The keyboard shortcut for vertical block selection:
To select code block vertically in your visual studio code, use Shift + Alt and then use the mouse to select lines vertically, from top-left to bottom-right.
Shift + Alt + Select with mouse
Vertical code block selection example
This keyboard shortcut for vscode vertical select is tested on Windows 10 and Windows 11 Visual Studio Code Editors.
You may find other interesting and time-saving keyboard shortcuts in the vscode listed below: