TcxCustomDataSummaryItem.Kind Property

Specifies the summary calculation algorithm.

Declaration

property Kind: TcxSummaryKind read; write; default skNone;

Property Value

Type	Default	Description
TcxSummaryKind	skNone	The active summary calculation algorithm.

Remarks

Use the Kind property to switch between predefined summary calculation algorithms.

Tip

To implement a custom summary calculation algorithm, handle the OnSummary event of the parent summary item collection.

Available Options

This section lists all possible Kind property values for group and footer summaries.

All Summaries

skNone

Default. The summary item does not calculate a summary for the source data item.

This option is useful if you need to define a custom summary value within the parent data controller‘s Summary.OnAfterSummary event handler.

Group Summaries

skSum

Sums all record values in a group.

skMin

Identifies the lowest value among all record values in a group.

skMax

Identifies the highest value among all record values in a group.

skCount

Returns the number of records in a group.

skAverage

Calculates the average of all record values in a group.

Footer Summaries

skSum

Sums all record values of the source data item.

skMin

Identifies the lowest value among all record values of the source data item.

skMax

Identifies the highest value among all record values of the source data item.

skCount

Returns the total number of records.

skAverage

Calculates the average of all record values in the source data item.

Default Value

The Kind property’s default value is skNone.