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V22.2

PivotCellEventArgs.CreateDrillDownDataSourceAsync() Method

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

Namespace: DevExpress.XtraPivotGrid

Assembly: DevExpress.XtraPivotGrid.v22.2.dll

NuGet Package: DevExpress.Win.PivotGrid

Declaration

public Task<PivotDrillDownDataSource> CreateDrillDownDataSourceAsync()

Returns

Type Description
Task<PivotDrillDownDataSource>

An asynchronous operation that returns PivotDrillDownDataSource.

Remarks

Cells in the Pivot Grid display summary and total summary values. Each summary and total summary value is calculated for a specific subset of records in the control’s underlying data source. These records are identified by the values of the column and row fields displayed within the column and row headers.

The CreateDrillDownDataSourceAsync method allows you to retrieve the subset of records from the control’s underlying data source, used to calculate the summary value for the current cell.

In Server and OLAP modes, the CreateDrillDownDataSourceAsync method returns only visible fields. To get hidden field values, use the method’s overloads with the customColumns parameter that allows you to specify the columns to return.

Example

Run Demo: OLAP Drill Down

The code snippet below shows how to create a drill-down data source for the selected Pivot Grid cell and how to display the resulting data source in the DrillDownForm dialog.

using DevExpress.XtraEditors;
using DevExpress.XtraPivotGrid;
using System;
using System.Windows.Forms;

namespace DxSampleOLAP {
    public partial class OLAPDrillDownUserControl : XtraUserControl {
      public OLAPDrillDownUserControl() {
            InitializeComponent();
            pivotGridControl.OptionsBehavior.UseAsyncMode = true;
            // ...
            pivotGridControl.CellDoubleClick += async (s, e) => {
                try {
                    pivotGridControl.LoadingPanelVisible = true;
                    PivotDrillDownDataSource ds = await e.CreateDrillDownDataSourceAsync();
                    pivotGridControl.LoadingPanelVisible = false;
                    using(DrillDownForm form = new DrillDownForm(ds))
                        form.ShowDialog();
                } catch(Exception ex) {
                    pivotGridControl.LoadingPanelVisible = false;
                    XtraMessageBox.Show(ex.Message);
                }
            };
        }
    }
}
See Also