TreeListNode(Object) Constructor

Initializes a new instance of the TreeListNode class with the specified content.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v24.2.dll

NuGet Package: DevExpress.Wpf.Grid.Core

Declaration

C#

public TreeListNode(
    object content
)

VB.NET

Public Sub New(
    content As Object
)

Parameters

Name	Type	Description
content	Object	An object that specifies the node’s content. This value is assigned to the TreeListNodeBase.Content property.

Example

This example creates a TreeListView that operates in unbound mode without a data source.

View Example: Create an Unbound Tree

In XAML

XAML

<dxg:GridControl>
    <dxg:GridColumn FieldName="Name"/>
    <dxg:GridColumn FieldName="Executor"/>
    <dxg:GridColumn FieldName="State"/>
    <dxg:GridControl.View>
        <dxg:TreeListView x:Name="view" AutoWidth="True" AutoExpandAllNodes="True">
            <dxg:TreeListView.Nodes>
                <dxg:TreeListNode>
                    <dxg:TreeListNode.Content>
                        <local:ProjectObject Name="Project: Betaron" Executor="Destiny Tabisola"/>
                    </dxg:TreeListNode.Content>
                    <dxg:TreeListNode.Nodes>
                        <dxg:TreeListNode>
                            <dxg:TreeListNode.Content>
                                <local:StageObject Name="Development" Executor="Kairra Hogg"/>
                            </dxg:TreeListNode.Content>
                            <dxg:TreeListNode.Nodes>
                                <dxg:TreeListNode>
                                    <dxg:TreeListNode.Content>
                                        <local:TaskObject Name="Coding" Executor="Sabato Durley" State="Not Started"/>
                                    </dxg:TreeListNode.Content>
                                </dxg:TreeListNode>
                            </dxg:TreeListNode.Nodes>
                        </dxg:TreeListNode>
                    </dxg:TreeListNode.Nodes>
                </dxg:TreeListNode>
            </dxg:TreeListView.Nodes>
        </dxg:TreeListView>
    </dxg:GridControl.View>
</dxg:GridControl>

C#

public class ProjectObject {
    public string Name { get; set; }
    public string Executor { get; set; }
}

public class StageObject : ProjectObject { }

public class TaskObject : ProjectObject {
    public string State { get; set; }
}

VB.NET

Public Class ProjectObject

    Public Property Name As String

    Public Property Executor As String
End Class

Public Class StageObject
    Inherits ProjectObject

End Class

Public Class TaskObject
    Inherits ProjectObject

    Public Property State As String
End Class

In Code

XAML

<dxg:GridControl>
    <dxg:GridColumn FieldName="Name"/>
    <dxg:GridColumn FieldName="Executor"/>
    <dxg:GridColumn FieldName="State"/>
    <dxg:GridControl.View>
        <dxg:TreeListView x:Name="view" AutoWidth="True" AutoExpandAllNodes="True"/>
    </dxg:GridControl.View>
</dxg:GridControl>

C#

public partial class MainWindow : Window {
    public MainWindow() {
        // ...
        BuildTree();
    }

    private void BuildTree() {
        TreeListNode rootNode = CreateRootNode(new ProjectObject() { Name = "Project: Stanton", Executor = "Nicholas Llams" });
        TreeListNode childNode = CreateChildNode(rootNode, new StageObject() { Name = "Information Gathering", Executor = "Ankie Galva" });
        CreateChildNode(childNode, new TaskObject() { Name = "Design", Executor = "Reardon Felton", State = "In progress" });
    }

    private TreeListNode CreateRootNode(object dataObject) {
        TreeListNode rootNode = new TreeListNode(dataObject);
        view.Nodes.Add(rootNode);
        return rootNode;
    }

    private TreeListNode CreateChildNode(TreeListNode parentNode, object dataObject) {
        TreeListNode childNode = new TreeListNode(dataObject);
        parentNode.Nodes.Add(childNode);
        return childNode;
    }
}

VB.NET

Public Partial Class MainWindow
    Inherits Window

    Public Sub New()
        ' ...
        BuildTree();
    End Sub

    Private Sub BuildTree()
        Dim rootNode As TreeListNode = CreateRootNode(New ProjectObject() With {.Name = "Project: Stanton", .Executor = "Nicholas Llams"})
        Dim childNode As TreeListNode = CreateChildNode(rootNode, New StageObject() With {.Name = "Information Gathering", .Executor = "Ankie Galva"})
        CreateChildNode(childNode, New TaskObject() With {.Name = "Design", .Executor = "Reardon Felton", .State = "In progress"})
    End Sub

    Private Function CreateRootNode(ByVal dataObject As Object) As TreeListNode
        Dim rootNode As TreeListNode = New TreeListNode(dataObject)
        Me.view.Nodes.Add(rootNode)
        Return rootNode
    End Function

    Private Function CreateChildNode(ByVal parentNode As TreeListNode, ByVal dataObject As Object) As TreeListNode
        Dim childNode As TreeListNode = New TreeListNode(dataObject)
        parentNode.Nodes.Add(childNode)
        Return childNode
    End Function
End Class