using System.Collections.Generic; using System.Linq; using Avalonia.Controls; using Avalonia.Interactivity; namespace IntegrationTestApp.Pages; public partial class ListBoxPage : UserControl { public ListBoxPage() { InitializeComponent(); ListBoxItems = Enumerable.Range(0, 100).Select(x => "Item " + x).ToList(); DataContext = this; } public List ListBoxItems { get; } private void ListBoxSelectionClear_Click(object? sender, RoutedEventArgs e) { BasicListBox.SelectedIndex = -1; } }