WPF。列表框项目样式
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时间：2020-09-13 13:16:38 来源:igfitidea点击:
WPF. ListBox item style
提问by LTU
I have problem with ListBox item style, I create two styles and do not know to use it together. 1st style is for ListBox item size, mouse over color and so on, or second is for item background (Alternation count). If I leave one of them they work fine, but how to make them work together? Or maybe I could it write in one style?
我的 ListBox 项样式有问题，我创建了两种样式，但不知道如何一起使用。第一种样式用于 ListBox 项目大小、鼠标悬停颜色等，第二种样式用于项目背景（交替计数）。如果我离开其中一个，它们可以正常工作，但是如何让它们一起工作？或者也许我可以用一种风格来写？
My code is:
我的代码是：
..... <Style x:Key="Style2"
TargetType="{x:Type ListBoxItem}">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border
Name="Border"
Padding="7"
SnapsToDevicePixels="True">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="Border" Property="Background"
Value="{StaticResource SelectedBackgroundBrush}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground"
Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="ItemsControl.AlternationIndex" Value="0">
<Setter Property="Background" Value="#FFFFFF"></Setter>
</Trigger>
<Trigger Property="ItemsControl.AlternationIndex" Value="1">
<Setter Property="Background" Value="#F7F7F7"></Setter>
</Trigger>
</Style.Triggers>
</Style>
<Style x:Key="{x:Type ListBoxItem}"
TargetType="{x:Type ListBoxItem}"
BasedOn="{StaticResource Style2}">
<Style.Triggers>
<Trigger Property="ItemsControl.AlternationIndex" Value="0">
<Setter Property="Background" Value="#19f39611"></Setter>
</Trigger>
<Trigger Property="ItemsControl.AlternationIndex" Value="1">
<Setter Property="Background" Value="#19000000"></Setter>
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid >
<ScrollViewer Margin="30,98,362,30">
<ListBox x:Name="lbPersonList" AlternationCount="2">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</ScrollViewer>
</Grid>
回答by Nacho
You can use BasedOn
您可以使用支持算法FMP
<Style x:Key="Style1" TargetType="ListBoxItem">
...
</Style>
<Style x:Key="{x:Type ListBoxItem}" TargetType="ListBoxItem" BasedOn={StaticResource Style1}>
...
</Style>
EDITED
已编辑
The problem was the Background setter of the ControlTemplate. This is the solution (using AlternationConverter instead of triggers):
问题是 ControlTemplate 的背景设置器。这是解决方案（使用 AlternationConverter 而不是触发器）：
<Window.Resources>
<AlternationConverter x:Key="BackgroundConverter">
<SolidColorBrush Color="#19f39611" />
<SolidColorBrush Color="#19000000" />
</AlternationConverter>
<Style x:Key="Style2" TargetType="{x:Type ListBoxItem}">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Name="Border" Padding="7" SnapsToDevicePixels="True" Background="{TemplateBinding Background}">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="Border" Property="Background" Value="Gray"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="Green"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="Style1" TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource Style2}">
<Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self},
Path=(ItemsControl.AlternationIndex),
Converter={StaticResource BackgroundConverter}}"/>
</Style>
</Window.Resources>
<ListBox x:Name="lbPersonList" AlternationCount="2" ItemContainerStyle="{StaticResource Style1}">
...
回答by Heena Patil
Using Dynamic resourceyou can achieve this using single listboxitem style
使用动态资源，您可以使用单个 listboxitem 样式实现此目的
<Window.Resources>
<Style x:Key="Lststyle" TargetType="ListBoxItem">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Name="Border" Background="Transparent" Padding="7" SnapsToDevicePixels="True">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ListBox.AlternationIndex" Value="0">
<Setter TargetName="Border" Property="Background" Value="{DynamicResource Color0}"/>
</Trigger>
<Trigger Property="ListBox.AlternationIndex" Value="1">
<Setter TargetName="Border" Property="Background" Value="{DynamicResource Color1}"/>
</Trigger>
<Trigger Property="ListBoxItem.IsSelected" Value="true">
<Setter TargetName="Border" Property="Background" Value="Green"/>
</Trigger>
<Trigger Property="ListBoxItem.IsEnabled" Value="false">
<Setter Property="Foreground" Value="LightGray"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<StackPanel >
<TextBlock Text="Listbox1"></TextBlock>
<ScrollViewer >
<ListBox x:Name="lbPersonList" ItemContainerStyle="{StaticResource Lststyle}" AlternationCount="2">
<ListBox.Resources>
<SolidColorBrush x:Key="Color0" Color="#19f39611"></SolidColorBrush>
<SolidColorBrush x:Key="Color1" Color="#19000000"></SolidColorBrush>
</ListBox.Resources>
<TextBlock Text="listboxitem1"></TextBlock>
<TextBlock Text="listboxitem1"></TextBlock>
<TextBlock Text="listboxitem1"></TextBlock>
