Ever wondered why there’s no tutorial on how to create a Sales Order report from scratch in the RDLC? The reason is because it takes a LONG TIME! Even for an experienced developer, it takes a long time. As I previously mentioned on my article, Microsoft really needs to address this in future versions.
The reason for SetData and GetData is not because of performance reason as stated in the manual 80146B.
Bron : Confessions of a Dynamics NAV / Navision Consultant