Sandbox

 
// Hello1.cs
public class Hello1
{
   public static void Main()
   {
      System.Console.WriteLine("Hello, World!");
   }
}

interface Storage {

 readonly attribute unsigned long length;
 [IndexGetter] DOMString key(in unsigned long index);
 [NameGetter] DOMString getItem(in DOMString key);
 [NameSetter, NameCreator] void setItem(in DOMString key, in DOMString data);
 [NameDeleter] void removeItem(in DOMString key);
 void clear();

};