TreeList and TreeView Controls Overview
TreeList (TreeListControl class) and TreeView (TreeViewControl class) controls allow you to display hierarchical data in the form of a tree, where nodes (records) can have other nodes as children.
Both the TreeListControl and TreeViewControl controls are TreeListControlBase descendants, and as such, they have many features in common.
The difference between the controls is that TreeList supports multiple columns of data — each node (row) displays one or more cells. TreeView can only display a single column of data.
Data Binding
The TreeList and TreeView controls support two types of data sources: self-referential (flat) and hierarchical. They differ in the way how records store the hierarchy information.
Besides bound mode, the controls can function in unbound mode, in which you manually add nodes and thus create the hierarchy.
The TreeList control supports unbound columns, which you can use to display arbitrary data.
See the following topics for more information:
Nodes
TreeList and TreeView controls create nodes once you bind them to a data source. Each node in the TreeView control displays a single value. A TreeList control's node displays values for all columns.
The controls also support unbound mode, in which you can create a node hierarchy manually.
See the following topic for more information: Nodes.
Columns (TreeList)
The TreeList control displays data in a tabular form, in which data is arranged in rows (nodes) and columns. Unlike the TreeView control, TreeList supports multiple columns.
See the following topic about column customization options and operations on columns: Columns.
Styles
The Styles mechanism allows you to customize the appearance settings of the controls' visual elements in various states.
See the following topic for details on the styling mechanism: Styles.
Data Editing
The TreeView and TreeList controls use in-place Eremex editors to display and edit cell values by default. You can explicitly assign editors to the controls' columns to customize how cell values are rendered and being edited.
See the following topics for more information:
Data Search and Filtering
The data search and filtering features allow you and your user to locate nodes that contain specific values.
You can find more information in the following topic: Search and Filtering.
Sorting
Data sorting allows the TreeList and TreeView controls to arrange sibling nodes in ascending or descending order. TreeList supports data sorting by multiple columns. In addition, users can sort data in the TreeList using the mouse actions and a column header's context menu.
See the following topic for more information: Data Sorting.
Context Menus
Popup menus are displayed when a user right-clicks controls. See the following topic to learn how to customize the default popup menus and display custom menus for specific UI elements: Context Menus.