GridControl.CustomSummary Event

Allows you to calculate summary values manually.

Namespace: DevExpress.UI.Xaml.Grid

Assembly: DevExpress.UI.Xaml.Grid.v20.1.dll


public event CustomSummaryEventHandler CustomSummary
Public Event CustomSummary As CustomSummaryEventHandler

Event Data

The CustomSummary event's data class is CustomSummaryEventArgs. The following properties provide information specific to this event:

Property Description
FieldValue Gets the processed field value.
GroupLevel Gets the nesting level of the group whose summary value is being calculated.
GroupRowHandle Gets a value identifying the group row whose child data rows are involved in summary calculation.
IsGroupSummary Gets whether a group summary value is being calculated.
IsTotalSummary Gets whether a total summary value is being calculated.
Item Gets a summary item whose value is being calculated.
Row Gets the currently processed row.
RowHandle Gets the handle of the processed row.
SummaryProcess Gets a value indicating calculation stage.
TotalValue Gets or sets the total summary value.
TotalValueReady Gets or sets whether the calculation stage of the custom summary calculation process should be skipped.


Total summaries provide five predefined aggregate functions (COUNT, MAX, MIN, SUM and AVG). If you want to calculate summaries using custom rules, handle the CustomSummary event. This event enables you to implement custom aggregate functions or calculate summary values, using a custom algorithm.

To learn more, see Custom Summary.

See Also