So in Visual Studio when accidently copy (ctrl-c) instead of paste (ctrl-v) you lose what was on your clipboard.
Quite annoying behavior, but you can fix it.
Tools-> Options –> check Show All Settings –> expand the Text Editor node –> select All Languages –> under Settings –> clear the Apply cut or copy commands when there is no selection.
This will change the behavior in visual studio to work like word when it comes to copy and paste.
This is a tip I read about in the Code magazine for Jan/Feb 2009.