ListViewItem MultiDataTrigger和AlternationIndex
ListViewItem MultiDataTrigger和AlternationIndex
提问于 2022-04-12 08:22:35
因此，我尝试将不同的Background颜色应用于每个ListViewItem。
<Style.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsMouseOver}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsSelected}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=AlternationIndex}" Value="0"/>
</MultiDataTrigger.Conditions>
<Setter Property="Background" Value="Blue"/>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsMouseOver}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsSelected}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=AlternationIndex}" Value="1"/>
</MultiDataTrigger.Conditions>
<Setter Property="Background" Value="Red"/>
</MultiDataTrigger>
</Style.Triggers>但这似乎丝毫没有影响我的ListViewItem，而且看起来都是一样的。
更新
<Style x:Key="ListViewItemStyle" TargetType="{x:Type ListViewItem}">
<Setter Property="SnapsToDevicePixels" Value="True"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="FocusVisualStyle" Value="{x:Null}"/>
<Setter Property="FontSize" Value="12"/>
<Setter Property="Height" Value="40"/>
<Setter Property="Cursor" Value="Hand"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListViewItem}">
<Border BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}"
CornerRadius="2"
SnapsToDevicePixels="true">
<Border x:Name="InnerBorder"
BorderThickness="0"
CornerRadius="1">
<Grid>
<Grid.RowDefinitions>
<RowDefinition MaxHeight="11"/>
<RowDefinition/>
</Grid.RowDefinitions>
<GridViewRowPresenter Grid.RowSpan="2"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
</Border>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=(ItemsControl.AlternationIndex)}" Value="0"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsMouseOver}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsSelected}" Value="False"/>
</MultiDataTrigger.Conditions>
<Setter Property="Background" Value="Blue"/>>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=(ItemsControl.AlternationIndex)}" Value="1"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsMouseOver}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsSelected}" Value="False"/>
</MultiDataTrigger.Conditions>
<Setter Property="Background" Value="Red"/>
</MultiDataTrigger>
</Style.Triggers>
</Style>回答 1
Stack Overflow用户
回答已采纳
发布于 2022-04-12 08:34:36
如果只在条件中使用ListBoxItem的属性(或附加属性)，则可以通过使用MultiTrigger而不是MultDataTrigger来简化样式。
<Style.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="False"/>
<Condition Property="IsSelected" Value="False"/>
<Condition Property="ItemsControl.AlternationIndex" Value="0"/>
</MultiTrigger.Conditions>
<Setter Property="Background" Value="Blue"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="False"/>
<Condition Property="IsSelected" Value="False"/>
<Condition Property="ItemsControl.AlternationIndex" Value="1"/>
</MultiTrigger.Conditions>
<Setter Property="Background" Value="Red"/>
</MultiTrigger>
</Style.Triggers>否则，对AlternationIndex使用附加属性绑定语法(它是ItemsControl的附加属性)，将其完全限定为：(ItemsControl.AlternationIndex)。
<Style.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsMouseOver}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsSelected}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=(ItemsControl.AlternationIndex)}" Value="0"/>
</MultiDataTrigger.Conditions>
<Setter Property="Background" Value="Blue"/>
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsMouseOver}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsSelected}" Value="False"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Self}, Path=(ItemsControl.AlternationIndex)}" Value="1"/>
</MultiDataTrigger.Conditions>
<Setter Property="Background" Value="Red"/>
</MultiDataTrigger>
</Style.Triggers>关于附加属性的绑定语法的文档：
若要绑定到附加属性，请在附加属性周围放置括号。例如，要绑定到附加属性
DockPanel.Dock，语法是Path=(DockPanel.Dock)。
对您的注释和更新进行更新:您必须将AlternationCount属性显式地设置为ListView上的交替次数(在您的情况下为2)，否则将使用默认值，即为零。如果变更计数为零，则所有项目的交替索引也将为零，请参阅文档中的备注。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/71839314
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