To help you walk thru some of support we have added for sample data inside Blend 3, I wrote a hands-on-lab that takes you thru the basic experience of building a simple master/detail visualization. While there are a lot more scenarios that are possible with the support for sample data in Blend 3 (some of which are not available in the public preview build, and I will in write in detail about over the next few days), you can get a first-hand experience here for the following:
Download the hands-on-lab document here (because of the ISP that I use for hosting these files, you will have to rename this .zip file to .docx), and the starting project (to save you some time with the graphics, styling, and layout) here.
Blend 3 adds really cool support for the DataGrid control (for both Silverlight 3 and WPF Toolkit ).
Looking forward for the Future Posts.
I'm confused on how to setup the dummy data to be called only when in the design mode and call actual live data when the soultion is running. Hopefuly future posts will highlight the various actributes in detail... cant wait!