Turn Off Whole Line Copy in Visual Studio
I know this is old question, but as Macros are no longer natively supported in newer versions of Visual Studio, I thought I'd shared my new extension (cause I couldn't find any existing extensions): https://marketplace.visualstudio.com/items?itemName=KiwiProductions.CopyOnlySelection
There is the option in the settings: Go to Tools - Options -> Text Editor -> ALl Languages -> Apply Cut or Copy commands to blank lines when there is no selection
Also if you accidentally copied something into clipboard you can use following shortcut: Ctrl+Shift+V – cycle through the clipboard ring.
EDITED: It seems there is no option to turn of it because by default Ctrl-C is assigned to Edit.Copy command, which copies the current line if nothing is selected. However you can assign following macro to Ctrl-C and it should fix the issue:
Sub CopyOnlyIfSelection()
Dim s As String = DTE.ActiveDocument.Selection.Text
Dim n As Integer = Len(s)
If n > 0 Then
DTE.ActiveDocument.Selection.Copy()
End If
End Sub