Learn-WinUI-3-Second-Edition/Chapter03/Complete/MyMediaCollection/ViewModels/BindableBase.cs

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

namespace MyMediaCollection.ViewModels
{
    public class BindableBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

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

        protected bool SetProperty<T>(ref T originalValue, T newValue, [CallerMemberName] string propertyName = null)
        {
            if (Equals(originalValue, newValue))
            {
                return false;
            }

            originalValue = newValue;
            OnPropertyChanged(propertyName);

            return true;
        }
    }
}