Brushes: As you learn in my
previous article part 1 a brush is used to describe the background of a button, the
foreground of text, and the fill of a shape and all brushes classes are inherit from System.Windows.Media.Brush and give you
more exotic effects.
Here we discuss about the second
Brush class that is LinearGradientBrush.
LinearGradientBrush: The LinearGradientBrush allows you to create a blended fill that
changes from one color to another a linear gradient blends two or more colors across a line, the gradient axis.
You use GradientStop objects to specify the colors in the gradient and their
positions. In simple words we can describe the LinearGradientBrush as it paints
an area using a radial gradient fill, which is similar to a linear gradient
except it radiates out in a circular pattern starting from a center point.
Example of an LinearGradientBrush
Xaml Code
<Window
x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow"
Height="350"
Width="525">
<Rectangle
Width="70"
Height="70">
<Rectangle.Fill>
<LinearGradientBrush>
<GradientStop
Color="Blue"
Offset="0.1"
/>
<GradientStop
Color="Pink"
Offset="0.9"
/>
<GradientStop
Color="Black"
Offset="1.1"
/>
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
</Window>
VB code
Dim Rectangle1
As New
Rectangle()
Rectangle1.Width = 70
Rectangle1.Height = 70
' Create a LinearGradientBrush and use it to
' paint the rectangle.
Dim Brush As
New
LinearGradientBrush()
Brush.GradientStops.Add(New GradientStop(Colors.blue,
0.1))
Brush.GradientStops.Add(New GradientStop(Colors.pink,
0.9))
Brush.GradientStops.Add(New
GradientStop(Colors.black,1.1))
Rectangle1.Fill = Brush
Output Window
Conclusion
Hope this article will help you
understand the working of LinearGradientBrush in WPF. Remaining types of brushes
will explain in my next articles.