One of the things I’ve noticed about editing XAML files in Visual Studio 2008 is that sometimes you’ll need to close the file you’re working on then re-open it in order to see certain changes take effect, in particular when you change the ImageSource attribute on an element. That took me a while to figure out. There are few things more frustrating than stumbling on a bug in the IDE when you’re trying to learn an entirely new way of building apps.
Another interesting thing is that you apparently need to specifically tell elements to be a certain height/width. For instance, if you have an element inside another rectangle, don’t expect it to inherit the size of its parent…it won’t fill that space unless you tell it to!
