[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = false, AllowMultiple = false)]
public sealed class FormatFilterAttribute : FilterAttribute, IActionFilter
{
    /// <summary>
    /// The type of files we can server the requested content in
    /// </summary>
    private enum FileFormat { Html, Json, Xml }
 
    public FormatFilterAttribute()
    {
        Disallow = string.Empty;
        RequestedFormat = FileFormat.Html;
    }
 
    /// <summary>
    /// Formats to disallow can be either Html, Json or Xml. Use comma to seperate multiple formats.
    /// </summary>
    public string Disallow { get; set; }
 
    /// <summary>
    /// The format that has been requested
    /// </summary>
    private FileFormat RequestedFormat { get; set; }
 
    /// <summary>
    /// Occurs before an action is executed
    /// </summary>
    /// <param name="filterContext"></param>
    public void OnActionExecuting(ActionExecutingContext filterContext)
    {
        FileFormat format = GetFileFormat(filterContext.HttpContext.Request.Path);
        if(IsDisallowed(format))
        {
            throw new ArgumentException("Requested format has been disallowed");
        }
 
        RequestedFormat = format;
    }
 
    /// <summary>
    /// Occurs after an action is executed
    /// </summary>
    /// <param name="filterContext"></param>
    public void OnActionExecuted(ActionExecutedContext filterContext)
    {
        if(!(filterContext.Result is ViewResult))
        {
            throw new InvalidOperationException("You need to call the View method, when the FormatFilter attribute is applied");
        }
 
        var view = (ViewResult)(filterContext.Result);            
        filterContext.Result = FormatViewResult(view);
    }
 
    /// <summary>
    /// Verifies if the format has been disallowed
    /// </summary>
    /// <param name="format"></param>
    /// <returns></returns>
    private bool IsDisallowed(FileFormat format)
    {
        return Disallow.Split(',').Any(s => s.ToLower() == format.ToString().ToLower());
    }
 
    /// <summary>
    /// Verifies that the requested format is one that can be servered
    /// </summary>
    /// <param name="ext"></param>
    /// <returns></returns>
    private bool IsValidFileExtension(string ext)
    {
        return Enum.GetNames(typeof(FileFormat)).Any(format => format.ToLower() == ext.Substring(1).ToLower());
    }
 
    /// <summary>
    /// 
    /// </summary>
    /// <param name="path"></param>
    /// <returns></returns>
    private FileFormat GetFileFormat(string path)
    {
        string ext = Path.GetExtension(path);
        if(string.IsNullOrEmpty(ext))
        {
            return FileFormat.Html;
        }
 
        if (!IsValidFileExtension(ext))
        {
            throw new FormatException("Requested format is not available");
        }
 
        return (FileFormat)Enum.Parse(typeof(FileFormat), ext.Substring(1), true);
    }
 
    private ActionResult FormatViewResult(ViewResultBase view)
    {
        switch (RequestedFormat)
        {
            case FileFormat.Html:
                return view;
            case FileFormat.Json:
                return new JsonResult { Data = view.ViewData.Model };
            case FileFormat.Xml:
                return new XmlResult(view.ViewData.Model);
            default:
                throw new FormatException(string.Concat("Cannot server the content in the request format: ", RequestedFormat));
        }
    }
}

[FormatFilter]
public class HomeController : Controller
{      
    public ActionResult Index()
    {
        var pizzas = new[]
                         {
                             new Pizza {Number = 1, Name = "Pizza 1", Price = "$10"},
                             new Pizza {Number = 2, Name = "Pizza 2", Price = "$13"},
                             new Pizza {Number = 3, Name = "Pizza 3", Price = "$20"}
                         };
 
        return View(pizzas);
    }
}

// Add this to Global.asax
routes.MapRoute(
	"Format",
	""{controller}/{action}/{id}.{format}"",
	new {id = "", format = ""}
);

var i=values.length;
while(i--){
	processData(values[i]);
}

processData(values[0]);
processData(values[1]);
processData(values[2]);
processData(values[3]);
processData(values[4]);

