https://www.dotnetzone.gr:443/cs/blogs/abekiaris/archive/2009/06/02/automatic-properties-for-xpo.aspx  The problem Xpo in order to support transactions implements some special kind of property setters like private string lastName; public string LastName { get { return lastName; } set { string oldValue = lastName; if (oldValue == value) return; lastNameelCommunityServer 2.1 SP3 (Build: 20423.1)