50) c.addLegend(330, 60); // modify the sector label format to show percentages only c.setLabelFormat("{percent}%"); // Set the pie data and the pie labels c.setData(data, labels); // Use rounded edge shading, with a 1 pixel white (FFFFFF) border c.setSectorStyle(Chart.RoundedEdgeShading, 0xffffff, 1); // Output the chart WebChartViewer1.Image = c.makeWebImage(Chart.SVG); // Include tool tip for the chart WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", "title='{label}: US${value}K ({percent}%)'" ); } </script> <html> <head> <script type="text/javascript" src="cdjcv.js"></script> </head> <body> <chart:WebChartViewer id="WebChartViewer1" runat="server" /> </body> </html>

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\legendpie.aspx
(Click here on how to convert this code to code-behind style.)
<%@ Page Language="VB" Debug="true" %> <%@ Import Namespace="ChartDirector" %> <%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %> <!DOCTYPE html> <script runat="server"> ' ' Page Load event handler ' Protected Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) ' The data for the pie chart Dim data() As Double = {25, 18, 15, 12, 8, 30, 35} ' The labels for the pie chart Dim labels() As String = {"Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities", _ "Production"} ' Create a PieChart object of size 450 x 270 pixels Dim c As PieChart = New PieChart(450, 270) ' Set the center of the pie at (150, 100) and the radius to 80 pixels c.setPieSize(150, 135, 100) ' add a legend box where the top left corner is at (330, 50) c.addLegend(330, 60) ' modify the sector label format to show percentages only c.setLabelFormat("{percent}%") ' Set the pie data and the pie labels c.setData(data, labels) ' Use rounded edge shading, with a 1 pixel white (FFFFFF) border c.setSectorStyle(Chart.RoundedEdgeShading, &Hffffff, 1) ' Output the chart WebChartViewer1.Image = c.makeWebImage(Chart.SVG) ' Include tool tip for the chart WebChartViewer1.ImageMap = c.getHTMLImageMap("", "", _ "title='{label}: US${value}K ({percent}%)'") End Sub </script> <html> <head> <script type="text/javascript" src="cdjcv.js"></script> </head> <body> <chart:WebChartViewer id="WebChartViewer1" runat="server" /> </body> </html>

[ASP.NET MVC - Controller] NetMvcCharts\Controllers\LegendpieController.cs
using System; using System.Web.Mvc; using ChartDirector; namespace NetMvcCharts.Controllers { public class LegendpieController : Controller { // // Default Action // public ActionResult Index() { ViewBag.Title = "Pie Chart with Legend (1)"; createChart(ViewBag.Viewer = new RazorChartViewer(HttpContext, "chart1")); return View("~/Views/Shared/ChartView.cshtml"); } // // Create chart // private void createChart(RazorChartViewer viewer) { // The data for the pie chart double[] data = {25, 18, 15, 12, 8, 30, 35}; // The labels for the pie chart string[] labels = {"Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities", "Production"}; // Create a PieChart object of size 450 x 270 pixels PieChart c = new PieChart(450, 270); // Set the center of the pie at (150, 100) and the radius to 80 pixels c.setPieSize(150, 135, 100); // add a legend box where the top left corner is at (330, 50) c.addLegend(330, 60); // modify the sector label format to show percentages only c.setLabelFormat("{percent}%"); // Set the pie data and the pie labels c.setData(data, labels); // Use rounded edge shading, with a 1 pixel white (FFFFFF) border c.setSectorStyle(Chart.RoundedEdgeShading, 0xffffff, 1); // Output the chart viewer.Image = c.makeWebImage(Chart.SVG); // Include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("", "", "title='{label}: US${value}K ({percent}%)'"); } } }

[ASP.NET MVC - View] NetMvcCharts\Views\Shared\ChartView.cshtml
@{ Layout = null; } <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>@ViewBag.Title</title> <style> @ViewBag.Style </style> @Scripts.Render("~/Scripts/cdjcv.js") </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> @ViewBag.Title </div> <hr style="border:solid 1px #000080; background:#000080" /> <div> @{ if (ViewBag.Viewer is Array) { // Display multiple charts for (int i = 0; i < ViewBag.Viewer.Length; ++i) { @:@Html.Raw(ViewBag.Viewer[i].RenderHTML()) } } else { // Display one chart only @:@Html.Raw(ViewBag.Viewer.RenderHTML()) } } </div> </body> </html>