Ctrl + Space for normal Intellisense, and Ctrl + Shift + Space for parameter Intellisense (e.g. to see what overloads are available in a method call which you've actually already filled in). I find the latter very handy :)
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…