Fade

Warning

This behavior is no longer available in the Windows Community Toolkit. Please use the effects from the Microsoft.Toolkit.Uwp.UI.Media package and the helpers such as the PipelineVisualFactory type.

The Fade animation fades objects, in and out, over time. Fade animation is applied to all the XAML elements in its parent control/panel. Fade animation doesn't affect the functionality of the control.

Try it in the sample app

Syntax

<Page ...
    xmlns:interactivity="using:Microsoft.Xaml.Interactivity"  
    xmlns:behaviors="using:Microsoft.Toolkit.Uwp.UI.Animations.Behaviors"/>

<interactivity:Interaction.Behaviors>
    <behaviors:Fade x:Name="FadeBehavior" 
            Value="0.5" 
            Duration="2500" 
            Delay="250"
            EasingType="Linear"
            AutomaticallyStart="True"/>
</interactivity:Interaction.Behaviors>

MyUIElement.Fade(value: 0.5f, duration: 2500, delay: 250, easingType: EasingType.Default).Start();
await MyUIElement.Fade(value: 0.5f, duration: 2500, delay: 250, easingType: EasingType.Default).StartAsync();  //Fade animation can be awaited

MyUIElement.Fade(value:=0.5F, duration:=2500, delay:=250, easingType:=EasingType.[Default]).Start()
Await MyUIElement.Fade(value:=0.5F, duration:=2500, delay:=250, easingType:=EasingType.[Default]).StartAsync()  ' Fade animation can be awaited

Sample Output

Properties

Property	Type	Description
Value	float	The fade value, between 0 and 1
Duration	double	The duration in milliseconds
Delay	double	The delay for the animation to begin
EasingType	EasingType	Used to describe how the animation interpolates between keyframes

EasingType

You can change the way how the animation interpolates between keyframes by defining the EasingType.

EasingType	Explanation	Graphical Explanation
Default	Creates an animation that accelerates with the default EasingType which is specified in AnimationExtensions.DefaultEasingType which is by default Cubic
Linear	Creates an animation that accelerates or decelerates linear
Back	Retracts the motion of an animation slightly before it begins to animate in the path indicated
Bounce	Creates a bouncing effect
Circle	Creates an animation that accelerates or decelerates using a circular function
Cubic	Creates an animation that accelerates or decelerates using the formula f(t) = t3
Elastic	Creates an animation that resembles a spring oscillating back and forth until it comes to rest
Quadratic	Creates an animation that accelerates or decelerates using the formula f(t) = t2
Quartic	Creates an animation that accelerates or decelerates using the formula f(t) = t4
Quintic	Create an animation that accelerates or decelerates using the formula f(t) = t5
Sine	Creates an animation that accelerates or decelerates using a sine formula

Methods

Methods	Return Type	Description
Fade(AnimationSet, Single, Double, Double, EasingType)	AnimationSet	Animates the opacity of the the UIElement
Fade(UIElement, Single, Double, Double, EasingType)	AnimationSet	Animates the opacity of the the UIElement

Examples

• Use this to create chaining animations with other animations. Visit the AnimationSet documentation for more information.

  Sample Code

  var anim = MyUIElement.Fade(0.5f).Blur(5).Rotate(30);
  anim.SetDurationForAll(2500);
  anim.SetDelay(250);
  anim.Completed += animation_completed;
  anim.Start();
  

  Dim anim = MyUIElement.Fade(0.5F).Blur(5).Rotate(30)
  anim.SetDurationForAll(2500)
  anim.SetDelay(250)
  AddHandler anim.Completed, AddressOf animation_completed
  anim.Start()
  

  Sample Output

  

Sample Project

Fade Behavior Sample Page Source. You can see this in action in the Windows Community Toolkit Sample App.

Requirements

Device family	Universal, 10.0.16299.0 or higher
Namespace	Microsoft.Toolkit.Uwp.UI.Animations
NuGet package	Microsoft.Toolkit.Uwp.UI.Animations

API

• Fade source code

Related Topics

• AnimationSet Class
• Storyboard Class