TreeListEditor Class

Represents a Windows Forms List Editor that displays data in the form of a tree-like structure.

Namespace: DevExpress.ExpressApp.TreeListEditors.Win

Assembly: DevExpress.ExpressApp.TreeListEditors.Win.v25.2.dll

NuGet Package: DevExpress.ExpressApp.TreeListEditors.Win

Declaration

C#

public class TreeListEditor :
    ColumnsListEditor,
    IDXPopupMenuHolder,
    IComplexListEditor,
    IControlOrderProvider,
    IOrderProvider,
    ILookupListEditor,
    IFocusedElementCaptionProvider,
    INodeObjectAdapterProvider,
    ISupportFooter,
    IExportable,
    ISupportUpdate,
    IRequireContextMenu,
    IRequireDXMenuManager,
    ISupportBorderStyle,
    ISupportFilterEditor

VB.NET

Public Class TreeListEditor
    Inherits ColumnsListEditor
    Implements IDXPopupMenuHolder,
               IComplexListEditor,
               IControlOrderProvider,
               IOrderProvider,
               ILookupListEditor,
               IFocusedElementCaptionProvider,
               INodeObjectAdapterProvider,
               ISupportFooter,
               IExportable,
               ISupportUpdate,
               IRequireContextMenu,
               IRequireDXMenuManager,
               ISupportBorderStyle,
               ISupportFilterEditor

Remarks

List Views use List Editors to display object collections in a UI. TreeListEditor ships with the TreeList Editors module, and displays data in the form of a tree:

To display object collections, TreeListEditor uses an instance of the ObjectTreeList as the underlying control. ObjectTreeList is a descendant of the TreeList class.

TreeListEditor supports a range of features out of the box:

• Implements the ISupportAppearanceCustomization interface to support conditional appearance:

  

• Implements the IExportable interface to enable export through the ExportController and printing through the PrintingController:

  

  

• Implements the IDXPopupMenuHolder interface and provides the ActionDX pop-up menu:

  

• Implements the IControlOrderProvider interface to support the RecordsNavigationController‘s PreviousObject and NextObject Actions:

  

Since it is not possible to display an arbitrary object collection in the form of a tree, the objects that TreeListEditor displays must implement the ITreeNode interface. To learn how to implement this interface, refer to the following topic: Display a Tree List using the ITreeNode Interface.

For additional information on TreeListEditor and an overview of the TreeList Editors module, refer to the following topic: TreeList Editors Module Overview.

Note

TreeListEditor supports only Client mode (CollectionSourceBase.DataAccessMode).

Implements

IComplexListEditor

IFocusedElementCaptionProvider

IExportable

ISupportUpdate

Inheritance

Object

ListEditor

ColumnsListEditor

TreeListEditor