TcxCustomDataSummaryItem Class
In This Article
The base class for summary items.
#Declaration
Delphi
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