cos mi switalo ze kiedys czytalem o bledzie w VS, i udalo mi sie wyszperac:
zerknij na https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=292118
polecam fragment:
"Visual Studio 2008 does not support adding new data sources (database or webservice) to Visual C++ projects anymore. Due to VC's changes in focus and strategy in Orcas and going forward and our resources availability to maintain Data Designer integration, we decided to reduce our support for this feature.
Projects created with Visual C++ 2005 that contain data sources will continue to work as expected as there are no breaking changes in the editor or the build system."
tak wiec pytanko: uzywasz ksiazki do VS2005, ale czy rzeczywiscie uzywasz starego VS2005 czy moze VS2008 ?