http://blogs.msdn.com/llobo/archive/2008/06/05/new-features-scrollviewer-isdeferredscrollingenabled-alternationcount-ieditablecollectionview.aspx3 more features which go hand in hand are the: · ScrollViewer.IsDeferredScrollingEnabled · AlternationCount · IEditableCollectionView All the above have been used in a sample which looks like this - it supports add/delete/cancel (escape key) operationsen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/llobo/archive/2008/06/05/new-features-scrollviewer-isdeferredscrollingenabled-alternationcount-ieditablecollectionview.aspx#8577736Fri, 06 Jun 2008 15:40:50 GMT91d46819-8472-40ad-a661-2c78acb4018c:8577736Dew Drop &ndash; June 6, 2008 | Alvin Ashcraft's Morning Dew<p>PingBack from <a rel="nofollow" target="_new" href="http://www.alvinashcraft.com/2008/06/06/dew-drop-june-6-2008/">http://www.alvinashcraft.com/2008/06/06/dew-drop-june-6-2008/</a></p> http://blogs.msdn.com/llobo/archive/2008/06/05/new-features-scrollviewer-isdeferredscrollingenabled-alternationcount-ieditablecollectionview.aspx#8586547Mon, 09 Jun 2008 20:13:44 GMT91d46819-8472-40ad-a661-2c78acb4018c:8586547John Garland<p>Lester - you may want to call out that these new features are specific to the .Net 3.5 SP1 framework, due out later this year. &nbsp;It is not &quot;obvious&quot; from the content, other than the Tags listed at the end (which are not always displayed in RSS Readers.) &nbsp;Perhaps editing / rewording the first sentence to read &quot;3 more features available in .Net 3.5 SP1 which go hand in hand are the:...&quot;</p>