Shing is a library for the .Net Framework, written in C# that parses Amazon Wish Lists.
For now, you need to pull the source down and compile it, but eventually this will be a Nuget package.
Then just add the Shing.dll file as a reference to your project and try the following sample:
var items = WishList.ScrapeUrl("http://www.amazon.com/gp/registry/wishlist/3ON5W8HBTKUOI/ref=wl_web");
foreach(var item in items) {
Console.WriteLine( item.FriendlyName + " - " + item.Price.ToString("C") );
}