What consequences can arise if the INotifyPropertyChanged interface is not implemented in an application for property change notifications?

If a C# application does not implement the INotifyPropertyChanged interface to notify about property changes:

• The UI will not automatically update when data in the model or view-model changes, leading to desynchronization between the displayed information and the actual state.
• Binding mechanisms (such as in WPF or Xamarin) will not be able to detect changes, and the user will see outdated data.
• This will degrade the user experience and complicate debugging, as data changes will not be reflected in the interface.

Example implementation:

public class Person : INotifyPropertyChanged
{
    private string name;
    public string Name
    {
        get => name;
        set
        {
            if (name != value)
            {
                name = value;
                OnPropertyChanged(nameof(Name));
            }
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

Without this mechanism, changes in properties will not be propagated to the UI.