<DiscreteObjectKeyFrame ...> <DiscreteObjectKeyFrame.Value> objectValue </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame ...> -or- </DiscreteObjectKeyFrame Value="objectAsAttribute"...>
An object element that declares the value of the object to use for the key frame.
A string attribute value that can be converted to an object value.
The DiscreteObjectKeyFrame class has these types of members:
The DiscreteObjectKeyFrame class has these constructors.
|DiscreteObjectKeyFrame||Initializes a new instance of the DiscreteObjectKeyFrame class.|
The DiscreteObjectKeyFrame class has these methods. It also inherits methods from the Object class.
|ClearValue||Clears the local value of a dependency property. (Inherited from DependencyObject)|
|GetAnimationBaseValue||Returns any base value established for a dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject)|
|GetValue||Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject)|
|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)|
The DiscreteObjectKeyFrame class has these properties.
|Read-only||Gets the CoreDispatcher that this object is associated with. (Inherited from DependencyObject)|
|Read/write||Gets or sets the time at which the key frame's target Value should be reached. (Inherited from ObjectKeyFrame)|
|Read/write||Gets or sets the key frame's target value. (Inherited from ObjectKeyFrame)|
Key-frame animations permit more than one target value that is reached at a point along the animation timeline. In other words each key frame can specify a different intermediate value, and the last key frame reached is the final animation value. By specifying multiple values to animate, you can make more complex animations.
DiscreteObjectKeyFrame is the only keyframe type permitted in an ObjectAnimationUsingKeyFrames. There are no linear interpolations or other interpolation logic that's possible for changing object values as the animation runs. The old object is removed at the KeyTime and the new object that is the value of the keyframe with that KeyTime replaces it.
There are several scenarios where using ObjectAnimationUsingKeyFrames rather than a typed animation is useful. Some of them are:
- Creating the Storyboard for a visual state and using a value that is a StaticResource reference, rather than one of the typed values. This gives you the ability to reference system theme resources from a visual state. For more info see Storyboarded animations for visual states.
- Animating int or byte values.
- Animating structures used in UI definitions and visual states, such as GridLength. You can't animate the properties of the structure but you can swap the entire structure value with a DiscreteObjectKeyFrame and a new GridLength.
For more info on how to use key-frame animations, see Key-frame animations and easing function animations.
Minimum supported client
|Windows 8 [Windows Store apps only]|
Minimum supported server
|Windows Server 2012 [Windows Store apps only]|
Minimum supported phone
|Windows Phone 8.1 [Windows Runtime apps only]|
- Storyboarded animations
- Key-frame animations and easing function animations
- Storyboarded animations for visual states