How to: Bind a Pie Map Dashboard Item to Data in Code
- 2 minutes to read
The following example demonstrates how to bind a Pie Map dashboard item to data in code.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-bind-a-pie-map-dashboard-item-to-data-in-code-t119627.
using System;
using DevExpress.DashboardCommon;
using DevExpress.DataAccess.ConnectionParameters;
using DevExpress.DataAccess.Sql;
using DevExpress.XtraEditors;
namespace Dashboard_CreatePieMap {
public partial class Form1 : XtraForm {
public Form1() {
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e) {
// Creates a new dashboard and data source for this dashboard.
Dashboard dashboard = new Dashboard();
DashboardSqlDataSource xmlDataSource = new DashboardSqlDataSource();
xmlDataSource.ConnectionParameters =
new XmlFileConnectionParameters(@"..\..\Data\DashboardEnergyStatictics.xml");
SelectQuery sqlQuery = SelectQueryFluentBuilder
.AddTable("Countries")
.SelectColumns("Latitude", "Longitude", "Production", "EnergyType", "Country")
.Build("Query 1");
xmlDataSource.Queries.Add(sqlQuery);
dashboard.DataSources.Add(xmlDataSource);
// Creates a Pie Map dashboard item and specifies its data source.
PieMapDashboardItem pieMap = new PieMapDashboardItem();
pieMap.DataSource = xmlDataSource;
pieMap.DataMember = "Query 1";
// Loads the map of the europe.
pieMap.Area = ShapefileArea.Europe;
// Provides countries coordinates.
pieMap.Latitude = new Dimension("Latitude");
pieMap.Longitude = new Dimension("Longitude");
// Specifies pie values and argument.
pieMap.Values.Add(new Measure("Production"));
pieMap.Argument = new Dimension("EnergyType");
// Specifies values displayed within pie tooltips.
pieMap.TooltipDimensions.Add(new Dimension("Country"));
pieMap.Legend.Visible = true;
// Adds the Pie Map dashboard item to the dashboard and opens this
// dashboard in the Dashboard Viewer.
dashboard.Items.Add(pieMap);
dashboardViewer1.Dashboard = dashboard;
}
}
}
See Also