DetailDescriptorCollection Class

Stores a collection of Detail Descriptors.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v23.2.Core.dll

NuGet Package: DevExpress.Wpf.Grid.Core

Declaration

C#

public class DetailDescriptorCollection :
    ObservableCollection<DetailDescriptorBase>

VB.NET

Public Class DetailDescriptorCollection
    Inherits ObservableCollection(Of DetailDescriptorBase)

Related API Members

The following members return DetailDescriptorCollection objects:

• MultiDetailDescriptor.DetailDescriptors

Remarks

This class stores a collection of DetailDescriptorBase descendants. Such collections are exposed by Detail Descriptors that allow you to display multiple details on the same level.

DetailDescriptorCollection is the type of the MultiDetailDescriptor.DetailDescriptors property exposed by the TabViewDetailDescriptor class. In other words, you will need to use this collection when setting up multiple details to be displayed within a tabbed container.

Example

This example creates a master-detail GridControl in code-behind. The example creates a tabbed detail (TabViewDetailDescriptor) that contains the following tabs:

• The Orders tab uses the DataControlDetailDescriptor to display the GridControl.
• The Notes tab uses the ContentDetailDescriptor to display a memo field.
• The Stats tab uses the ContentDetailDescriptor to display the Chart Control.

View Example: Create a Master-Detail Grid in Code

C#

using DevExpress.Xpf.Grid;
using System.Windows;

namespace MasterDetailInCode {
    public partial class MainWindow : Window {
        public MainWindow() {
            InitializeComponent();
            GridControl gridControl = CreateGridControl();
            AddDetails(gridControl);
            gridControl.Loaded += (d, e) => { (d as GridControl)?.ExpandMasterRow(0); };
            grid.Children.Add(gridControl);
        }

        private GridControl CreateGridControl() {
            GridControl gridControl = new GridControl();
            gridControl.AutoGenerateColumns = AutoGenerateColumnsMode.AddNew;
            gridControl.ItemsSource = Employees.GetEmployees();
            gridControl.View = new TableView();
            ((TableView)gridControl.View).AutoWidth = true;
            ((TableView)gridControl.View).ShowGroupPanel = false;
            gridControl.View.DetailHeaderContent = nameof(Employees);

            return gridControl;
        }
        private void AddDetails(GridControl gridControl) {
            GridControl detailGridControl = new GridControl();
            detailGridControl.AutoGenerateColumns = AutoGenerateColumnsMode.AddNew;
            detailGridControl.View = new TableView();
            ((TableView)detailGridControl.View).AutoWidth = true;
            ((TableView)detailGridControl.View).ShowGroupPanel = false;
            detailGridControl.View.DetailHeaderContent = nameof(Employee.Orders);

            DataControlDetailDescriptor gridDetail = new DataControlDetailDescriptor();
            gridDetail.ItemsSourcePath = nameof(Employee.Orders);
            gridDetail.DataControl = detailGridControl;

            ContentDetailDescriptor customDetail = new ContentDetailDescriptor();
            customDetail.ContentTemplate = (DataTemplate)FindResource("notesTemplate");
            customDetail.HeaderContent = nameof(Employee.Notes);

            ContentDetailDescriptor chartDetail = new ContentDetailDescriptor();
            chartDetail.ContentTemplate = (DataTemplate)FindResource("chartTemplate");
            chartDetail.HeaderContent = "Stats";

            TabViewDetailDescriptor tabDetail = new TabViewDetailDescriptor();
            tabDetail.DetailDescriptors.Add(gridDetail);
            tabDetail.DetailDescriptors.Add(customDetail);
            tabDetail.DetailDescriptors.Add(chartDetail);

            gridControl.DetailDescriptor = tabDetail;
        }
    }
}

VB.NET

Imports DevExpress.Xpf.Grid
Imports System.Windows

Namespace MasterDetailInCode

    Public Partial Class MainWindow
        Inherits Window

        Public Sub New()
            Me.InitializeComponent()
            Dim gridControl As GridControl = CreateGridControl()
            AddDetails(gridControl)
            AddHandler gridControl.Loaded, Sub(d, e) TryCast(d, GridControl)?.ExpandMasterRow(0)
            Me.grid.Children.Add(gridControl)
        End Sub

        Private Function CreateGridControl() As GridControl
            Dim gridControl As GridControl = New GridControl()
            gridControl.AutoGenerateColumns = AutoGenerateColumnsMode.AddNew
            gridControl.ItemsSource = Employees.GetEmployees()
            gridControl.View = New TableView()
            CType(gridControl.View, TableView).AutoWidth = True
            CType(gridControl.View, TableView).ShowGroupPanel = False
            gridControl.View.DetailHeaderContent = NameOf(Employees)
            Return gridControl
        End Function

        Private Sub AddDetails(ByVal gridControl As GridControl)
            Dim detailGridControl As GridControl = New GridControl()
            detailGridControl.AutoGenerateColumns = AutoGenerateColumnsMode.AddNew
            detailGridControl.View = New TableView()
            CType(detailGridControl.View, TableView).AutoWidth = True
            CType(detailGridControl.View, TableView).ShowGroupPanel = False
            detailGridControl.View.DetailHeaderContent = NameOf(Employee.Orders)
            Dim gridDetail As DataControlDetailDescriptor = New DataControlDetailDescriptor()
            gridDetail.ItemsSourcePath = NameOf(Employee.Orders)
            gridDetail.DataControl = detailGridControl
            Dim customDetail As ContentDetailDescriptor = New ContentDetailDescriptor()
            customDetail.ContentTemplate = CType(FindResource("notesTemplate"), DataTemplate)
            customDetail.HeaderContent = NameOf(Employee.Notes)
            Dim chartDetail As ContentDetailDescriptor = New ContentDetailDescriptor()
            chartDetail.ContentTemplate = CType(FindResource("chartTemplate"), DataTemplate)
            chartDetail.HeaderContent = "Stats"
            Dim tabDetail As TabViewDetailDescriptor = New TabViewDetailDescriptor()
            tabDetail.DetailDescriptors.Add(gridDetail)
            tabDetail.DetailDescriptors.Add(customDetail)
            tabDetail.DetailDescriptors.Add(chartDetail)
            gridControl.DetailDescriptor = tabDetail
        End Sub
    End Class
End Namespace

XAML

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:MasterDetailInCode"
        xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid" 
        xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts"
        x:Class="MasterDetailInCode.MainWindow"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Window.Resources>
        <DataTemplate x:Key="notesTemplate">
            <TextBlock Text="{Binding Path=Notes}" TextWrapping="Wrap" Padding="4"/>
        </DataTemplate>
        <DataTemplate x:Key="chartTemplate">
            <dxc:ChartControl DataSource="{Binding Path=Orders}">
                <dxc:SimpleDiagram2D>
                    <dxc:SimpleDiagram2D.Series>
                        <dxc:PieSeries2D ArgumentDataMember="Supplier" ValueDataMember="Quantity" LabelsVisibility="True">
                            <dxc:PieSeries2D.PointOptions>
                                <dxc:PointOptions>
                                    <dxc:PointOptions.ValueNumericOptions>
                                        <dxc:NumericOptions Format="Percent" Precision="0"/>
                                    </dxc:PointOptions.ValueNumericOptions>
                                </dxc:PointOptions>
                            </dxc:PieSeries2D.PointOptions>
                            <dxc:PieSeries2D.LegendPointOptions>
                                <dxc:PointOptions Pattern="{}{A}"/>
                            </dxc:PieSeries2D.LegendPointOptions>
                        </dxc:PieSeries2D>
                    </dxc:SimpleDiagram2D.Series>
                </dxc:SimpleDiagram2D>
                <dxc:ChartControl.Legend>
                    <dxc:Legend Visibility="Visible"/>
                </dxc:ChartControl.Legend>
            </dxc:ChartControl>
        </DataTemplate>
    </Window.Resources>

    <Grid x:Name="grid"/>

</Window>

Inheritance

Object

Collection<DetailDescriptorBase>

ObservableCollection<DetailDescriptorBase>

DetailDescriptorCollection