LookUpEditBase.ItemsPanel Property

Gets or sets the template that defines the panel that controls the layout of items displayed within the editor's dropdown. This is a dependency property.

Namespace: DevExpress.Xpf.Editors

Assembly: DevExpress.Xpf.Core.v20.1.dll

Declaration

[Browsable(false)]
public ItemsPanelTemplate ItemsPanel { get; set; }
<Browsable(False)>
Public Property ItemsPanel As ItemsPanelTemplate

Property Value

Type Description
ItemsPanelTemplate

A ItemsPanelTemplate object that represents the panel to use for the layout of the items.

Remarks

By default, the layout of items is defined by the DevExpress.Xpf.Core.DXVirtualizingStackPanel control with the enabled virtualization. In this instance, vertical scrolling is performed item by item. To activate per-pixel scrolling, do the following:

<dxe:ComboBoxEdit Name="cbEdit1"
                    Width="150" PopupHeight="100"
                    ScrollViewer.CanContentScroll="False"/>

See the ItemsPanel topic for more information.

Examples

This example shows how to speed up the editor's performance if it is bound to a large data source.

public MainWindow() {
    InitializeComponent();
    comboBoxEdit1.ItemsSource = GenerateData();
}

private List<string> GenerateData() {
    List<string> list = new List<string>();
    for (int i = 0; i < 2000; i++)
        list.Add(i.ToString());
    return list;
}
See Also