[英]WPF: IsMouseOver trigger on ListViewItem
我有以下代码:
<Style>
<Style TargetType="{x:Type ListViewItem}" x:Key="MyStyle">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="Red" />
</Trigger>
</Style.Triggers>
</Style>
当我使用这种样式在ListView上设置ItemContainerStyle属性时,它不起作用-背景不变。
我看到了几个类似的问题,人们回答说在ListView的情况下它不起作用,但是没有人给出如何创建此触发器的简单响应。
你有什么主意吗?
为此,您需要更改listviewitem的模板。 这是一个基于win10模板的工作标记:
<ListView>
<ListView.Resources>
<Style TargetType="ListViewItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListViewItem}">
<Border x:Name="Bd"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="Transparent"
Padding="{TemplateBinding Padding}" SnapsToDevicePixels="True">
<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}"
Content="{TemplateBinding Content}"
ContentStringFormat="{TemplateBinding ContentStringFormat}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="True"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="Red"/>
<Setter Property="BorderBrush" TargetName="Bd" Value="#A826A0DA"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Selector.IsSelectionActive" Value="False"/>
<Condition Property="IsSelected" Value="True"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="Orange"/>
<Setter Property="BorderBrush" TargetName="Bd" Value="#FFDADADA"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Selector.IsSelectionActive" Value="True"/>
<Condition Property="IsSelected" Value="True"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="Yellow"/>
<Setter Property="BorderBrush" TargetName="Bd" Value="#FF26A0DA"/>
</MultiTrigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListView.Resources>
<ListViewItem >AAAAAAAAAAAA</ListViewItem>
<ListViewItem>BBBBBBBBBBBB</ListViewItem>
<ListViewItem>CCCCCCCCCCCC</ListViewItem>
</ListView>
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