TreemapDashboardItem Class

A Treemap dashboard item that allows you to display large amounts of hierarchically structured (tree-structured) data.

Namespace: DevExpress.DashboardCommon

Assembly: DevExpress.Dashboard.v20.2.Core.dll

NuGet Packages: DevExpress.Dashboard.Core, DevExpress.WindowsDesktop.Dashboard.Core

Declaration

C#

public class TreemapDashboardItem :
    DataDashboardItem,
    IElementContainer

VB.NET

Public Class TreemapDashboardItem
    Inherits DataDashboardItem
    Implements IElementContainer

Remarks

The Treemap dashboard item can be used to visualize data in nested rectangles that are called tiles.

The following documentation is available.

• WinForms Designer - Creating a Treemap
• Web Dashboard - Creating a Treemap

Example

The following example demonstrates how to bind a Treemap dashboard item to data in code.

View Example

Form1.cs

using DevExpress.DashboardCommon;
using DevExpress.XtraEditors;

namespace DashboardViewer_Treemap {
    public partial class Form1 : XtraForm {
        public Form1() {
            InitializeComponent();

            Dashboard dashboard = new Dashboard();

            DashboardExtractDataSource dataSource = new DashboardExtractDataSource();
            dataSource.FileName = @"..\..\Data\SalesDataExtract.dat";
            dashboard.DataSources.Add(dataSource);

            TreemapDashboardItem treeMap = new TreemapDashboardItem();
            treeMap.DataSource = dataSource;
            treeMap.Values.Add(new Measure("Sales"));            
            treeMap.Arguments.Add(new Dimension { DataMember = "Product Category", GroupChildValues = true });
            treeMap.Arguments.Add(new Dimension("Product Sub-Category"));
            treeMap.LayoutAlgorithm = DashboardTreemapLayoutAlgorithm.Striped;

            dashboard.Items.Add(treeMap);
            dashboardViewer1.Dashboard = dashboard;
        }
    }
}

Form1.vb

Imports DevExpress.DashboardCommon
Imports DevExpress.XtraEditors

Namespace DashboardViewer_Treemap
    Partial Public Class Form1
        Inherits XtraForm

        Public Sub New()
            InitializeComponent()

            Dim dashboard As New Dashboard()

            Dim dataSource As New DashboardExtractDataSource()
            dataSource.FileName = "..\..\Data\SalesDataExtract.dat"
            dashboard.DataSources.Add(dataSource)

            Dim treeMap As New TreemapDashboardItem()
            treeMap.DataSource = dataSource
            treeMap.Values.Add(New Measure("Sales"))
            treeMap.Arguments.Add(New Dimension With {.DataMember = "Product Category", .GroupChildValues = True})
            treeMap.Arguments.Add(New Dimension("Product Sub-Category"))
            treeMap.LayoutAlgorithm = DashboardTreemapLayoutAlgorithm.Striped

            dashboard.Items.Add(treeMap)
            dashboardViewer1.Dashboard = dashboard
        End Sub
    End Class
End Namespace

Implements

ICustomPropertyProvider

Inheritance

Object

DashboardItem

DataDashboardItem

TreemapDashboardItem