"Pro WPF with VB 2008: Windows Presentation Foundation with .NET 3.5"
You can use one of two formats??”either #rrggbb or #aarrggbb (the difference being that the latter includes the alpha value). You need only two digits to supply the A, R, G, and B values because they??™re all in hexadecimal notation. Here??™s an example that creates the same color as in the previous code snippets using #aarrggbb notation:
Here the alpha value is FF (255), the red value is FF (255), and the green and blue values are 0. CHAPTER 7 n CLASSIC CONTROLS 185 nNote Brushes support automatic change notification. In other words, if you attach a brush to a control and change the brush, the control updates itself accordingly. This works because brushes derive from the System.Windows.Freezable class. The name stems from the fact that all freezable objects have two states??” a readable state and a read-only (or ???frozen???) state. The Background and Foreground properties aren??™t the only details you can set with a brush. You can also paint a border around controls (and some other elements, such as the Border element) using the BorderBrush and BorderThickness properties. BorderBrush takes a brush of your choosing, and BorderThickness takes the width of the border in deviceindependent units. You need to set both properties before you??™ll see the border.