Data Binding RadListBox SelectedItems Property

Updated on Sep 15, 2025

Environment

Property	Value
Product	RadListBox for WPF
Version	2024.1.312

Description

How to data bind the SelectedItems of RadListBox to a collection property in the view model.

Solution

This can be done via the ListBoxSelectedItemsBehavior.SelectedItemsSource attached property.

Defining the view model

C#

	public class MainViewModel
	{
		public MainViewModel()
		{
			Items = new ObservableCollection<MyItemType>();
			// populate the Items collection
			
			SelectedItems = new ObservableCollection<MyItemType>();
		}
	  
		public ObservableCollection<MyItemType> Items { get; set; }
		public ObservableCollection<MyItemType> SelectedItems { get; set; }  
	}

Setting the SelectedItemsSource property

XAML

	<telerik:RadListBox ItemsSource="{Binding Items}"
						telerik:ListBoxSelectedItemsBehavior.SelectedItemsSource="{Binding SelectedItems}"
						SelectionMode="Multiple" />