using System; using CommunityToolkit.Mvvm.ComponentModel; namespace Ursa.Demo.ViewModels; public partial class TimeRangePickerDemoViewModel: ObservableObject { [ObservableProperty] private TimeSpan? _startTime; [ObservableProperty] private TimeSpan? _endTime; public TimeRangePickerDemoViewModel() { StartTime = new TimeSpan(8, 21, 0); EndTime = new TimeSpan(18, 22, 0); } }