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.v20.2.dll
NuGet Packages: DevExpress.WindowsDesktop.Wpf.Core, DevExpress.Wpf.Core
Declaration
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.
Example
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;
}