Select Top n Random Items

class Item
{
 public string Name { get; set; }
}
...
var list = new List { 
 new Item() { Name="Item1" },
 new Item() { Name="Item2" },
 new Item() { Name="Item3" },
 new Item() { Name="Item4" },
 new Item() { Name="Item5" },
};

Random rnd = new Random();

var items = from i in list
 orderby rnd.Next()
 select i;

var top = items.Take(3);

.NET 3.5 RSS Feed Handler

public void ProcessRequest(HttpContext context)
{
 SyndicationFeed feed = GetNoveltiesFeed();

 var output = new StringWriter();
 var writer = new XmlTextWriter(output);

 new Rss20FeedFormatter(feed).WriteTo(writer);

 context.Response.ContentType = "application/rss+xml";
 context.Response.Write(output.ToString());
}

Получить top, left static-элемента

var div = $('#div1');
var top = Math.round(div.offset().top);
var left = Math.round(div.offset().left);

Remove html-tags from string

var value = Regex.Replace(value, "<[^>]*?>", string.Empty, RegexOptions.IgnoreCase);