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.

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Command design pattern

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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