var iterations = Math.ceil(values.length / 8); 
var startAt = values.length % 8; 
var i = 0;  
 
do {     
	switch(startAt){         
		case 0: process(values[i++]);         
		case 7: process(values[i++]);         
		case 6: process(values[i++]);         
		case 5: process(values[i++]);         
		case 4: process(values[i++]);         
		case 3: process(values[i++]);         
		case 2: process(values[i++]);         
		case 1: process(values[i++]);     
	}     
	startAt = 0; 
} while (--iterations > 0);

var iterations = Math.floor(values.length / 8); 
var leftover = values.length % 8; 
var i = 0;  
 
if (leftover > 0){     
	do {         
		process(values[i++]);     
	} while (--leftover > 0); 
}  
 
do {     
	process(values[i++]);     
	process(values[i++]);     
	process(values[i++]);     
	process(values[i++]);     
	process(values[i++]);     
	process(values[i++]);     
	process(values[i++]);     
	process(values[i++]); 
} while (--iterations > 0);

/// <summary>
/// A base controller that will enable you to serve your data in either Json, Xml, Html
/// </summary>
public abstract class FormatController : Controller
{
	/// <summary>
	/// The Key to extract the format from Route Data
	/// </summary>
	private const string FORMAT_KEY = "Format";
 
	/// <summary>
	/// The type of files we can server the requested content in
	/// </summary>
	public enum FileFormat { Html, Json, Xml }
 
	protected FormatController()
	{
		// Our Default format
		RequestedFormat = FileFormat.Html;
	}
 
	/// <summary>
	/// The format that has been requested
	/// </summary>
	protected FileFormat RequestedFormat { get; private set; }
 
	/// <summary>
	/// Occurs before an action is executed
	/// </summary>
	/// <param name="filterContext"></param>
	protected override void OnActionExecuting(ActionExecutingContext filterContext)
	{
		base.OnActionExecuting(filterContext);
 
		var routeValues = filterContext.RouteData.Values;
		if (routeValues.ContainsKey(FORMAT_KEY))
		{
			var requestedFormat = routeValues[FORMAT_KEY].ToString();
			if (IsValidFormat(requestedFormat))
			{
				RequestedFormat = (FileFormat)Enum.Parse(typeof(FileFormat), requestedFormat, true);
			}
		}
	}
 
	/// <summary>
	/// Verifies that the requested format is one that can be servered
	/// </summary>
	/// <param name="requestedFormat"></param>
	/// <returns></returns>
	private bool IsValidFormat(string requestedFormat)
	{
		return Enum.GetNames(typeof(FileFormat)).Any(format => format.ToLower() == requestedFormat.ToLower());
	}
 
	/// <summary>
	/// Returns the content in the requested format
	/// </summary>
	/// <param name="viewModel">Viewmodel</param>
	/// <returns>ActionResult</returns>
	protected ActionResult FormatView(object viewModel)
	{
		switch (RequestedFormat)
		{
			case FileFormat.Html:
				return View(viewModel);
			case FileFormat.Json:
				return Json(viewModel);
			case FileFormat.Xml:
				return new XmlResult(viewModel);
			default:
				throw new FormatException(string.Concat("Cannot server the content in the request format: ", RequestedFormat));
		}
	}
}

public class Pizza
{
	public int Number { get; set; }
	public string Name { get; set; }
	public string Price { get; set; }
}
 
public class HomeController : FormatController
{
	public ActionResult Index()
	{
		var pizzas = new[]
			{
				new Pizza {Number = 1, Name = "Pizza 1", Price = "$10"},
				new Pizza {Number = 2, Name = "Pizza 2", Price = "$13"},
				new Pizza {Number = 3, Name = "Pizza 3", Price = "$20"}
			};
 
		return FormatView(pizzas);
	}
}

// Add this to Global.asax
routes.MapRoute(
	"Format",
	"{controller}/{action}.{format}/{id}",
	new {id = ""}
);

