http://msmvps.com/blogs/bill/archive/2008/04/09/more-on-implied-interfaces.aspxIf you read section 12.2 of the Common Language Infrastructure (CLI) Partition II document, you&#39;ll see the following part in regards to interface implementation: If there are any virtual methods in the interface that still have empty slots, see ifenCommunityServer 2008.5 SP2 (Build: 40407.4157)http://msmvps.com/blogs/bill/archive/2008/04/09/more-on-implied-interfaces.aspx#1585923Mon, 14 Apr 2008 02:23:29 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1585923bill<p>Yep. &nbsp;And if you factor any of those members into a base class, then you're hosed. &nbsp;What Paul is suggesting won't address that, and will most likely prevent VB from ever being able to address that scenario even though the runtime supports it :(</p> <div style="clear:both;"></div><img src="http://msmvps.com/aggbug.aspx?PostID=1585923" width="1" height="1">http://msmvps.com/blogs/bill/archive/2008/04/09/more-on-implied-interfaces.aspx#1584312Sat, 12 Apr 2008 13:58:34 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1584312Kathleen<p>Bill,</p> <p>Here's a link to a great scenario for implicit/implied interfaces.</p> <p><a rel="nofollow" target="_new" href="http://blogs.msdn.com/alexj/archive/2008/04/09/intellisense-what-properties-are-required.aspx">blogs.msdn.com/.../intellisense-what-properties-are-required.aspx</a></p> <p>AFAICT, this just won't work in VB.</p> <p>Kathleen</p> <div style="clear:both;"></div><img src="http://msmvps.com/aggbug.aspx?PostID=1584312" width="1" height="1">http://msmvps.com/blogs/bill/archive/2008/04/09/more-on-implied-interfaces.aspx#1578800Wed, 09 Apr 2008 02:57:01 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1578800Panopticon Central<img src="http://msmvps.com/aggbug.aspx?PostID=1578800" width="1" height="1">