Handle multiple menu click events in one Sub
See this Stack Overflow answer, where Cody Gray explains the syntax for the two ways of registering event handlers in vb.net:


  The first involves the use of the Handles keyword, which you append to the end of the event handler method's definition. [...] The second involves the explicit use of the AddHandler statement, just like += in C#.


This means instead of statically declaring all the handled events with a Handles keyword, you write code to add the handlers yourself:

Public Sub New()

    InitializeComponents()

    AddHandler mnuEnglish.Click, AdressOf mnuEnglish_Click
    AddHandler mnuFrench.Click, AdressOf mnuEnglish_Click
    '...

End Sub


Or even better, loop through the menu items in that menu object, and assing all Click events the AdressOf mnuEnglish_Click, so you won't have the opportunity to forget updating that piece of code when you add a new language / menu item in the designer:

Public Sub New()

    InitializeComponents()

    ForEach item As ToolStripMenuItem In mnu.DropDownItems.OfType(Of ToolStripMenuItem)()
        AddHandler item.Click, AdressOf mnuEnglish_Click
    Next

End Sub