LinearGradientBrush Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Paints an area with a linear gradient.
System.Windows::DependencyObject
System.Windows.Media::Brush
System.Windows.Media::GradientBrush
System.Windows.Media::LinearGradientBrush
Assembly: System.Windows (in System.Windows.dll)
XMLNS for XAML: Not mapped to an xmlns.
The LinearGradientBrush type exposes the following members.
| Name | Description | |
|---|---|---|
 | LinearGradientBrush() | Initializes a new instance of the LinearGradientBrush class. |
| LinearGradientBrush(GradientStopCollection, Double) | Initializes a new instance of the LinearGradientBrush class that has the specified GradientStopCollection and angle. |
| Name | Description | |
|---|---|---|
 | ColorInterpolationMode | Gets or sets a ColorInterpolationMode enumeration value that specifies how the gradient's colors are interpolated. (Inherited from GradientBrush.) |
| Dispatcher | Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.) |
| EndPoint | Gets or sets the ending two-dimensional coordinates of the linear gradient. |
| GradientStops | Gets or sets the brush's gradient stops. (Inherited from GradientBrush.) |
| MappingMode | Gets or sets a BrushMappingMode enumeration value that specifies whether the positioning coordinates of the gradient brush are absolute or relative to the output area. (Inherited from GradientBrush.) |
| Opacity | Gets or sets the degree of opacity of a Brush. (Inherited from Brush.) |
| RelativeTransform | Gets or sets the transformation that is applied to the brush using relative coordinates. (Inherited from Brush.) |
| SpreadMethod | Gets or sets the type of spread method that specifies how to draw a gradient that starts or ends inside the bounds of the object to be painted. (Inherited from GradientBrush.) |
| StartPoint | Gets or sets the starting two-dimensional coordinates of the linear gradient. |
| Transform | Gets or sets the transformation that is applied to the brush. (Inherited from Brush.) |
| Name | Description | |
|---|---|---|
| CheckAccess | Determines whether the calling thread has access to this object. (Inherited from DependencyObject.) |
| ClearValue | Clears the local value of a dependency property. (Inherited from DependencyObject.) |
| Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
| GetAnimationBaseValue | Returns any base value established for a Windows Phone dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.) |
| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| GetValue | Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ReadLocalValue | Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.) |
| SetValue | Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
  | EndPointProperty | Identifies the EndPoint dependency property. |
| StartPointProperty | Identifies the StartPoint dependency property. |
A LinearGradientBrush paints an area with a linear gradient. A linear gradient defines a gradient along a line. The line's end points are defined by the StartPoint and EndPoint properties of the linear gradient. A LinearGradientBrush brush paints its GradientStops along this line.
The default linear gradient is diagonal. In the default, the StartPoint of a linear gradient is a Point with value 0,0, the upper-left corner of the area being painted, and its EndPoint is a Point with value 1,1, the lower-right corner of the area being painted. The colors in the resulting gradient are interpolated along the diagonal path.
The following illustration shows a diagonal gradient. A line was added to highlight the interpolation path of the gradient from the start point to the end point.
The next illustration shows the same linear gradient, but with highlighted gradient stops.
It is possible to specify a gradient axis that does not completely fill area being painted. When this occurs, the SpreadMethod property determines how the remaining area is painted.
The following example creates a linear gradient with four colors and uses it to paint a Rectangle.
<StackPanel> <!-- This rectangle is painted with a vertical linear gradient. --> <Rectangle Width="200" Height="100"> <Rectangle.Fill> <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1"> <GradientStop Color="Yellow" Offset="0.0" /> <GradientStop Color="Red" Offset="0.25" /> <GradientStop Color="Blue" Offset="0.75" /> <GradientStop Color="LimeGreen" Offset="1.0" /> </LinearGradientBrush> </Rectangle.Fill> </Rectangle> </StackPanel>
The following illustration shows the resulting gradient. The gradient axis is marked with a dashed line, and the gradient stops are marked with circles.
