A guide to using the Microsoft .NET forms package covers such topics as form layout, custom drawing, data binding, multithreated user interfaces, and moving from MFC.
This was the book that helped me go from "using" Windows Forms to "understanding" it. The section on 2D graphics was indispensable to me in completing a custom graphics/visualization project that I was working on at the time. The tone was a little dry, but what do you expect in a programming book? Judging from his more current writing("Programming WPF"), Chris Sells has since taken his writing skills up a notch.