ListBoxEdit.GroupStyle Property

Gets a collection of GroupStyle objects that define the appearance of each group level.

Namespace: DevExpress.Xpf.Editors

Assembly: DevExpress.Xpf.Core.v19.2.dll

Declaration

C#

public ObservableCollection<GroupStyle> GroupStyle { get; }

VB.NET

Public ReadOnly Property GroupStyle As ObservableCollection(Of GroupStyle)

Property Value

Type	Description
ObservableCollection<GroupStyle>	One or more GroupStyle objects.

Remarks

DevExpress WPF ComboBoxEdit, LookUpEdit and ListBoxEdit controls include support for ICollectionView – allowing you to manipulate the current record and define rules for filtering, sorting and grouping.

By default, if a grouping rule is defined in the ICollectionView, editors display the plain list in which items are sorted to accomplish data grouping. Use the GroupStyle property to visually enhance the presentation of grouped items. For instance, you can display expandable groups (see the image below):

Note

When grouping is used, the ListBoxEdit control scrolls items per group by default. To change this behavior, set the VirtualizingPanel.IsVirtualizingWhenGrouping attached property to true.

Xaml

<dxe:ListBoxEdit VirtualizingPanel.IsVirtualizingWhenGrouping="True">
   ...
</dxe:ListBoxEdit>

Example

Note

A complete sample project is available at https://github.com/DevExpress-Examples/ListBoxEdit-group-mode

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the GroupStyle property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

ListBoxEdit-group-mode/CS/MainWindow.xaml#L63

</dxe:ListBoxEdit.EditTemplate>
<dxe:ListBoxEdit.GroupStyle>
    <GroupStyle HidesIfEmpty="True">