How to turn on tooltips in Visual Studio

How can I turn on tooltips for functions ? I mean if I want to call a function I have to insert proper parameters into that function. Normally Visual Studio shows a tooltip which shows hints about that function(parameters,desc开发者_运维问答riptions etc). However somehow this tooltip doesn't show. How can I turn it on ?

Have you tried Ctrl+Shift+Space?

I have the same problem. Tried all the button combinations:

Ctrl+Space
Ctrl+ +
Ctrl+Shift+Space

and checked settings Tools > Options > Text Editor But nothing helped me. Problem was solved just by restart Visual Studio.

In the latest VS software:

Only thing that works for me is "Hold Alt and press Enter for popup". No need to click the popup marker on the far left anymore..