PivotCellBaseEventArgs.CreateDrillDownDataSource() Method
Returns a list of records used to calculate a summary value for the cell currently being processed.
Namespace: DevExpress.Xpf.PivotGrid
Assembly: DevExpress.Xpf.PivotGrid.v18.2.dll
Declaration
public PivotDrillDownDataSource CreateDrillDownDataSource()
Public Function CreateDrillDownDataSource As PivotDrillDownDataSource
Returns
The CreateDrillDownDataSource 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.
Cells in the DXPivotGrid control 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.
Example
The PivotGridControl supports the drill-down capability, which enables you to retrieve a list of records that can be used to calculate a particular summary. To obtain drill-down data, use the PivotGridControl‘s PivotCellBaseEventArgs.CreateDrillDownDataSource method. Its parameters completely identify a summary cell.
In this example, an end-user can view records from the control’s underlying data source, associated with a summary cell, by double-clicking it. The obtained data is displayed by the DXGrid within a popup window.
using DevExpress.Mvvm;
using DevExpress.Mvvm.DataAnnotations;
using DevExpress.Mvvm.POCO;
using DevExpress.Xpf.PivotGrid;
using HowtoObtainUnderlyingData.NwindDataSetTableAdapters;
namespace HowtoObtainUnderlyingData {
[POCOViewModel]
public class ViewModel {
NwindDataSet.SalesPersonDataTable salesPersonDataTable = new NwindDataSet.SalesPersonDataTable();
SalesPersonTableAdapter salesPersonDataAdapter = new SalesPersonTableAdapter();
public NwindDataSet.SalesPersonDataTable DataSource { get { return salesPersonDataTable; } }
protected ViewModel() {
salesPersonDataAdapter.Fill(salesPersonDataTable);
}
public void ShowDrillDownData(CellInfo cellInfo) {
this.GetService<IDialogService>().ShowDialog(MessageButton.OK, "Drill Down Results", cellInfo);
}
}
}
<Window xmlns:dxpg="http://schemas.devexpress.com/winfx/2008/xaml/pivotgrid"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm"
xmlns:local="clr-namespace:HowtoObtainUnderlyingData"
xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid"
x:Class="HowtoObtainUnderlyingData.MainWindow"
Title="MainWindow" Height="419" Width="776"
DataContext="{dxmvvm:ViewModelSource Type=local:ViewModel}">
<dxmvvm:Interaction.Behaviors>
<dx:DialogService Name="DrillDownTemplate">
<dx:DialogService.DialogStyle>
<Style TargetType="dx:DXDialogWindow">
<Setter Property="Height" Value="400" />
<Setter Property="Width" Value="600" />
<Setter Property="ShowIcon" Value="False" />
<Setter Property="ShowInTaskbar" Value="False" />
<Setter Property="WindowStyle" Value="ToolWindow" />
</Style>
</dx:DialogService.DialogStyle>
<dx:DialogService.ViewTemplate>
<DataTemplate>
<dxg:GridControl ItemsSource="{Binding DrillDownDataSource}">
<dxg:GridControl.Columns>
<dxg:GridColumn FieldName="OrderID" />
<dxg:GridColumn FieldName="OrderDate"/>
<dxg:GridColumn FieldName="ProductName"/>
<dxg:GridColumn FieldName="Extended Price" Header="Price" />
</dxg:GridControl.Columns>
</dxg:GridControl>
</DataTemplate>
</dx:DialogService.ViewTemplate>
</dx:DialogService>
</dxmvvm:Interaction.Behaviors>
<Grid>
<dxpg:PivotGridControl DataSource="{Binding DataSource}" x:Name="pivot">
<dxpg:PivotGridControl.InputBindings>
<KeyBinding Command="{Binding ShowDrillDownDataCommand}" CommandParameter="{Binding SelectedCellInfo, ElementName=pivot}" Key="Enter"/>
</dxpg:PivotGridControl.InputBindings>
<dxmvvm:Interaction.Triggers>
<dxmvvm:EventToCommand PassEventArgsToCommand="True" Command="{Binding ShowDrillDownDataCommand}" EventName="MouseDoubleClick">
<dxmvvm:EventToCommand.EventArgsConverter>
<dxpg:EventArgsToCellInfoConverter />
</dxmvvm:EventToCommand.EventArgsConverter>
</dxmvvm:EventToCommand>
</dxmvvm:Interaction.Triggers>
<dxpg:PivotGridControl.Fields>
<dxpg:PivotGridField Name="fieldCountry" FieldName="Country" Area="RowArea" />
<dxpg:PivotGridField Name="fieldCustomer" FieldName="Sales Person" Area="RowArea"
Caption="Customer" />
<dxpg:PivotGridField Name="fieldYear" FieldName="OrderDate" Area="ColumnArea"
Caption="Year" GroupInterval="DateYear" />
<dxpg:PivotGridField Name="fieldCategoryName" FieldName="CategoryName"
Area="ColumnArea" Caption="Product Category" />
<dxpg:PivotGridField Name="fieldProductName" FieldName="ProductName"
Area="FilterArea" Caption="Product Name" />
<dxpg:PivotGridField Name="fieldExtendedPrice" FieldName="Extended Price"
Area="DataArea" CellFormat="c0" />
</dxpg:PivotGridControl.Fields>
</dxpg:PivotGridControl>
</Grid>
</Window>
using System.Windows;
namespace HowtoObtainUnderlyingData {
public partial class MainWindow : Window {
public MainWindow() {
InitializeComponent();
}
}
}
<Application x:Class="HowtoObtainUnderlyingData.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml">
<Application.Resources>
</Application.Resources>
</Application>
Imports DevExpress.Mvvm
Imports DevExpress.Mvvm.DataAnnotations
Imports DevExpress.Mvvm.POCO
Imports DevExpress.Xpf.PivotGrid
Imports NwindDataSetTableAdapters
Namespace HowtoObtainUnderlyingData
<POCOViewModel>
Public Class ViewModel
Private salesPersonDataTable As New NwindDataSet.SalesPersonDataTable()
Private salesPersonDataAdapter As New SalesPersonTableAdapter()
Public ReadOnly Property DataSource() As NwindDataSet.SalesPersonDataTable
Get
Return salesPersonDataTable
End Get
End Property
Protected Sub New()
salesPersonDataAdapter.Fill(salesPersonDataTable)
End Sub
Public Sub ShowDrillDownData(ByVal cellInfo As CellInfo)
Me.GetService(Of IDialogService)().ShowDialog(MessageButton.OK, "Drill Down Results", cellInfo)
End Sub
End Class
End Namespace
Imports System.Windows
Namespace HowtoObtainUnderlyingData
Partial Public Class MainWindow
Inherits Window
Public Sub New()
InitializeComponent()
End Sub
End Class
End Namespace
Imports System
Imports System.Collections.Generic
Imports System.Configuration
Imports System.Data
Imports System.Linq
Imports System.Windows
Namespace HowtoObtainUnderlyingData
''' <summary>
''' Interaction logic for App.xaml
''' </summary>
Partial Public Class App
Inherits Application
End Class
End Namespace
See Also