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ClockController.SkipToFill Method

Advances the current time of the target Clock to the end of its active period.

Namespace: System.Windows.Media.Animation
Assembly: PresentationCore (in presentationcore.dll)

public void SkipToFill ()
public void SkipToFill ()
public function SkipToFill ()
You cannot use methods in XAML.

This method advances the target clock's current time to the end of its active period; the clock's behavior at this point is specified by the FillBehavior setting of its Timeline. If the timeline's FillBehavior property is set to HoldEnd, the clock fills; if the property is set to Stop, the clock stops.

This method has an effect only if the target clock's CurrentState is Active.

This method has no effect on the timing tree until the next time a tick is processed. As a side-effect, the appropriate events also will not be raised until then.

Advancing a storyboard to its fill period triggers the CurrentGlobalSpeedInvalidated and CurrentStateInvalidated events.

A Clock object's ClockController property enables you to interactively start, pause, resume, seek, advance the clock to its fill period, and stop the clock. Only the root clock of a timing tree can be interactively controlled.

NoteNote:

There are other ways to interactively control animations that don't require you to work directly with clocks: you can also use Storyboards. Storyboards are supported in both markup and code. For an example, see Animate a Property or the Animation Overview.

In the following example, several buttons are used to interactively control an animation clock.

/*
  This example shows how to interactively control 
  a root clock.
*/
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Media.Animation;

namespace Microsoft.Samples.Animation.TimingBehaviors
{
    public class ClockControllerExample : Page
    {
    
        private AnimationClock myControllableClock;
        private Button seekButton;
        private TextBox seekAmountTextBox;
        private ListBox timeSeekOriginListBox;
    
        public ClockControllerExample()
        {
            StackPanel mainPanel = new StackPanel();
            
            // Create a rectangle to animate.
            Rectangle animatedRectangle = new Rectangle();
            animatedRectangle.Width = 100;
            animatedRectangle.Height = 100;
            animatedRectangle.Fill = Brushes.Orange;
            mainPanel.Children.Add(animatedRectangle);
            
            // Create a DoubleAnimation to
            // animate its width.
            DoubleAnimation widthAnimation = 
                new DoubleAnimation(
                    100,
                    500, 
                    new Duration(TimeSpan.FromSeconds(5)));
                    
            // Create a clock from the animation.
            myControllableClock = widthAnimation.CreateClock();
            
            // Apply the clock to the rectangle's Width property.
            animatedRectangle.ApplyAnimationClock(
                Rectangle.WidthProperty, myControllableClock);
            myControllableClock.Controller.Stop();
            
            //
            // Create some buttons to control the clock.
            //
            
            // Create a button to begin the clock.
            Button beginButton = new Button();
            beginButton.Content = "Begin";
            beginButton.Click += 
                new RoutedEventHandler(beginButton_Clicked);
            mainPanel.Children.Add(beginButton);
            
            // Create a button to pause the clock. 
            Button pauseButton = new Button();
            pauseButton.Content = "Pause";
            pauseButton.Click += 
                new RoutedEventHandler(pauseButton_Clicked);
            mainPanel.Children.Add(pauseButton);    
            
            // Create a button to resume the clock. 
            Button resumeButton = new Button();
            resumeButton.Content = "Resume";
            resumeButton.Click += 
                new RoutedEventHandler(resumeButton_Clicked);
            mainPanel.Children.Add(resumeButton); 
            
            // Create a button to advance the clock to
            // its fill period. 
            Button skipToFillButton = new Button();
            skipToFillButton.Content = "Skip to Fill";
            skipToFillButton.Click += 
                new RoutedEventHandler(skipToFillButton_Clicked);
            mainPanel.Children.Add(skipToFillButton);       
            
            // Create a button to stop the clock.
            Button stopButton = new Button();
            stopButton.Content = "Stop";
            stopButton.Click += 
                new RoutedEventHandler(stopButton_Clicked);
            mainPanel.Children.Add(stopButton);  
            
            //
            // Create some controls the enable the user to
            // seek the clock. 
            //
            
