wpf Visibility 动画

XAML实现:

[xhtml] view plaincopy

1. <Border Height="100" Width="80" CornerRadius="11,11,11,11" Margin="5" BorderThickness="2" Background="Brown" IsEnabled="False" Name="Bord11">
2. <Border.Triggers>
3. <EventTrigger RoutedEvent="Border.Loaded" >
4. <EventTrigger.Actions>
5. <BeginStoryboard>
6. <Storyboard>
7. <ObjectAnimationUsingKeyFrames  Storyboard.TargetProperty="Visibility" Duration="0:0:4">
8. <ObjectAnimationUsingKeyFrames.KeyFrames>
9. <DiscreteObjectKeyFrame KeyTime="0:0:1" >
10. <DiscreteObjectKeyFrame.Value>
11. <Visibility>Visible</Visibility>
12. </DiscreteObjectKeyFrame.Value>
13. </DiscreteObjectKeyFrame>
14. <DiscreteObjectKeyFrame KeyTime="0:0:2" >
15. <DiscreteObjectKeyFrame.Value>
16. <Visibility>Hidden</Visibility>
17. </DiscreteObjectKeyFrame.Value>
18. </DiscreteObjectKeyFrame>
19. <DiscreteObjectKeyFrame KeyTime="0:0:3" >
20. <DiscreteObjectKeyFrame.Value>
21. <Visibility>Collapsed</Visibility>
22. </DiscreteObjectKeyFrame.Value>
23. </DiscreteObjectKeyFrame>
24. </ObjectAnimationUsingKeyFrames.KeyFrames>
25. </ObjectAnimationUsingKeyFrames>
26. </Storyboard>
27. </BeginStoryboard>
28. </EventTrigger.Actions>
29. </EventTrigger>
30. </Border.Triggers>
31. <Label Height="39" Name="label1" Width="62">ABCDEFGH</Label>
32. </Border>

后台实现：

[c-sharp] view plaincopy

1. ObjectAnimationUsingKeyFrames animate = new ObjectAnimationUsingKeyFrames();
2. animate.Duration = new TimeSpan(0,0,4);
3. animate.RepeatBehavior = RepeatBehavior.Forever;
4. DiscreteObjectKeyFrame kf1 = new DiscreteObjectKeyFrame(Visibility.Visible, new TimeSpan(0, 0, 1));
5. DiscreteObjectKeyFrame kf2 = new DiscreteObjectKeyFrame(Visibility.Hidden, new TimeSpan(0, 0, 2));
6. DiscreteObjectKeyFrame kf3 = new DiscreteObjectKeyFrame(Visibility.Collapsed, new TimeSpan(0, 0,3));
7. animate.KeyFrames.Add(kf1);
8. animate.KeyFrames.Add(kf2);
9. animate.KeyFrames.Add(kf3);
10. Bord11.BeginAnimation(Border.VisibilityProperty, animate);