Explain.cs

class BindableBase : INotifyPropertyChanged
{
  public event PropertyChangedEventHandler PropertyChanged;
  protected bool SetProperty<T>(ref T field, T value, [CallerMemberName]string propertyName = null)
  {
    Debug.WriteLine("PropertyChangedが {GetType().Name} で呼ばれました。");
    field = value;
    PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
  }
}

class MyViewModel : BindableBase
{
  private string _name;
  public string Name
  {
    get => _name;
    set
    {
      Debug.WriteLine("set_Name が {GetType().Name} で呼ばれました。");
      SetProperty(ref _name, value);
    }
  }
}