DBTreeView - show master-detail data in tree form

rDBTreeView is database version of standard TreeView component which provides loading datasets values to tree structure and supports editing, item drag & drop moving and many other functions.

Benefits:

• unlimited number of item definitions and nested levels (property DataItemDefs)
• item text is defined by any masked string with dataset fields for each item
• defined image, color and font style for each item, text can be align to columns
• allows editing of items with events for batch storing changes to dataset
• support drag & drop of items in defined levels (also multiselected) including auto scrolling during dragging
• support loading items on expand (fast initialization) and delayed refresh (fast scrolling)
• object with all details and KeyField + Value is created for each item, so it is easy to find db record for each item and vice versa
• MultiLevel support - allows to load any number of levels from one table (by ParentId field), set MultilevelMode=true and ParentKeyFieldName

Example 1 - list of all companies

• all company records are loaded on show (MasterDataSource=nil, call rDBTreeView.RefreshData to load)
• only first level is loaded to speed up initialization, detail is automatically loaded after item is expanded (LoadFirstLevelOnle=true, Master-Detail datasets is used)
• DataItemDefs detail - see demo application or video

Design example in video:
Definition of items in DBTreeView
Definition of edit and drag & drop function in DBTreeView

Example 2 - details for selected company

• details is loaded automatically after Company table is scrolled (MasterDataSource=Company datasource)
• delayed loading is used to allows fast company scrolling (LoadDataDelay = 150 ms)
• DataItemDefs detail - see demo application or video

Design example in video:
Definition of items in DBTreeView

Detail of one DataItem definition:

Open documentation page.

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