I know this has been several years already, but I will stick to what I found here if someone else finds it on a Google search.
I found that I had no problems until I changed my Mac Control and Command key, so I just need to use Control + C, Control + V to copy and paste.
As soon as I changed them to Control + Space, I would not work in Visual Studio until I switched to Parallels Preferences โ Keyboard and unchecked the box "Enable Mac OS X keyboard shortcuts"
I assume that Cmd + Space or Ctrl + Space is a kind of shortcut to Mac OS X, and it was an override of what I was typing on my Windows machine.
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