How can I save the activities of a calendar in a ms sqlserver 2008 database, wich is the right data structure?, how can achieve this task using RIA WCF?, I have readed the complete help online about this control, but it don't explains in some way how can I do this, by another hand, I am exploring the samples, but them don´t save the activities of a calendar in any place, so I'm more confused than before, :(