TreeListView.CustomSummary Event

Enables you to calculate summary values manually.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v14.2.dll

Declaration

C#

public event TreeListCustomSummaryEventHandler CustomSummary

VB.NET

Public Event CustomSummary As TreeListCustomSummaryEventHandler

Event Data

The CustomSummary event's handler receives an argument of the TreeListCustomSummaryEventArgs type. The following properties provide information specific to this event:

Property	Description
FieldValue	Gets the processed field value.
Node	Gets the processed node.
SummaryItem	Gets a summary item whose value is being calculated.
SummaryProcess	Gets a value indicating the calculation stage.
TotalValue	Gets or sets the total summary value.

Remarks

Total summaries provides 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.