Beginning Web Development, Silverlight, and ASP.NET AJAX

CHAPTER 16 ■ PROGRAMMING SILVERLIGHT WITH XAML AND JAVASCRIPT 383
You can see the result of this in Figure 16-3. As the radius is set to 0.1 on both x and y,
five circles are used to paint the gradient; and as the SpreadMethod is set to Reflect, the
gradient goes from black to white, and then white to black, and then black to white, and
so on.
Figure 16-3. Using the RadiusX, RadiusY, and SpreadMethod attributes
The ImageBrush
In addition to filling a space with colors or gradients, you can also fill one with pictures
using the ImageBrush. It offers a number of attributes that can be used to set the behavior,
in particular how you control the image’s aspect ratio and tiling behavior.
Here’s an example of XAML to define filling a rectangle with an image using the
ImageBrush:
You determine how the image is stretched using the Stretch attribute. This can take
several different stretch modes:
None: Renders the image without changing it in any way.
Uniform: Scales the image to fit the dimensions of the fill area without changing the
aspect ratio.