Question

我试图为我的TabItem的背景/渐变设置动画。但是，我收到了一个错误：

其他信息：无法解析中的所有属性引用属性路径'Background.GradientStops [2] .Color'。验证适用的对象支持属性。

将鼠标悬停在标签项上时会发生错误。

这是XAML：

<Style TargetType="{x:Type TabItem}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type TabItem}">
                <Grid>
                    <Border Name="Border" BorderBrush="#666" BorderThickness="1,1,1,0" CornerRadius="8,8,0,0" Margin="-2,0,3,-1">
                        <!-- Some irrelevant code here -->
                    </Border>

                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="CommonStates">
                            <VisualState x:Name="Normal"/>
                            <VisualState x:Name="MouseOver">
                                <Storyboard>
                                    <ColorAnimation Duration="0:0:0.3" To="#EBEBEB" Storyboard.TargetProperty="Background.GradientStops[1].Color" Storyboard.TargetName="Border"/>
                                    <ColorAnimation Duration="0:0:0.3" To="#CDCDCD" Storyboard.TargetProperty="Background.GradientStops[2].Color" Storyboard.TargetName="Border"/>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                </Grid>

                <ControlTemplate.Triggers>
                    <Trigger Property="IsSelected" Value="True">
                        <Setter TargetName="Border" Property="Background">
                            <Setter.Value>
                                <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
                                    <GradientStop Color="#fff" Offset="0.35"></GradientStop>
                                    <GradientStop Color="#e9e9e9" Offset="0.75"></GradientStop>
                                </LinearGradientBrush>
                            </Setter.Value>
                        </Setter>
                    </Trigger>

                    <Trigger Property="IsSelected" Value="False">
                        <Setter TargetName="Border" Property="Background">
                            <Setter.Value>
                                <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
                                    <GradientStop Offset="0.35">
                                        <GradientStop.Color>
                                            <Color A="127" R="255" G="255" B="255" />
                                        </GradientStop.Color>
                                    </GradientStop>

                                    <GradientStop Offset="0.75">
                                        <GradientStop.Color>
                                            <Color A="127" R="233" G="233" B="233" />
                                        </GradientStop.Color>
                                    </GradientStop>
                                </LinearGradientBrush>
                            </Setter.Value>
                        </Setter>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

我认为Storyboard.TargetProperty是错误的。它应该是什么？

Answer 1

那可能不是零基指数吗？

<Storyboard> 
    <ColorAnimation Storyboard.TargetProperty="Background.GradientStops[0].Color" .../> 
    <ColorAnimation Storyboard.TargetProperty="Background.GradientStops[1].Color" .../> 
</Storyboard>

我的WPF TabItem动画有什么问题？

1 个答案: