Storyboard.Pause Method

Definition

Namespace:

System.Windows.Media.Animation

Assembly:

PresentationFramework.dll

Pauses the Clock that was created for this Storyboard.

Overloads

Pause()	Pauses the Clock that was created for this Storyboard.
Pause(FrameworkContentElement)	Pauses the Clock of the specified FrameworkContentElement associated with this Storyboard.
Pause(FrameworkElement)	Pauses the Clock of the specified FrameworkElement associated with this Storyboard.

Pause()

Pauses the Clock that was created for this Storyboard.

C#

public void Pause();

Remarks

This method pauses the storyboard, but has no discernible effect if it is not active or currently paused. As a side effect, all associated children are also paused.

A controllable storyboard can pause, resume, seek, stop, and be removed. To make a storyboard controllable in code, you must use the appropriate overload of the storyboard's Begin method and specify true to make it controllable. For an example, see How to: Control a Storyboard After It Starts.

Beginning a Paused Storyboard

When you Begin a storyboard that was paused, it appears to resume and restart. However, that is not what actually happens. The Begin method actually replaces the paused Storyboard with a new unpaused version. Each time the Begin method is called, clock objects are created for the storyboard. These clocks are distributed to the properties they animate. So, when the Begin method is called again, it does not restart its clocks; it replaces them with new clocks.

Pause(FrameworkContentElement)

Pauses the Clock of the specified FrameworkContentElement associated with this Storyboard.

C#

public void Pause(System.Windows.FrameworkContentElement containingObject);

Parameters

containingObject

FrameworkContentElement

The object specified when the Begin(FrameworkContentElement, Boolean) method was called. This object contains the Clock objects that were created for this storyboard and its children.

Examples

The following example uses a controllable storyboard to animate a TextEffect. The TextEffect is contained within a FrameworkContentElement's name scope.

C#

/*
    This example shows how to control
    a storyboard after it has started.

*/

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Media.Animation;
using System.Windows.Documents;

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{
    public class FrameworkContentElementControlStoryboardExample : FlowDocument
    {
    
        private Storyboard myStoryboard;
        
        public FrameworkContentElementControlStoryboardExample()
        {
        
            // Create a name scope for the document.
            NameScope.SetNameScope(this, new NameScope());        
            this.Background = Brushes.White;
            
            // Create a run of text.
            Run theText = new Run( 
                "Lorem ipsum dolor sit amet, consectetuer adipiscing elit." + 
                "Ut non lacus. Nullam a ligula id leo adipiscing ornare." +
                " Duis mattis. ");   
                
            // Create a TextEffect
            TextEffect animatedSpecialEffect = new TextEffect();
            animatedSpecialEffect.Foreground = Brushes.OrangeRed;
            animatedSpecialEffect.PositionStart = 0;
            animatedSpecialEffect.PositionCount = 0;
            
            // Assign the TextEffect a name by 
            // registering it with the page, so that
            // it can be targeted by storyboard
            // animations            
            this.RegisterName("animatedSpecialEffect", animatedSpecialEffect);  
            
            // Apply the text effect to the run.
            theText.TextEffects = new TextEffectCollection();
            theText.TextEffects.Add(animatedSpecialEffect);
            
            // Create a paragraph to contain the run.
            Paragraph animatedParagraph = new Paragraph(theText);
            animatedParagraph.Background = Brushes.LightGray;
            animatedParagraph.Padding = new Thickness(20);
   
            this.Blocks.Add(animatedParagraph);            
            BlockUIContainer controlsContainer = new BlockUIContainer();                
            
            //
            // Create an animation and a storyboard to animate the
            // text effect.
            //
            Int32Animation countAnimation = 
                new Int32Animation(0, 127, TimeSpan.FromSeconds(10)); 
            Storyboard.SetTargetName(countAnimation, "animatedSpecialEffect");
            Storyboard.SetTargetProperty(countAnimation, 
                new PropertyPath(TextEffect.PositionCountProperty));
            myStoryboard = new Storyboard();
            myStoryboard.Children.Add(countAnimation);
            
