WPF彩色动画似乎保留了部分原始颜色？

我对彩色动画有一个奇怪的问题

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

我有一个绑定到列表框的项目列表。这些项有一个枚举属性，该属性可以有三个值之一-NoRemarks、RemarksFound和RemarksUpdated

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

在这个列表框的datatemplate上，我有一个矩形，它显示与项目状态相关的颜色-红色、橙色或绿色。模板中有一个数据触发器来设置长方体的动画，但每当动画启动时，它似乎都会保留一些旧的颜色。如果我从红色变为绿色，我会得到一种橘黄色的深绿色。如果我从橙色动画到绿色动画，我会得到类似的颜色，尽管我可以看到颜色与从红色动画到绿色动画时略有不同

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

这是XAML-我只包括了必要的部分：

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

矩形：

<Rectangle x:Name="HeaderRemarkStatusRectangle" Grid.Column="1" Grid.Row="0" Grid.RowSpan="3" HorizontalAlignment="Left"
        RadiusX="1" RadiusY="1" Width="10" Margin="3" StrokeThickness="1" >
    <Rectangle.Stroke>
      <SolidColorBrush Color="#FFDC5A5A" x:Name="RectangleStroke" />
    </Rectangle.Stroke>
    <Rectangle.Fill>
      <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
        <GradientStop Color="#ff7a7a" Offset="0.5" x:Name="GradientStop1" />
        <GradientStop Color="#ff5653" Offset="0.5" x:Name="GradientStop2" />
      </LinearGradientBrush>
    </Rectangle.Fill>
  </Rectangle>

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

触发因素：

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

我尝试了几种方法来解决这个问题

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

我已经尝试为每个触发器设置Datatrigger.exitactions以将颜色恢复为白色（有点假，但我想看看缺少的“From”部分是否是问题所在）。当动画触发时，我得到了一个半透明的盒子，尽管它的颜色是正确的

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

我也尝试过设置“from”属性——同样，这并不实际，因为我不知道触发器的原始颜色是什么，但我想看看效果。我得到了与上面类似的结果

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

还尝试更改FillBehavior属性，但将其设置为“停止”意味着动画完成后颜色将立即恢复为原始颜色（如预期的那样）

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

我认为动画将从当前颜色（从datatemplate或当前动画（如果存在）中）进行动画制作，并将动画制作为新颜色。我不太明白为什么我似乎在原色和新色之间找到了一种颜色。这是彩色动画的已知问题还是触发器的问题

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

---

谢谢大家

您需要设置ColorAnimation对象的持续时间。动画的默认值为1秒，因此0.5秒的情节提要仅运行动画的一半

  <DataTrigger Binding="{Binding Path=ItemStatus}" Value="RemarksUpdated">
    <DataTrigger.EnterActions>
      <BeginStoryboard>
        <BeginStoryboard.Storyboard>
          <Storyboard Duration="0:0:0.5" >
            <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" />
            <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" />
            <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" />
          </Storyboard>
        </BeginStoryboard.Storyboard>
      </BeginStoryboard>
    </DataTrigger.EnterActions>
  </DataTrigger>
</DataTemplate.Triggers>

<Storyboard>
    <ColorAnimation Storyboard.TargetName="GradientStop1" Storyboard.TargetProperty="Color" To="#83ec71" Duration="0:0:0.5"/>
    <ColorAnimation Storyboard.TargetName="GradientStop2" Storyboard.TargetProperty="Color" To="#5dda4e" Duration="0:0:0.5"/>
    <ColorAnimation Storyboard.TargetName="RectangleStroke" Storyboard.TargetProperty="Color" To="#FF50AA46" Duration="0:0:0.5"/>
</Storyboard>

太好了，谢谢。好几天来我一直在努力解决这个问题。我假设动画只使用故事板中的持续时间。再次感谢这件事困扰了我这么久。我不敢相信彩色动画没有从故事板继承它的持续时间。为什么？