I had a need to view PDF files directly within a WPF application and Stackoverflow and Google did not provide much assistance, so I set out on my own to see what I could create. It turns out, it is not that difficult. The trick is to use the WinForms support in WPF ala the WindowsFormHost control. The application is so simple, I built it start to finish in under 5 minutes and captured it in a screencast for you to check out.
I just happened upon a video put together by Jason Dolinger on the WPF MVVM (Model View ViewModel) pattern, which I found to be excellent. In this 1.5 hour video he refactors a simple application using the pattern and does a great job describing the benefits as he goes along. It is also interesting to see his use of Unity as well. Here is a direct link to the video:
http://www.lab49.com/files/videos/Jason%20Dolinger%20MVVM.wmv
And here’s a link to a blog post about it with a link to the source code:
Enjoy!
Last week, I gave a presentation at the Madison .NET User Group on an introduction to the up-and-coming Model-View-View Model (MVVM) pattern for WPF.
In the presentation, we made a very simple application that used the MVVM pattern. I’ve posted the source code to this quick and dirty app here. Note: this app takes several shortcuts and shouldn’t be used as an example of best practices, but we did build it in about 30 minutes. 
For those of you looking to learn or hone your fundamental WPF skills, I thought you might find this video beneficial. It’s a nice 11-12 minute video on what you can do with IValueConverter by the lovely Beth Massi. The video goes through an example of IValueConverter in VB.NET, but they also have some C# code to download if you like. Check it out:
http://msdn.microsoft.com/en-us/vbasic/dd367843.aspx
The IValueConverter interface is very handy when you want to convert or format a given object to your specifications, and in Beth’s example she also displays how you can use it to verify and do type validation of user edited data.
