Timeline.Duration Property

Definition

Gets or sets the length of time for which this timeline plays, not counting repetitions.

public System.Windows.Duration Duration { get; set; }
Property Value

The timeline's simple duration: the amount of time this timeline takes to complete a single forward iteration. The default value is Automatic.

Examples

ParallelTimeline and Storyboard are types of TimelineGroup objects. The duration of a TimelineGroup is determined by the duration of its child timelines. For example, the Storyboard below will run for six seconds (duration of 6 seconds) because that is when its last child Timeline (DoubleAnimation) ends.

Note

Note: code has been omitted from the following examples, which are provided for illustrative purposed only.

[xaml]

...  
  <Storyboard>  
    <DoubleAnimation Duration="0:0:2" …/>  
    <DoubleAnimation Duration="0:0:4" BeginTime="0:0:2" …/>  
  </Storyboard>   
...  

Examples of <Type>Animations include DoubleAnimation, PointAnimation, ColorAnimation, etc. If no Duration is specified for these types of animations, they will run for one second.

[xaml]

...  
  <!-- With no Duration specified, this animation will run for   
       one second -->  
  <DoubleAnimation .../>  
...  

Examples of <Type>AnimationUsingKeyFrames include DoubleAnimationUsingKeyFrames, PointAnimationUsingKeyFrames, etc. If no Duration is specified for these types of animations they will run until all key frames are finished.

[xaml]

...  
  <Storyboard>  

    <!-- This key frame animation will end at 4.5 seconds  
         Because that is when its last KeyFrame KeyTime ends. -->  
    <DoubleAnimationUsingKeyFrames ...>  
      <LinearDoubleKeyFrame ... KeyTime="0:0:3" />  
      <DiscreteDoubleKeyFrame ... KeyTime="0:0:3.5" />  
      <DiscreteDoubleKeyFrame ... KeyTime="0:0:4" />  
      <DiscreteDoubleKeyFrame ... KeyTime="0:0:4.5" />  
    </DoubleAnimationUsingKeyFrames>  
  </Storyboard>   
...  

Remarks

A timeline's simple duration constitutes the time for a single forward iteration versus the total play time, which includes repetitions.

Default Duration Behavior

The behavior of a Duration structure with a value of Automatic depends on the type of timeline:

Timeline Behavior
Timeline Undetermined (Timeline is abstract)
ParallelTimeline,

Storyboard,

TimelineGroup
Expands to fit child timelines
<Type>Animation (Known as a "From/To/By" or "basic" animations) 1 second
<Type>AnimationUsingKeyFrames (Known as key frame animations) Sum of all key frame KeyTime values

Dependency Property Information

Identifier field DurationProperty
Metadata properties set to true None

Applies to