public interface ISubject
{
	void RegisterObserver(IObserver o);
 
	void RemoveObserver(IObserver o);
 
	void NotifyObservers();
}
 
public interface IObserver
{
	void Update(string story);
}
 
public class NewsPublisher : ISubject
{
	private List<IObserver> observers = new List<IObserver>();
 
	private List<string> archive = new List<string>();
 
	public void RegisterObserver(IObserver o)
	{
		observers.Add(o);
	}
 
	public void RemoveObserver(IObserver o)
	{
		observers.Remove(o);
	}
 
	public void NotifyObservers()
	{
		foreach(IObserver o in observers)
		{
			o.Update(archive[archive.Count - 1]);
		}
	}
 
	public void PublishBreakingNews(string story)
	{
		archive.Add(story);
		ArchiveChanged();
	}
 
	private void ArchiveChanged()
	{
		NotifyObservers();
	}
}
 
public class NewsSubscriber : IObserver
{
	public void Update(string story)
	{
        Console.WriteLine("--------------------- Breaking News ---------------------");
        Console.Write(story);
        Console.WriteLine();
	}
}
 
class Program
{
	static void Main(string[] args)
	{
		NewsSubscriber me = new NewsSubscriber();
 
		NewsPublisher publisher = new NewsPublisher();
 
		publisher.RegisterObserver(me);
 
		publisher.PublishBreakingNews("hello world");
	}
}

/// <summary>
/// Observer
/// </summary>
public class NewsSubscriber
{
	public void Update(string story)
	{
		Console.WriteLine("--------------------- Breaking News ---------------------");
		Console.Write(story);
		Console.WriteLine();
	}
}
 
/// <summary>
/// Subject
/// </summary>
public class NewsPublisher
{
	private readonly List<string> archive = new List<string>();
 
	public delegate void NotifyObserversHandler(string story);
 
	public event NotifyObserversHandler ArchiveChanged;
 
	public void PublishBreakingNews(string story)
	{
		archive.Add(story);
 
		// Notify observers
		ArchiveChanged(archive[archive.Count - 1]);
	}
}
 
class Program
{
	static void Main(string[] args)
	{
		NewsSubscriber me = new NewsSubscriber();
		NewsPublisher publisher = new NewsPublisher();
 
		//add the delegate to the event (register observer)
		publisher.ArchiveChanged += me.Update;
 
		publisher.PublishBreakingNews("Hello world");
	}
}

public class MyServiceLocatorAdapter : ServiceLocatorImplBase
{
    private IMyContainer container;
 
    public MyServiceLocatorAdapter(IMyContainer container)
    {
        this.container = container;
    }
 
    protected override object DoGetInstance(Type serviceType, string key)
    {
        return container.Resolve(serviceType, key);
    }
 
    protected override IEnumerable<object> DoGetAllInstances(Type serviceType)
    {
        return container.ResolveAll(serviceType);
    }
}

IUnityContainer container = new UnityContainer();
container.RegisterType<ISomeRepository, SomeRepository>();
 
MyServiceLocatorAdapter locator = new MyServiceLocatorAdapter(container);
 
ServiceLocator.SetLocatorProvider(() => locator);
 
ISomeRepository repository = ServiceLocator.Current.GetInstance<ISomeRepository>();;

public interface IRepository<T>
{
	T FindBy(Guid id);
	IList<T> FindAll();
	void Save(T item);
	void Delete(T item);
}

public class RepositoryBase<T> : IRepository<T> where T : IAggregateRoot
{
 
	public T FindBy(Guid id)
	{
		return (T)ActiveRecordMediator.FindByPrimaryKey(typeof(T), id);
	}
 
	public IList<T> FindAll()
	{
		return (IList<T>)ActiveRecordMediator.FindAll(typeof(T));
	}
 
	public virtual void Save(T item)
	{
		ActiveRecordMediator.Save(item);
	}
 
	public virtual void Delete(T item)
	{
		ActiveRecordMediator.Delete(item);
	}
}