TreeViewControl.ExpandStateFieldName Property

Gets or sets the field name in a data source that specifies expanded nodes. This is a dependency property.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v24.1.dll

NuGet Package: DevExpress.Wpf.Grid.Core

Declaration

C#

public string ExpandStateFieldName { get; set; }

VB.NET

Public Property ExpandStateFieldName As String

Property Value

Type	Description
String	The field name in a data source that specifies expanded nodes.

Remarks

XAML

<dxg:TreeViewControl ItemsSource="{Binding EmployeeDepartments}" 
                     ChildNodesPath="Employees" 
                     TreeViewFieldName="Name"
                     ExpandStateFieldName="Expanded"/>

C#

public class EmployeeDepartment {
    public string Name { get; set; }
    public ObservableCollection<Employee> Employees { get; }
    public bool Expanded { get; set; }
}

VB.NET

Public Class EmployeeDepartment
    Public Property Name As String
    Public ReadOnly Property Employees As ObservableCollection(Of Employee)
    Public Property Expanded As Boolean
End Class