            //
            // Create some buttons to control the storyboard
            // and a panel to contain them.
            //
            StackPanel buttonPanel = new StackPanel();
            buttonPanel.Orientation = Orientation.Vertical;
            Button beginButton = new Button();
            beginButton.Content = "Begin";
            beginButton.Click += new RoutedEventHandler(beginButton_Clicked);            
            buttonPanel.Children.Add(beginButton);
            Button pauseButton = new Button();
            pauseButton.Content = "Pause";
            pauseButton.Click +=new RoutedEventHandler(pauseButton_Clicked);
            buttonPanel.Children.Add(pauseButton);
            Button resumeButton = new Button();
            resumeButton.Content = "Resume";
            resumeButton.Click +=new RoutedEventHandler(resumeButton_Clicked);
            buttonPanel.Children.Add(resumeButton);
            Button skipToFillButton = new Button();
            skipToFillButton.Content = "Skip to Fill";
            skipToFillButton.Click +=new RoutedEventHandler(skipToFillButton_Clicked);
            buttonPanel.Children.Add(skipToFillButton);
            Button setSpeedRatioButton = new Button();
            setSpeedRatioButton.Content = "Triple Speed";
            setSpeedRatioButton.Click +=new RoutedEventHandler(setSpeedRatioButton_Clicked);
            buttonPanel.Children.Add(setSpeedRatioButton);
            Button stopButton = new Button();
            stopButton.Content = "Stop";
            stopButton.Click +=new RoutedEventHandler(stopButton_Clicked);
            buttonPanel.Children.Add(stopButton);
            Button removeButton = new Button();
            removeButton.Content = "Remove";
            removeButton.Click +=new RoutedEventHandler(removeButton_Clicked);
            buttonPanel.Children.Add(removeButton); 
   
            controlsContainer.Child = buttonPanel; 
            this.Blocks.Add(controlsContainer);
        }
        
        // Begins the storyboard.
        private void beginButton_Clicked(object sender, RoutedEventArgs args)
        {
            // Specifying "true" as the second Begin parameter
            // makes this storyboard controllable.
            myStoryboard.Begin(this, true);          
        }
        
        // Pauses the storyboard.
        private void pauseButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Pause(this);          
        }
        
        // Resumes the storyboard.
        private void resumeButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Resume(this);          
        }     
        
        // Advances the storyboard to its fill period.
        private void skipToFillButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.SkipToFill(this);          
        } 
        
        // Updates the storyboard's speed.
        private void setSpeedRatioButton_Clicked(object sender, RoutedEventArgs args)
        {
            // Makes the storyboard progress three times as fast as normal.
            myStoryboard.SetSpeedRatio(this, 3);          
        }           
        
        // Stops the storyboard.
        private void stopButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Stop(this);          
        }     
        
        // Removes the storyboard.
        private void removeButton_Clicked(object sender, RoutedEventArgs args)
        {
             myStoryboard.Remove(this);          
        }           
    }
}

Remarks

This method pauses the storyboard, but has no discernible effect if it is not active or currently paused. As a side effect, all associated children are also paused.

Seeking a paused storyboard does not resume it. The only way to resume a paused storyboard is to use the Resume method. Calling the Begin method again replaces the paused storyboard with a new one, which has the appearance of resuming it.

To interactively control this storyboard, you must use the same containingObject parameter when calling the interactive methods that you used to begin the storyboard. A controllable storyboard can pause, resume, seek, stop, and be removed. To make a storyboard controllable in code, you must use the appropriate overload of the storyboard's Begin method and specify true to make it controllable. Fro an example, see How to: Control a Storyboard After It Starts.

Pausing a storyboard's clock triggers the CurrentGlobalSpeedInvalidated event.

Beginning a Paused Storyboard

When you Begin a storyboard that was paused, it appears to resume and restart. However, that is not what actually happens. The Begin method actually replaces itself with an unpaused version. Each time the Begin method is called, clock objects are created for the storyboard. These clocks are distributed to the properties they animate. So, when the Begin method is called again, it does not restart its clocks; it replaces them with new clocks.

See also

• Resume(FrameworkContentElement)

Pause(FrameworkElement)

Pauses the Clock of the specified FrameworkElement associated with this Storyboard.

C#

public void Pause(System.Windows.FrameworkElement containingObject);

Parameters

containingObject

FrameworkElement

The object specified when the Begin(FrameworkElement, Boolean) method was called. This object contains the Clock objects that were created for this storyboard and its children.

Remarks

This method pauses the storyboard, but has no discernible effect if it is not active or currently paused. As a side effect, all associated children are also paused.

Seeking a paused storyboard does not resume it. The only way to resume a paused storyboard is to use the Resume method. Calling the Begin method again replaces the paused storyboard with a new one, which has the appearance of resuming it.

To interactively control this storyboard, you must use the same containingObject parameter when calling the interactive methods that you used to begin the storyboard. A controllable storyboard can pause, resume, seek, stop, and be removed. To make a storyboard controllable in code, you must use the appropriate overload of the storyboard's Begin method and specify true to make it controllable. For an example, see How to: Control a Storyboard After It Starts.

Pausing a storyboard's clock triggers the CurrentGlobalSpeedInvalidated event.

Beginning a Paused Storyboard

When you Begin a storyboard that was paused, it appears to resume and restart. However, that is not what actually happens. The Begin method actually replaces itself with an unpaused version. Each time the Begin method is called, clock objects are created for the storyboard. These clocks are distributed to the properties they animate. So, when the Begin method is called again, it does not restart its clocks; it replaces them with new clocks.

See also

• Resume(FrameworkElement)