 <p>It turns out that <code>MainMenu</code> has been retired in 3.5 and <code>MenuStrip</code> is the one to be used for the menu. <code>MainMenu</code> is still somewhat compatible but with quirks.</p> <p><a href="http://www.c-sharpcorner.com/uploadfile/mahesh/menustrip-in-C-Sharp/" rel="nofollow">http://www.c-sharpcorner.com/uploadfile/mahesh/menustrip-in-C-Sharp/</a></p>