Well, the singleton-pattern has been around for quite a while, and I think it’s one the my most used (and for the longest time applied) patterns.

So far I implemented the singleton like this:

class Singleton
{
private static Singleton _instance;
public static Instance
{
get
{
if (_instance == null)
_instance = new Singleton();
return _instance;
}
}
}

This did the trick so far, but recently I stumbled across a MSDN article that cleared a better and much shorter way to create a singleton:

sealed class Singleton
{
private Instance() {}
public static readonly Instance = new Singleton();
}