Статья
11/18/2011

VisualTransition Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Represents the visual behavior that occurs when the control transitions from one state to another.

Inheritance Hierarchy

System.Object
System.Windows.DependencyObject
System.Windows.VisualTransition

Namespace: System.Windows
Assembly: System.Windows (in System.Windows.dll)

Syntax

'Declaration
<ContentPropertyAttribute("Storyboard", True)> _
Public Class VisualTransition _
    Inherits DependencyObject

[ContentPropertyAttribute("Storyboard", true)]
public class VisualTransition : DependencyObject

<VisualTransition .../>
-or-
<VisualTransition>
  singleStoryboard
</VisualTransition>

XAML Values

singleStoryboard
Exactly one Storyboard object element.

The VisualTransition type exposes the following members.

Constructors

	Name	Description
	VisualTransition	Initializes a new instance of the VisualTransition class.

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Properties

	Name	Description
	Dispatcher	Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
	From	Gets or sets the name of the VisualState to transition from.
	GeneratedDuration	Gets or sets the amount of time it takes to move from one state to another.
	GeneratedEasingFunction	Gets or sets the easing function applied to the generated animations.
	Storyboard	Gets or sets the Storyboard that occurs when the transition occurs.
	To	Gets or sets the name of the VisualState to transition to.

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Methods

	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 Silverlight 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.)

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Remarks

You can specify the visual behavior of a control when it transitions between states by adding VisualTransition objects to the ControlTemplate. When you create a VisualTransition, you specify one or more of the following:

The time it takes for a transition between states to occur by setting the GeneratedDuration property.
Additional changes in the control's appearance that occur at the time of the transition by setting the Storyboard property.
When the VisualTransition is applied by setting the To and From properties.

Examples

The following example creates a VisualTransition that specifies that when the user moves the mouse away from the control, the control's border changes to blue, then to yellow, then to black in 1.5 seconds. For the entire example, see Customizing the Appearance of an Existing Control by Using a ControlTemplate.

<!--Take one and a half seconds to transition from the
    MouseOver state to the Normal state. 
    Have the SolidColorBrush, BorderBrush, fade to blue, 
    then to yellow, and then to black in that time.-->
<VisualTransition From="MouseOver" To="Normal" 
                      GeneratedDuration="0:0:1.5">
  <Storyboard>
    <ColorAnimationUsingKeyFrames
      Storyboard.TargetProperty="Color"
      Storyboard.TargetName="BorderBrush"
      FillBehavior="HoldEnd" >

      <ColorAnimationUsingKeyFrames.KeyFrames>

        <LinearColorKeyFrame Value="Blue" 
                             KeyTime="0:0:0.5" />
        <LinearColorKeyFrame Value="Yellow" 
                             KeyTime="0:0:1" />
        <LinearColorKeyFrame Value="Black" 
                             KeyTime="0:0:1.5" />

      </ColorAnimationUsingKeyFrames.KeyFrames>
    </ColorAnimationUsingKeyFrames>
  </Storyboard>
</VisualTransition>

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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