Recommend an Appropriate Object-Orientated Design Pattern To Replace This Code

I have a menu click event that looks something like this....

Public Sub ToolbarManager_ToolClick(sender as Object, e as EventArgs)
    Case "New开发者_高级运维"
        CreateNewFile()
    Case "Save"
        SaveCurrentFile()
    Case "Exit"
        ExitApp()
    Case.......
    etc...
    etc...
End Sub

This strikes me as being 'ugly' - but I'm unsure of the 'best' way or the most appropriate way to clean it up.

Command design pattern

If the switch case is just in one place, I'd bite my lip and live with it.

If it's mushrooming everywhere, I'd try to use Replace conditional with polymorphism