AopInpc

Castle.DynamicProxy based library that provides a way to implement INotifyPropertyChanged automatically using AOP style.

Declaration:

public class ViewModel : INotifyPropertyChangedCaller
{
    [Inpc]
    public virtual string Property { get; set; }

    public event PropertyChangedEventHandler PropertyChanged;
    public void RaisePropertyChanged(string propertyName)
        => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}

Usage:

• AopInpcFactory

static void Main(string[] args)
{
    var viewModel = AopInpcFactory.Create<ViewModel>();
    //var viewModel = AopInpcFactory.Decorate(new ViewModel());
    viewModel.PropertyChanged += (sender, eventArgs)
        => Console.WriteLine($"The property \"{eventArgs.PropertyName}\" was updated with value \"{viewModel.Property}\".");
    viewModel.Property = "Hello world!";
}

• DI-container

static void Main(string[] args)
{
    var containerBuilder = new ContainerBuilder();
    containerBuilder.RegisterType<InpcInterceptor>();
    containerBuilder.RegisterType<ViewModel>()
        .EnableClassInterceptors()
        .InterceptedBy(typeof(InpcInterceptor));
    var container = containerBuilder.Build();

    var viewModel = container.Resolve<ViewModel>();
    viewModel.PropertyChanged += (sender, eventArgs)
        => Console.WriteLine($"The property \"{eventArgs.PropertyName}\" was updated with value \"{viewModel.Property}\".");
    viewModel.Property = "Hello world!";
}

• Castle.DynamicProxy ProxyGenerator

static void Main(string[] args)
{
    var viewModel = new ProxyGenerator().CreateClassProxy<ViewModel>(new InpcInterceptor());
    viewModel.PropertyChanged += (sender, eventArgs)
        => Console.WriteLine($"The property \"{eventArgs.PropertyName}\" was updated with value \"{viewModel.Property}\".");
    viewModel.Property = "Hello world!";
}

Output:

The property "Property" was updated with value "Hello world!".