I came across a posting at Rockford lhtoka's forum that discusses a bug in the upcoming VS2005 with the windows forms binding. In a nutshell, Data binding updates all controls on a form when a PropertyChanged event is raised, except the current control. When some other control is changed, that triggers the data binding refresh. (http://www.lhotka.net/WeBlog/PermaLink.aspx?guid=37bc1b86-fbdc-45fa-be8a-2fb66f9e2447) Rocky posted one workaround in the same post and another (more managable) workaround he got from the Ms data-team at http://www.lhotka.net/WeBlog/PermaLink.aspx?guid=d8306469-7e76-4734-9811-777498808b85 Also Bill McCarthy has written an extender control to address the same issue http://msmvps.com/bill/archive/2005/10/05/69012.aspx I thought that this should be heads up for all people using VS2005 so not to struggle the issue with the entity class code.

I saw that too, very sad they didn't fix it in this release. Thanks for the links!