DemoCamara: BaseViewModel.cs

BaseViewModel.cs

using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace DemoCamara.ViewModels
{
    public class BaseViewModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        protected void OnPropertyChanged([CallerMemberName] string propertyName = "")
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        protected bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
        {
            if (object.Equals(storage, value)) return false;
            storage = value;
            OnPropertyChanged(propertyName);
            return true;
        }

        private bool _isBusy = false;

        public bool IsBusy
        {
            get => _isBusy;
            set => SetProperty(ref _isBusy, value);
        }
    }
}