LinearGradientBrush Class
namespace Noesis | MSDN
Paints an area with a linear gradient. 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 (0,0), the upper-left corner of the area being painted, and its EndPoint is (1,1), the lower-right corner of the area being painted. The colors in the resulting gradient are interpolated along the diagonal path.
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.
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<Rectangle Width="200" Height="100">
<Rectangle.Fill>
<LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
<GradientStop Color="Blue" Offset="0"/>
<GradientStop Color="Red" Offset="1.0"/>
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
</Page>
Inheritance Hierarchy
• Brush
• LinearGradientBrush
Properties
| Name | Description | |
|---|---|---|
 |
EndPoint | Gets or sets the ending coordinates of the linear gradient |
|
StartPoint | Gets or sets the starting coordinates of the linear gradient |
Dependency Property 
Read-only
From GradientBrush
| Name | Description | |
|---|---|---|
|
ColorInterpolationMode | Gets or sets a ColorInterpolationMode enumeration that specifies how the gradient's colors are interpolated. |
|
GradientStops | Gets or sets the brush's gradient stops |
|
MappingMode | Gets or sets a BrushMappingMode enumeration that specifies whether the gradient brush's positioning coordinates are absolute or relative to the output area. |
|
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. |
Dependency Property Read-only
From Brush
| Name | Description | |
|---|---|---|
|
Opacity | Get/Set Opacity |
|
RelativeTransform | Gets or sets the transformation that is applied to the brush using relative coordinates |
|
Transform | Gets or sets the transformation that is applied to the brush. This transformation is applied after the brush's output has been mapped and positioned |
Dependency Property Read-only
From Freezable
| Name | Description | |
|---|---|---|
 |
CanFreeze | Gets a value that indicates whether the object can be made unmodifiable. |
|
IsFrozen | Gets a value that indicates whether the object is currently modifiable. |
Dependency Property Read-only
From DispatcherObject
| Name | Description | |
|---|---|---|
|
ThreadId | Gets the thread this DispatcherObject is associated with. Returns NoThreadId when this object is not attached to any thread. |
Dependency Property Read-only
Methods
From GradientBrush
| Name | Description |
|---|---|
| Clone | Hides Freezable methods for convenience |
From Brush
| Name | Description |
|---|---|
| IsTransparent | Indicates if this brush is transparent |
| TryParse | Use this method to convert a Color string into a SolidColorBrush |
From Freezable
| Name | Description |
|---|---|
| Clone | Creates a modifiable clone of the Freezable, making deep copies of the object's values. When copying the object's dependency properties, this method copies expressions (which might no longer resolve) but not animations or their current values. The cloned Freezable::IsFrozen property is false even if the source's IsFrozen property is true. |
| CloneCurrentValue | Creates a modifiable clone (deep copy) of the Freezable using its current values. The cloned object's IsFrozen property is false even if the source's IsFrozen property is true. |
| Freeze | Makes the current object unmodifiable and sets its IsFrozen property to true. |
| GetAsFrozen | Creates a frozen copy of the Freezable, using base (non-animated) property values. Because the copy is frozen, any frozen sub-objects are copied by reference. The copy's IsFrozen property is set to true. Throws if the Freezable cannot be frozen because it contains expressions or animated properties. |
| GetCurrentValueAsFrozen | Creates a frozen copy of the Freezable using current property values. Because the copy is frozen, any frozen sub-objects are copied by reference. The copy's IsFrozen property is set to true. |
From DependencyObject
| Name | Description |
|---|---|
| ClearAnimation | Clears the animation value of a property |
| ClearAnimation | Clears the animation value of a property |
| ClearLocalValue | Clears the local value of a property The property to be cleared is specified by a DependencyProperty identifier |
| CoerceValue | Coerces and validates the effective property value |
| CoerceValue | Coerces and validates the effective property value |
| DependencyPropertyChanged | Returns the PropertyChanged event |
| Destroyed | Destroyed delegate is raised when object is going to be destroyed |
| GetBaseValue | Returns the base value without animation nor coerce (this never returns Expression like GetLocalValue) |
| GetExpression | Gets the expression, if any, used to evaluate the specified property value |
| GetLocalValue | Returns the local value of a dependency property, if it exists |
| GetValue | Returns the current effective value of a dependency property on this instance of a DependencyObject |
| GetValueObject | Returns the current effective value of a dependency property on this instance of a DependencyObject as a boxed value |
| GetValueProvider | Gets the provider that returns the effective value for the specified dependency property |
| HasAnimatedProperties | Returns true if there is any animated property |
| InvalidateProperty | Re-evaluates the effective value for the specified dependency property if necessary If null is passed, a full re-evaluation could be needed |
| IsCached | Returns if the value is stored in the cache. If true, the priority is returned in the provider field |
| IsSealed | Gets a value that indicates whether this instance is currently sealed (read-only) |
| SetAnimation | Sets the animated value of a property |
| SetCurrentValue | Sets the current value of a dependency property. The current value is set on the coerce field, without modifying source or animated value |
| SetCurrentValueObject | Sets the current value of a dependency property using a boxed value |
| SetExpression | Sets the expression to be evaluated dynamically to obtain the value of the property |
| SetValue | Sets the local value of a dependency property |
| SetValueObject | Sets the local value (boxed) of a dependency property |
From DispatcherObject
| Name | Description |
|---|---|
| CheckAccess | Determines whether the calling thread has access to this DispatcherObject |
| VerifyAccess | Enforces that the calling thread has access to this DispatcherObject |
Events
LinearGradientBrush has no events