How to: Configure Highlighting and Selection

• Nov 13, 2018
• 2 minutes to read

To specify end-user permissions, use the TreeMapControl.EnableHighlighting and HierarchicalChartControlBase.SelectionMode properties.

Form1.cs

using DevExpress.XtraTreeMap;
using System;
using System.Windows.Forms;

namespace HighlightingAndSelection {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e) {
            chkEnableHighlighting.Checked = treeMap.EnableHighlighting;

            lbSelectionMode.DataSource = Enum.GetValues(typeof(ElementSelectionMode));
            lbSelectionMode.SelectedValue = treeMap.SelectionMode;
        }

        private void chkEnableHighlighting_CheckedChanged(object sender, EventArgs e) {
            treeMap.EnableHighlighting = chkEnableHighlighting.Checked;
        }

        private void lbSelectionMode_SelectedIndexChanged(object sender, EventArgs e) {
            treeMap.SelectionMode = (ElementSelectionMode)lbSelectionMode.SelectedValue;
        }
    }
}

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace HighlightingAndSelection {
    static class Program {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

Form1.vb

Imports DevExpress.XtraTreeMap
Imports System
Imports System.Windows.Forms

Namespace HighlightingAndSelection
    Partial Public Class Form1
        Inherits Form

        Public Sub New()
            InitializeComponent()
        End Sub

        Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
            chkEnableHighlighting.Checked = treeMap.EnableHighlighting

            lbSelectionMode.DataSource = System.Enum.GetValues(GetType(ElementSelectionMode))
            lbSelectionMode.SelectedValue = treeMap.SelectionMode
        End Sub

        Private Sub chkEnableHighlighting_CheckedChanged(ByVal sender As Object, ByVal e As EventArgs) Handles chkEnableHighlighting.CheckedChanged
            treeMap.EnableHighlighting = chkEnableHighlighting.Checked
        End Sub

        Private Sub lbSelectionMode_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles lbSelectionMode.SelectedIndexChanged
            treeMap.SelectionMode = CType(lbSelectionMode.SelectedValue, ElementSelectionMode)
        End Sub
    End Class
End Namespace

Program.vb

Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Threading.Tasks
Imports System.Windows.Forms

Namespace HighlightingAndSelection
    Friend NotInheritable Class Program

        Private Sub New()
        End Sub

        ''' <summary>
        ''' The main entry point for the application.
        ''' </summary>
        <STAThread> _
        Shared Sub Main()
            Application.EnableVisualStyles()
            Application.SetCompatibleTextRenderingDefault(False)
            Application.Run(New Form1())
        End Sub
    End Class
End Namespace