</ListBox>
</ScrollViewer>
<TextBlock Margin="0,10,0,0" Text="Listbox2"></TextBlock>
<ScrollViewer>
<ListBox x:Name="lbPersonList1" ItemContainerStyle="{StaticResource Lststyle}" AlternationCount="2">
<ListBox.Resources>
<SolidColorBrush x:Key="Color0" Color="Yellow"></SolidColorBrush>
<SolidColorBrush x:Key="Color1" Color="Blue"></SolidColorBrush>
</ListBox.Resources>
<TextBlock Text="listboxitem1"></TextBlock>
<TextBlock Text="listboxitem1"></TextBlock>
<TextBlock Text="listboxitem1"></TextBlock>
</ListBox>
</ScrollViewer>
</StackPanel>
Simplified xaml
简化的xaml
<Window.Resources>
<Style x:Key="lst1" TargetType="ListBox" >
<Style.Resources>
<SolidColorBrush x:Key="Color0" Color="#19f39611"></SolidColorBrush>
<SolidColorBrush x:Key="Color1" Color="#19000000"></SolidColorBrush>
</Style.Resources>
</Style>
<Style x:Key="lst2" TargetType="ListBox" >
<Style.Resources>
<SolidColorBrush x:Key="Color0" Color="Blue"></SolidColorBrush>
<SolidColorBrush x:Key="Color1" Color="Yellow"></SolidColorBrush>
</Style.Resources>
</Style>
<Style x:Key="Lststyle" TargetType="ListBoxItem">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Name="Border" Background="Transparent" Padding="7" SnapsToDevicePixels="True">
<Border.Style>
<Style TargetType="Border">
<Style.Triggers>
<Trigger Property="ItemsControl.AlternationIndex" Value="0">
<Setter Property="Background" Value="{DynamicResource Color0}"/>
</Trigger>
<Trigger Property="ItemsControl.AlternationIndex" Value="1">
<Setter Property="Background" Value="{DynamicResource Color1}"/>
</Trigger>
</Style.Triggers>
</Style>
</Border.Style>
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="ListBox.AlternationIndex" Value="0">
<Setter TargetName="Border" Property="Background" Value="{DynamicResource Color0}"/>
</Trigger>
<Trigger Property="ListBox.AlternationIndex" Value="1">
<Setter TargetName="Border" Property="Background" Value="{DynamicResource Color1}"/>
</Trigger>
<Trigger Property="ListBoxItem.IsSelected" Value="true">
<Setter TargetName="Border" Property="Background" Value="Green"/>
</Trigger>
<Trigger Property="ListBoxItem.IsEnabled" Value="false">
<Setter Property="Foreground" Value="LightGray"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<StackPanel >
<TextBlock Text="Listbox1"></TextBlock>
<ScrollViewer >
<ListBox x:Name="lbPersonList" Style="{StaticResource lst1}" ItemContainerStyle="{StaticResource Lststyle}" AlternationCount="2">![enter image description here][2]
<TextBlock Text="listboxitem1"></TextBlock>
<TextBlock Text="listboxitem1"></TextBlock>
<TextBlock Text="listboxitem1"></TextBlock>
</ListBox>
</ScrollViewer>
<TextBlock Margin="0,10,0,0" Text="Listbox2"></TextBlock>
<ScrollViewer>
<ListBox x:Name="lbPersonList1" Style="{StaticResource lst2}" ItemContainerStyle="{StaticResource Lststyle}" AlternationCount="2">
<TextBlock Text="listboxitem1"></TextBlock>
<TextBlock Text="listboxitem1"></TextBlock>
<TextBlock Text="listboxitem1"></TextBlock>
</ListBox>
</ScrollViewer>
</StackPanel>
回答by Shmwel
You should set for each style a proper x:Keyand then for one of your style you can use BasedOn={StaticResource Style1}which appends to your current style, style1. (Check documentation: https://msdn.microsoft.com/en-us/library/system.windows.style.basedon(v=vs.110).aspx)
您应该为每种样式设置一个适当的x:Key，然后为您可以使用的样式之一设置BasedOn={StaticResource Style1}附加到您当前的样式 style1。（检查文档：https: //msdn.microsoft.com/en-us/library/system.windows.style.basedon( v=vs.110) .aspx）
Check this one:
检查这个：
<Style x:Key="Style2"
TargetType="ListBoxItem">
<Style.Triggers>
<Trigger Property="ItemsControl.AlternationIndex"
Value="0">
<Setter Property="Background"
Value="#19f39611"></Setter>
</Trigger>
<Trigger Property="ItemsControl.AlternationIndex"
Value="1">
<Setter Property="Background"
Value="#19000000"></Setter>
</Trigger>
</Style.Triggers>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Name="Border"
Padding="7"
SnapsToDevicePixels="True">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected"
Value="true">
<Setter Property="Background"
Value="Red" />
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Foreground"
Value="Gray" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ListBoxItem}"
BasedOn="{StaticResource Style2}">
<Setter Property="SnapsToDevicePixels"
Value="true" />
<Style.Triggers>
<Trigger Property="ListBox.AlternationIndex"
Value="0">
<Setter Property="Background"
Value="CornflowerBlue" />
<Setter Property="Foreground"
Value="Black" />
</Trigger>
<Trigger Property="ItemsControl.AlternationIndex"
Value="1">
<Setter Property="Background"
Value="LightBlue" />
<Setter Property="Foreground"
Value="Red" />
</Trigger>
</Style.Triggers>
</Style>
