c# – Storyboard DoubleAnimation不适用于StackPanel高度属性

概述我正在尝试使用DoubleAnimation来更改StackPanel的Height属性.代码不会抛出任何异常.但动画不起作用. <StackPanel x:Name="FlyoutContent"> <StackPanel.Resources> <Storyboard x:Name="HideStackPanel"> @H_301_4@ 我正在尝试使用DoubleAnimation来更改StackPanel的Height属性.代码不会抛出任何异常.但动画不起作用.

<StackPanel x:name="FlyoutContent">                <StackPanel.Resources>                    <Storyboard x:name="HIDeStackPanel">                        <DoubleAnimation Storyboard.Targetname="ChangePasswordPanel" Storyboard.TargetProperty="Height" From="190" To="0" Duration="0:0:1">                            <DoubleAnimation.EasingFunction>                                <PowerEase EasingMode="EaseIn"></PowerEase>                            </DoubleAnimation.EasingFunction>                        </DoubleAnimation>                    </Storyboard>                    <Storyboard x:name="ShowStackPanel">                        <DoubleAnimation Storyboard.Targetname="ChangePasswordPanel" Storyboard.TargetProperty="Height" From="0" To="190" Duration="0:0:1">                            <DoubleAnimation.EasingFunction>                                <PowerEase EasingMode="EaseIn"></PowerEase>                            </DoubleAnimation.EasingFunction>                        </DoubleAnimation>                    </Storyboard>                </StackPanel.Resources>                <TextBlock margin="0,20,0" FontWeight="Bold" Text="Change Current Password" textwrapPing="Wrap" Style="{StaticResource BasicTextStyle}" HorizontalAlignment="left" IsTapEnabled="True" Tapped="ChangePasswordheader_Tapped"/>                <StackPanel x:name="ChangePasswordPanel" margin="0,5,0" Height="0">

C#事件处理程序

private voID ChangePasswordheader_Tapped(object sender,TappedRoutedEventArgs e){    if (ChangePasswordPanel.Height == 0)    {        ShowStackPanel.Begin();    }    else    {        HIDeStackPanel.Begin();    }}

它确实命中了ChangePasswordheader_Tapped事件处理程序并按预期执行ShowStackPanel.Begin或HIDeStackPanel.Begin语句.但它对输出没有任何影响. StackPanel的高度保持为0.

什么发生了什么？

@H_301_4@解决方法 我自己想通了.我所要做的就是在DoubleAnimation上启用相关动画(EnableDependentAnimation),因为此动画会影响布局.然后它完美地工作.

<Storyboard x:name="HIDeChangePasswordPanel">                            <DoubleAnimation EnableDependentAnimation="True" Storyboard.Targetname="ChangePasswordPanel" Storyboard.TargetProperty="Height" From="190" To="0" Duration="0:0:0.2">                                <DoubleAnimation.EasingFunction>                                    <PowerEase EasingMode="EaseIn"></PowerEase>                                </DoubleAnimation.EasingFunction>                            </DoubleAnimation>                        </Storyboard>                        <Storyboard x:name="ShowChangePasswordPanel">                            <DoubleAnimation EnableDependentAnimation="True" Storyboard.Targetname="ChangePasswordPanel" Storyboard.TargetProperty="Height" From="0" To="190" Duration="0:0:0.2">                                <DoubleAnimation.EasingFunction>                                    <PowerEase EasingMode="EaseIn"></PowerEase>                                </DoubleAnimation.EasingFunction>                            </DoubleAnimation>                        </Storyboard>

希望能节省一些时间！

@H_301_4@ @H_301_4@ @H_301_4@ @H_301_4@ 总结

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