            StackPanel seekDetailsPanel = new StackPanel();
            seekDetailsPanel.Margin = new Thickness(0,20,0,20);
            seekDetailsPanel.Orientation = Orientation.Horizontal;
            Label seekAmountLabel = new Label();
            seekAmountLabel.Content = "Seek amount:";
            seekDetailsPanel.Children.Add(seekAmountLabel);
            
            // Create a text box so that the user can
            // specify the amount by which to seek.
            seekAmountTextBox = new TextBox();
            seekAmountTextBox.Text = "0:0:1";
            seekAmountTextBox.VerticalAlignment = VerticalAlignment.Top;
            seekAmountTextBox.TextChanged += 
                new TextChangedEventHandler(seekAmountTextBox_TextChanged);
            seekDetailsPanel.Children.Add(seekAmountTextBox);
            
            Label timeSeekOriginLabel = new Label();
            timeSeekOriginLabel.Content = "Seek Origin:";
            seekDetailsPanel.Children.Add(timeSeekOriginLabel);
            
            // Create a ListBox so the user can
            // select whether the seek time is relative
            // to the clock's BeginTime or Duration.
            timeSeekOriginListBox = new ListBox();
            timeSeekOriginListBox.Items.Add("BeginTime");
            timeSeekOriginListBox.Items.Add("Duration");
            timeSeekOriginListBox.Padding = new Thickness(5);
            timeSeekOriginListBox.SelectedIndex = 0;
            seekDetailsPanel.Children.Add(timeSeekOriginListBox);  
            
            // Create a button to seek the clock.
            seekButton = new Button();
            seekButton.Content = "Seek";
            seekButton.Click += new RoutedEventHandler(seekButton_Clicked);  
            seekDetailsPanel.Children.Add(seekButton);
            mainPanel.Children.Add(seekDetailsPanel);        

            this.Content = mainPanel;
        }
        
        // Starts the clock.
        private void beginButton_Clicked(object sender, RoutedEventArgs e)
        {
            myControllableClock.Controller.Begin();            
        }
        
        // Pauses the clock.
        private void pauseButton_Clicked(object sender, RoutedEventArgs e)
        {
            myControllableClock.Controller.Pause();           
        }

        // Resumes the clock.
        private void resumeButton_Clicked(object sender, RoutedEventArgs e)
        {
            myControllableClock.Controller.Resume();           
        }    

        // Adances the clock to its fill period.
        private void skipToFillButton_Clicked(object sender, RoutedEventArgs e)
        {
            myControllableClock.Controller.SkipToFill();           
        }     
        
        // Stops the clock.
        private void stopButton_Clicked(object sender, RoutedEventArgs e)
        {
            myControllableClock.Controller.Stop();           
        }    
        
        // Seeks the clock.
        private void seekButton_Clicked(object sender, RoutedEventArgs e)
        {
            
           
            try {
                
                // Obtain the seek amount from the seekAmountTextBox TextBox.
                TimeSpan seekAmount = TimeSpan.Parse(seekAmountTextBox.Text);
                
                // Determine the seek origin by reading the selected value
                // from the timeSeekOriginListBox ListBox.
                TimeSeekOrigin selectedOrigin = 
                    (TimeSeekOrigin)Enum.Parse(typeof(TimeSeekOrigin), 
                    (string)timeSeekOriginListBox.SelectedItem);
            
                // Seek to the specified location.
                myControllableClock.Controller.Seek(seekAmount, selectedOrigin); 
                
            }catch(FormatException formatEx)
            {
                MessageBox.Show(seekAmountTextBox.Text 
                    + " is not a valid TimeSpan. Please enter another value.");
                
                // Disable the seek button until the user enters another value.
                seekButton.IsEnabled = false;
            }
        }
        
        // Verifies that seekAmountTextBox has text content.
        // If there is no text, disable the seek button.
        private void seekAmountTextBox_TextChanged(object sender, TextChangedEventArgs e)
        {
            TextBox theTextBox = (TextBox)e.Source;
            if (theTextBox.Text == null || theTextBox.Text.Length < 1)
                seekButton.IsEnabled = false;
            else 
                seekButton.IsEnabled = true;
            
        
        }
 
    }
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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