using System; using CommunityToolkit.Mvvm.ComponentModel; namespace Ursa.Demo.ViewModels; public partial class DateRangePickerDemoViewModel: ObservableObject { [ObservableProperty] private DateTime? _startDate; [ObservableProperty] private DateTime? _endDate; public DateRangePickerDemoViewModel() { StartDate = DateTime.Today; EndDate = DateTime.Today.AddDays(7); } }