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416 Microsoft Visual Studio 2010: A Beginner’s Guide
StaticResource markup extension. Further, think about the amount of work you would
need to do if you wanted to change the background color of all buttons, resulting in
recoding each individual button. However, with the StaticResource markup extension, you
can change the color in the SolidColorBrush resource, and the BackGround of all buttons
will change without any additional work. Figure B-4 shows each of the buttons. Though
you can’t tell the background color in the gray scale of this book, I promise that they are
yellow.
Summary
This appendix introduced you to XAML, which is the XML document type used to build
user interfaces for WPF and Silverlight. You learned that elements map to classes and
attributes map to class properties. You also learned how to specify property elements
to gain more control than what you can get with attributes alone. Finally, you learned
about the syntax of a markup extension and how the StaticResource markup extension
allows you to reference resources. You’re now ready to approach the WPF and Silverlight
chapters in this book, which use XAML heavily to build their user interfaces.
Figure B-4 Two Buttons using the same resource via a markup extension