wpf Visibility 动画

XAML实现:

<Border Height="100" Width="80" CornerRadius="11,11,11,11" Margin="5" BorderThickness="2" Background="Brown" IsEnabled="False" Name="Bord11">
    <Border.Triggers>
        <EventTrigger RoutedEvent="Border.Loaded" >
            <EventTrigger.Actions>
                <BeginStoryboard>
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames  Storyboard.TargetProperty="Visibility" Duration="0:0:4">
                            <ObjectAnimationUsingKeyFrames.KeyFrames>
                                <DiscreteObjectKeyFrame KeyTime="0:0:1" >
                                    <DiscreteObjectKeyFrame.Value>
                                        <Visibility>Visible</Visibility>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                                <DiscreteObjectKeyFrame KeyTime="0:0:2" >
                                    <DiscreteObjectKeyFrame.Value>
                                        <Visibility>Hidden</Visibility>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                                <DiscreteObjectKeyFrame KeyTime="0:0:3" >
                                    <DiscreteObjectKeyFrame.Value>
                                        <Visibility>Collapsed</Visibility>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>

                            </ObjectAnimationUsingKeyFrames.KeyFrames>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger.Actions>
        </EventTrigger>
    </Border.Triggers>
    <Label Height="39" Name="label1" Width="62">ABCDEFGH</Label>
</Border>

  

后台实现：

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