When WPF - the new .net technology- arrived, Microsoft try to provide some tools makes life easy to WPF Developers, one of this tools was Expression Blend, we will try to show some features about it in this topic.
Try to download it form Microsoft web site, then run it and choose new Project - WPF Application (*.exe):
You can now choose your name, folder and .net language you want.
Click View-Active Document View then click split view to show both code and design view: