using System.Collections.ObjectModel; using CommunityToolkit.Mvvm.ComponentModel; namespace Ursa.Demo.ViewModels; public class MultiComboBoxDemoViewModel: ObservableObject { public ObservableCollection Items { get; set; } public MultiComboBoxDemoViewModel() { Items = new ObservableCollection() { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5", "Item 6", "Item 7", "Item 8", "Illinois", "Indiana", "Iowa", "Kansas", "Kentucky", "Louisiana", }; } }