public ContentResult RSSFeed()

{ Story[] stories = GetAllStories(); // Fetch them from the database or wherever // Build the RSS feed document string encoding = Response.ContentEncoding.WebName; XDocument rss = new XDocument(new XDeclaration("1.0", encoding, "yes"), new XElement("rss", new XAttribute("version", "2.0"), new XElement("channel", new XElement("title", "Example RSS 2.0 feed"), from story in stories select new XElement("item", new XElement("title", story.Title), new XElement("description", story.Description), new XElement("link", story.Url) ) ) ) ); return Content(rss.ToString(), "application/rss+xml");
}

public override void ExecuteResult(ControllerContext context) {if (context == null) {throw new ArgumentNullException("context");}if (context.IsChildAction) {throw new InvalidOperationException(MvcResources.RedirectAction_CannotRedirectInChildAction);}string destinationUrl = UrlHelper.GenerateContentUrl(Url, context.HttpContext);context.Controller.TempData.Keep();context.HttpContext.Response.Redirect(destinationUrl, false /* endResponse */);
}

class CityData { public string city; public int temperature; }
public JsonResult WeatherData()
{ var citiesArray = new[] { new CityData { city = "London", temperature = 68 }, new CityData { city = "Hong Kong", temperature = 84 } }; return Json(citiesArray);
}

public FilePathResult DownloadReport()

{ string filename = @"c:\\files\\somefile。pdf"; return File(filename, "application/pdf", "AnnualReport。pdf");
}

public FileContentResult GetImage(int productId)

{ var product = productsRepository.Products.First(x => x.ProductID == productId); return File(product.ImageData, product.ImageMimeType);
}
<img src="<%: Url.Action("GetImage", "Products",  new { Model.ProductID }) %>" />

public FileStreamResult ProxyExampleDotCom()

{ WebClient wc = new WebClient(); Stream stream = wc.OpenRead(http://www.studyofnet.com/); return File(stream, "text/html");
}