PivotGridControl.CreateDrillDownDataSourceAsync(Int32, Int32, AsyncCompletedHandler) Method

Returns a list of records used to calculate a summary value for the specified cell asynchronously.

Namespace: DevExpress.Xpf.PivotGrid

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

Declaration

C#

public void CreateDrillDownDataSourceAsync(
    int columnIndex,
    int rowIndex,
    AsyncCompletedHandler asyncCompleted
)

VB.NET

Public Sub CreateDrillDownDataSourceAsync(
    columnIndex As Integer,
    rowIndex As Integer,
    asyncCompleted As AsyncCompletedHandler
)

Parameters

Name	Type	Description
columnIndex	Int32	A zero-based integer which identifies the visible index of the column.
rowIndex	Int32	A zero-based integer which identifies the visible index of the row.
asyncCompleted	AsyncCompletedHandler	An AsyncCompletedHandler delegate referencing a method that should be executed after the operation is completed. The drill-down data source is passed to this method as a parameter.

Remarks

The CreateDrillDownDataSourceAsync method is asynchronous. It starts executing the related operation in a background thread, and immediately returns control. The primary UI thread is not blocked, allowing the application to continue responding to end-user actions. For more information about the asynchronous mode, see Asynchronous Mode.

The drill-down data source (a PivotDrillDownDataSource instance) is passed to the asyncCompleted delegate via the result parameter. This parameter returns an AsyncOperationResult instance. Use the AsyncOperationResult.Value property to obtain the drill-down data source.

To create a drill-down data source synchronously, use the PivotGridControl.CreateDrillDownDataSource method.

NOTE

In OLAP mode, calling this method is equivalent to calling the PivotGridControl.CreateOlapDrillDownDataSourceAsync method with the customColumns parameter set to null.

NOTE

Calling the CreateDrillDownDataSourceAsync method from the PivotGridControl.CustomSummary and PivotGridControl.CustomUnboundFieldData event handlers may result in the stack overflow exception. To provide custom cell values that require obtaining the underlying data to be calculated, handle the PivotGridControl.CustomCellValue event, and call the CreateDrillDownDataSourceAsync method in the event handler.