TcxCustomDataSummaryItem Class
The base class for summary items.
Declaration
TcxCustomDataSummaryItem = class(
TCollectionItem
)Remarks
A summary item calculates and displays a summary of a data item according to one of the predefined algorithms in a footer (footer summary) or a data group (group summary).
The TcxCustomDataSummaryItem class implements base summary functionality.
Main API Members
The list below outlines key members of the TcxCustomDataSummaryItem class. These members allow you to configure common summary item settings.
Summary-Related API Members
- Format
- Specifies a custom formatting pattern for summary display text.
- ItemLink
- Allows you to associate the summary item with a data item.
- Kind
- Specifies a predefined summary calculation algorithm.
General-Purpose API Members
- Assign
- Copies compatible settings between summary items.
- BeginUpdate | EndUpdate
- Allow you to avoid excessive summary recalculations and corresponding redraw operations during batch summary item setting changes.
- Collection
- Provides access to the parent summary item collection.
- DataController | Field
- Provide access to the parent data controller and the source data field in it.
- Index
- Returns the summary item’s index in the parent collection.
Terminal TcxCustomDataSummaryItem Class Descendants
Do not use the TcxCustomDataSummaryItem class directly. Use the following descendants instead:
- TcxGridDBTableSummaryItem
- A summary calculated using values of a tabular View’s data field.
- TcxGridServerModeBandedSummaryItem
- TcxGridServerModeSummaryItem
- TcxGridTableSummaryGroupItemLink
- Links a column with group summaries in a summary group.
- TcxGridTableSummaryItem
- A column summary.
- TcxTreeListSummaryItem
- A set of appearance and calculation options for a column‘s footer and group summaries.
Inheritance
TObject
TPersistent
TCollectionItem
TcxCustomDataSummaryItem
See Also