TTMSFNCTreeViewDatabaseAdapter Class

Connects a TDataSource to a tree view, loading dataset records as flat or hierarchical nodes and supporting inline editing, sorting, filtering, and scrolling.

API unit family: TMSFNCTreeViewDatabaseAdapter Inherits from: TTMSFNCTreeViewAdapter

Syntax

TTMSFNCTreeViewDatabaseAdapter = class(TTMSFNCTreeViewAdapter)

Properties

Name	Description
AutoCreateColumns	True automatically creates column definitions for all visible dataset fields when the datasource opens. Default: True.
AutoRemoveColumns	True automatically removes auto-created column definitions when the datasource closes. Default: True.
Columns	Column definitions that map dataset fields to tree view columns.
DataLink	The TDataLink that monitors the connected datasource for record changes and dataset state transitions.
DataSetType	Specifies whether the connected dataset supports absolute record positioning. Default: adsSequenced.
DataSetTypeAuto	True lets the adapter detect the DataSetType automatically at runtime. Default: True.
DataSource	The TDataSource that supplies the dataset to display in the tree view.
FieldAtColumn	Returns the TField at the specified tree view column index, or nil when no field is mapped to that column.
FieldIndexAtColumn	Returns the dataset field index at the specified tree view column index, or -1 when no field is mapped.
PostMode	Specifies when the adapter automatically posts record edits back to the dataset. Default: apmNode.
ShowBooleanFields	True includes Boolean fields in auto-created columns. Default: True.
ShowMemoFields	True includes memo fields in auto-created columns. Default: False.
ShowPictureFields	True includes picture (BLOB) fields in auto-created columns. Default: True.
Version	Version number of this database adapter component.

Methods

Name	Description
AddAllFields	Creates a column definition for every visible field in the connected dataset.
CheckDataSet	Returns True when the connected datasource has an active, open dataset.
LoadAllDataAndDisconnect	Loads all records from the connected dataset into the tree view and then disconnects the datasource.
RemoveAllColumns	Removes all column definitions and also removes the corresponding columns from the tree view.
RemoveAllFields	Removes all column definitions from the adapter.

Events

Name	Description
OnGetHTMLTemplate	Fires when the adapter needs the HTML template string for a specific cell.
OnGetHTMLTemplateData	Fires when the adapter needs a substitution value for a named HTML template placeholder in a specific cell.
OnGetRecordCount	Fires when the adapter needs the total record count; use this when the dataset does not expose RecordCount directly.