Learn the Basics
This section includes articles that cover essential Tree List control terms and techniques.
The Tree List control displays records of the associated data source by means of nodes. Nodes, however, can be much more complex than a number of cells displaying dataset field values. The documents in this section describe the term “node”, and provide information on how to perform operations on nodes.
An overview topic that explains what Tree List nodes are.
Using the Nodes Iterator
Nodes iterator is an object that allows you to traverse Tree List nodes without writing recursive code manually.
This topic shows how to create custom nodes and use them in your Tree List control.
The Tree List control displays data by means of nodes and columns. Nodes correspond to individual records, while columns represent data source fields. This section contains description for columns themselves and elements related to the column layout - bands and preview sections.
The title columns article. Contains the detailed info on columns, their layout, behavior and appearance settings.
Learn how to anchor specific columns to the left or right of a control’s edge.
Bands are visual and logical groups into which you can arrange columns. You can hide, display and reorder bands along with their child columns. This document describes the band features, how to anchor bands and how to organize them into a hierarchical structure.
Preview sections are regions below Tree List records, stretched across the entire node width. These regions are non-editable and designed to display large memo fields or custom data for a given record.
You can activate this visual style to imitate the appearance of the standard TreeView control. The TreeView style is supported in single-column and multi-column modes.
This section contains all required info related to binding the Tree List control to various data types, as well as operating in unbound mode.
Articles in this section demonstrate different data editing approaches supported by the Tree List control.
Topics in this section provide information about sorting Tree List data against specific columns.
Data filtering is an essential requirement for most software applications. The Tree List Suite is packed with numerous filtering features, so that you can deliver a solution that best meets your customer’s requirements.
Microsoft Excel Style Filter Dropdowns
The simplest end-user filtering tasks can be accomplished using Filter Dropdown Lists. These lists mimic the filtering UI implemented in Microsoft Excel.
Automatic Filtering Row
The Auto Filter Row is a row, displayed above all other nodes, which allows end users to filter data by entering filter values within its cells.
Advanced Filter Editor Dialog
With this dialog, you will be able to build filter criteria of any complexity - create any number of conditions and combine them in any manner using any logical operator.
Filtering in Code
Filtering using an event allows you to create a filter of any complexity, and hide any nodes you want from the screen.
The Tree List control provides a summary feature for calculating the value of an aggregate function over column values. This section lists the available summary types and describes methods of formatting the displayed summary. It also contains a brief description of end-user capabilities for configuring and using summaries.
Enumerates various summary types available in the Tree List control.
This topic describes how to implement total summaries calculated against all or only root nodes.
Contains information related with setting up group summaries, calculated for each group of nodes that have the same parent.
This topic illustrates how to implement custom aggregate functions.
Formatting Summary Values
Learn how to format a summary’s text and change the appearance of summary values.
Formatting Cell Values
The Tree List gives you the ability to format column values in display mode (when in-place editors are not active). This section lists which members can be used to format values, provides links to the documents that describe the formatting mechanism and provides task-based examples.
Briefly describes formatting approaches available for the Tree List control.
Members that Support the Formatting Mechanism
Enumerates properties that affect cell formats.
Format specifiers are symbols that specify the way data is formatted during its conversion to a string. This topic describes frequently used standard and custom format specifiers used to format numeric and date/time values.
The Composite Formatting feature allows you to add custom text to the output formatted string.
The Custom Formatting feature allows you to format values that are neither numeric nor date/time and implement complex formatting of numeric or date/time values.
This section covers the design-time features of the Tree List control.
The Tree List provides context menus for its elements that contain most used commands. There are context menus for column headers, group summary footers and the total summary footer. This section contains information on these menus and shows how to extend their capabilities.
Printing the Tree List control
Learn how to print the Tree List control using the DevExpress Printing library.
Export and Import Data
This topic describes the control’s export and import capabilities and limitations.
End User Capabilities
Topics in this section describe the operations available to end-users of the Tree List control.