ListViewItemMultiDataTrigger和AlternationIndex

所以我嘗試對Background每個應用不同的顏色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>

但似乎這根本不影響我ListViewItem的s，看起來都一樣。

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>

uj5u.com熱心網友回復：

如果您僅ListBoxItem在條件中使用屬性（或附加屬性），則可以使用 aMultiTrigger而不是 a來簡化樣式MultDataTrigger。

<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>

否則，使用帶括號的附加屬性系結語法 for AlternationIndex，它是 的附加屬性ItemsControl，完全限定它：(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>

從有關附加屬性的系結語法的檔案中：

要系結到附加屬性，請在附加屬性周圍放置括號。例如，要系結到附加屬性DockPanel.Dock，語法是Path=(DockPanel.Dock).

更新您的評論和更新：您必須明確地將您的AlternationCount屬性設定ListView為交替次數 - 在您的情況下為兩次 - 否則將使用默認值，即零。如果交替計數為零，則所有專案的交替索引也將為零，請參閱檔案中的備注。

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