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我有一系列触发器来控制应该上下移动的栏。每次给它一个随机选择的值时，它都会滑到适当的位置：

<Trigger Property="Content" Value="B000">
    <Trigger.EnterActions>
        <BeginStoryboard Name="B000" HandoffBehavior="SnapshotAndReplace">
            <Storyboard FillBehavior="HoldEnd" Duration="0:0:1">
                <DoubleAnimation Storyboard.TargetName="bar1" Storyboard.TargetProperty="Offset" To="0" Duration="0:0:1" BeginTime="0:0:0" />
                <DoubleAnimation Storyboard.TargetName="bar2" Storyboard.TargetProperty="Offset" To="0" Duration="0:0:1" BeginTime="0:0:0" />
            </Storyboard>
        </BeginStoryboard>
    </Trigger.EnterActions>
</Trigger>
<Trigger Property="Content" Value="B125">
    <Trigger.EnterActions>
        <BeginStoryboard Name="B125" HandoffBehavior="SnapshotAndReplace">
            <Storyboard FillBehavior="HoldEnd" Duration="0:0:1">
                <DoubleAnimation Storyboard.TargetName="bar1" Storyboard.TargetProperty="Offset" To=".125" Duration="0:0:1" BeginTime="0:0:0" />
                <DoubleAnimation Storyboard.TargetName="bar2" Storyboard.TargetProperty="Offset" To=".125" Duration="0:0:1" BeginTime="0:0:0" />
            </Storyboard>
        </BeginStoryboard>
    </Trigger.EnterActions>
</Trigger>
<Trigger Property="Content" Value="B250">
    <Trigger.EnterActions>
        <BeginStoryboard Name="B250" HandoffBehavior="SnapshotAndReplace">
            <Storyboard FillBehavior="HoldEnd" Duration="0:0:1">
                <DoubleAnimation Storyboard.TargetName="bar1" Storyboard.TargetProperty="Offset" To=".25" Duration="0:0:1" BeginTime="0:0:0" />
                <DoubleAnimation Storyboard.TargetName="bar2" Storyboard.TargetProperty="Offset" To=".25" Duration="0:0:1" BeginTime="0:0:0" />
            </Storyboard>
        </BeginStoryboard>
    </Trigger.EnterActions>
</Trigger>
<Trigger Property="Content" Value="B500">
    <Trigger.EnterActions>
        <BeginStoryboard Name="B500" HandoffBehavior="SnapshotAndReplace">
            <Storyboard FillBehavior="HoldEnd" Duration="0:0:1">
                <DoubleAnimation Storyboard.TargetName="bar1" Storyboard.TargetProperty="Offset" To=".5" Duration="0:0:1" BeginTime="0:0:0" />
                <DoubleAnimation Storyboard.TargetName="bar2" Storyboard.TargetProperty="Offset" To=".5" Duration="0:0:1" BeginTime="0:0:0" />
            </Storyboard>
        </BeginStoryboard>
    </Trigger.EnterActions>
</Trigger>
<Trigger Property="Content" Value="B750">
    <Trigger.EnterActions>
        <BeginStoryboard Name="B750" HandoffBehavior="SnapshotAndReplace">
            <Storyboard FillBehavior="HoldEnd" Duration="0:0:1">
                <DoubleAnimation Storyboard.TargetName="bar1" Storyboard.TargetProperty="Offset" To=".75" Duration="0:0:1" BeginTime="0:0:0" />
                <DoubleAnimation Storyboard.TargetName="bar2" Storyboard.TargetProperty="Offset" To=".75" Duration="0:0:1" BeginTime="0:0:0" />
            </Storyboard>
        </BeginStoryboard>
    </Trigger.EnterActions>
</Trigger>
<Trigger Property="Content" Value="B1k0">
    <Trigger.EnterActions>
        <BeginStoryboard Name="B1k0" HandoffBehavior="SnapshotAndReplace">
            <Storyboard FillBehavior="HoldEnd" Duration="0:0:1">
                <DoubleAnimation Storyboard.TargetName="bar1" Storyboard.TargetProperty="Offset" To="1" Duration="0:0:1" BeginTime="0:0:0" />
                <DoubleAnimation Storyboard.TargetName="bar2" Storyboard.TargetProperty="Offset" To="1" Duration="0:0:1" BeginTime="0:0:0" />
            </Storyboard>
        </BeginStoryboard>
    </Trigger.EnterActions>
</Trigger>

但由于某种原因，它只会向上移动。它应该再次向下移动的部分，它就坐在那里。在更改之间停止动画只会导致它从底部重新开始，这不是我想要的。

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1 回答 1

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我不确定你说的下去是什么意思，但每个动画/触发器都有 EnterAction 和 ExitAction。

对我来说，听起来你正在寻找 ExitAction ，它可以让你把那个东西移回它的起始位置。:)

看看这个链接：

http://msdn.microsoft.com/en-us/library/system.windows.triggerbase.exitactions%28v=vs.110%29.aspx

这是一个例子：

<Style x:Key="PropertyTriggerExampleButtonStyle" TargetType="{x:Type Button}">

  <Setter Property="Opacity" Value="0.25" />

  <Style.Triggers>
    <Trigger Property="IsMouseOver" Value="True">

      <Trigger.EnterActions>
        <BeginStoryboard>
          <Storyboard>
            <DoubleAnimation Storyboard.TargetProperty="Opacity"
              To="1" Duration="0:0:1" />
          </Storyboard>
        </BeginStoryboard>
      </Trigger.EnterActions>
      <Trigger.ExitActions>
        <BeginStoryboard>
          <Storyboard>
            <DoubleAnimation Storyboard.TargetProperty="Opacity"
              To="0.25" Duration="0:0:1" />
          </Storyboard>
        </BeginStoryboard>
      </Trigger.ExitActions>          
    </Trigger>               
  </Style.Triggers>    
</Style>

编辑：

然后你需要有多个这样的 DoubleAnimations：

        <BeginStoryboard>
          <Storyboard>
            <DoubleAnimation .... />
            <DoubleAnimation ... />
            <DoubleAnimation ... />
            <DoubleAnimation ... />
          </Storyboard>
        </BeginStoryboard>
于 2013-12-03T15:30:07.647 回答