using System.Collections.ObjectModel; using System.Linq; using CommunityToolkit.Mvvm.ComponentModel; namespace Semi.Avalonia.Demo.ViewModels; public class TabControlDemoViewModel: ObservableObject { public ObservableCollection Items { get; set; } public TabControlDemoViewModel() { Items = new ObservableCollection(Enumerable.Range(1, 200).Select(a => "Tab " + a)); } }