31.4. Logical Trees, Visual Trees and Default Templates
There are a few more preparatory topics to investigate before you begin learning how to build custom controls. Specifically, you need to learn the distinction between a logical tree, a visual tree and a default template. When you are typing XAML into Visual Studio 2010, Expression Blend, or a tool such as kaxaml.exe, your markup is the logical view of the XAML document. As well, if you author C# code that adds new items to a StackPanel control, you are inserting new items into the logical tree. Essentially, a logical view represents how your content will be positioned within the various layout managers for a main Window (or another root element, such as Page or NavigationWindow).
However, ...
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