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TreeListView.AddingNewNode Event

Occurs before a new node is added to the GridControl and allows you to initialize the new record.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v22.2.dll

NuGet Package: DevExpress.Wpf.Grid.Core


public event TreeListAddingNewEventHandler AddingNewNode

Event Data

The AddingNewNode event's data class is TreeListAddingNewEventArgs. The following properties provide information specific to this event:

Property Description
NewObject Gets or sets the object to be added to the binding list. Inherited from AddingNewEventArgs.
ParentNode A parent node.


The AddingNewNode event occurs before the GridControl adds a new record to your data source. In this event handler, you can specify a data object and initialize its values.

        <dxg:TableView x:Name="view"
void view_AddingNewNode(object sender, DevExpress.Xpf.Grid.TreeList.TreeListAddingNewEventArgs e) {
    e.NewObject = new Employee() {
        ID = view.TotalNodesCount + 1,
        Name = "",
        Department = "Finance",
        Position = "Manager"


The AddingNewNode event does not fire when you add a new node directly to a bound data source.

If you want to maintain a clean MVVM pattern and specify a new data record in a View Model, create a command and bind it to the AddingNewNodeCommand property.

Refer to the following help topic for more information: Add and Remove Rows.

See Also