可见性情节提要仅部分起作用

Question

请看这个Storyboard:

<Storyboard x:Key="visibilityStoryboardn">
            <ObjectAnimationUsingKeyFrames BeginTime="0:0:0" Storyboard.TargetProperty="Visibility">
                <DiscreteObjectKeyFrame KeyTime="0">
                    <DiscreteObjectKeyFrame.Value>
                        <Visibility>Visible</Visibility>
                    </DiscreteObjectKeyFrame.Value>
                </DiscreteObjectKeyFrame>
            </ObjectAnimationUsingKeyFrames>
            <DoubleAnimation BeginTime="0:0:0.0" Storyboard.TargetProperty="Opacity" From="0" To="1" Duration="0:0:2.0"/>
            <DoubleAnimation BeginTime="0:0:10.0" Storyboard.TargetProperty="Opacity" From="1" To="0" Duration="0:0:2.0"/>
            <ObjectAnimationUsingKeyFrames BeginTime="0:0:2" Storyboard.TargetProperty="Visibility">
                <DiscreteObjectKeyFrame KeyTime="0">
                    <DiscreteObjectKeyFrame.Value>
                        <Visibility>Collapsed</Visibility>
                    </DiscreteObjectKeyFrame.Value>
                </DiscreteObjectKeyFrame>
            </ObjectAnimationUsingKeyFrames>
        </Storyboard>

我尝试将我的元素 Visibility 从 Collapsed 更改为 Visible，持续时间为 2 秒，然后等待 10 秒并将 Visibility 更改回 Collapsed.

目前这只做第一件事，我的意思是这将我的元素更改为 Visible，持续时间为 2 秒，但随后立即开始将其隐藏回 Collapsed，但现在没有动画样式.

Answer 1

我认为您唯一的问题是您为 Collapsed 关键帧定义了 BeginTime="0:0:2"。应该是BeginTime="0:0:12"

<ObjectAnimationUsingKeyFrames BeginTime="0:0:0" Storyboard.TargetProperty="Visibility">
    <DiscreteObjectKeyFrame KeyTime="0:0:0">
        <DiscreteObjectKeyFrame.Value>
            <Visibility>Visible</Visibility>
        </DiscreteObjectKeyFrame.Value>
    </DiscreteObjectKeyFrame>
    <DiscreteObjectKeyFrame KeyTime="0:0:12.0">
        <DiscreteObjectKeyFrame.Value>
            <Visibility>Collapsed</Visibility>
        </DiscreteObjectKeyFrame.Value>
    </DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation BeginTime="0:0:0.0" Storyboard.TargetProperty="Opacity" From="0" To="1" Duration="0:0:2.0"/>
<DoubleAnimation BeginTime="0:0:10.0" Storyboard.TargetProperty="Opacity" From="1" To="0" Duration="0:0:2.0"/>

可见性情节提要仅部分起作用

Visibility Storyboard works only partial

wpf

animation

visibility