如何使用交替背景突出显示 WPF Listview 控件中的选定行
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How to highlight selected row in WPF Listview control with alternating background
提问by Bob Bryan
I am using VS 2008 with 3.5 of the .NET framework. I have set up my code to alternate the background lines in a WPF ListView control. One color used is white. The other color used is a light shade of green. When a white line is clicked on, it highlights the line in light blue. When a green line is clicked on, there is no highlighting and the background color remains light green. I have tried specifying the HighlightBrushKey and the ControlBrushKey in XAML, but they had no effect. What do I need to do in order for the green lines to be highlighted when clicked on?
我使用 VS 2008 和 3.5 的 .NET 框架。我已经设置了我的代码来交替 WPF ListView 控件中的背景行。使用的一种颜色是白色。使用的另一种颜色是浅绿色。当单击一条白线时，它会以浅蓝色突出显示该线。单击绿线时，没有突出显示，背景颜色保持浅绿色。我曾尝试在 XAML 中指定 HighlightBrushKey 和 ControlBrushKey，但它们没有效果。我需要做什么才能在单击时突出显示绿线？
Here is the XAML code:
这是 XAML 代码：
<!-- Define the resource for the alternating background background used in the ListView objects. -->
<StackPanel.Resources>
<Style x:Key="alternatingListViewItemStyle" TargetType="{x:Type ListViewItem}">
<Style.Resources>
<!-- Foreground for Selected ListViewItem -->
<!-- <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Black"/> -->
<!-- Background for Selected ListViewItem -->
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Green"/>
<SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Brown"/>
</Style.Resources>
<Style.Triggers>
<!-- Tried setting the background property here, but this did not work.
<DataTrigger Binding="{Binding Path=RowSelected}" Value="True">
<Setter Property="Background" Value="Gainsboro" />
<Setter Property="FontWeight" Value="Bold" />
</DataTrigger> -->
<!-- setting up triggers for alternate background colors -->
<Trigger Property="ItemsControl.AlternationIndex" Value="1">
<Setter Property="Background" Value="#FFD9F2BF"></Setter>
</Trigger>
<!-- setting up triggers for alternate background colors
<Trigger Property="ItemsControl" Value="1">
<Setter Property="Background" Value="#FFD9F2BF"></Setter>
</Trigger> -->
<Trigger Property="ItemsControl.AlternationIndex" Value="2">
<Setter Property="Background" Value="White"></Setter>
</Trigger>
</Style.Triggers>
<!-- setting row height here -->
</Style>
</StackPanel.Resources>
<ListView x:Name="ListView1" ItemContainerStyle="{StaticResource alternatingListViewItemStyle}"
AlternationCount="2" SelectionChanged="ListView1_SelectionChanged" SelectionMode="Multiple"
HorizontalAlignment="Left" ItemsSource = "{Binding ElementName=LobbyWindow, Path=ListCollection1}">
<ListView.View>
<GridView>
<GridViewColumn DisplayMemberBinding="{Binding Game}">
<GridViewColumnHeader Content="Game" FontWeight="Bold" />
</GridViewColumn>
<GridViewColumn DisplayMemberBinding="{Binding Stakes}">
<GridViewColumnHeader Content="Stakes" Width="68" FontWeight="Bold" />
</GridViewColumn>
<GridViewColumn Width="30" DisplayMemberBinding="{Binding Seats}">
<GridViewColumnHeader Content="Seats" FontWeight="Bold" />
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
I also have a Selection_Changed event defined in ListView1, but don't know how to grab the correct property or view element out in order to change the background color for that line:
我也在 ListView1 中定义了一个 Selection_Changed 事件，但不知道如何获取正确的属性或视图元素以更改该行的背景颜色：
private void ListView1_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
ListView listview = sender as ListView;
}
Any suggestions in XAML or C# code behind would be appreciated.
任何在 XAML 或 C# 代码后面的建议将不胜感激。
回答by RonakThakkar
<StackPanel.Resources>
<Style x:Key="alternatingListViewItemStyle"
TargetType="{x:Type ListViewItem}">
<Style.Triggers>
<Trigger Property="ItemsControl.AlternationIndex" Value="0">
<Setter Property="Background" Value="#FFD9F2BF"/>
</Trigger>
<Trigger Property="ItemsControl.AlternationIndex" Value="1">
<Setter Property="Background" Value="White"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="True"/>
<Condition Property="ItemsControl.AlternationIndex" Value="0"/>
</MultiTrigger.Conditions>
<Setter Property="Background" Value="LightGreen"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="True"/>
<Condition Property="ItemsControl.AlternationIndex"
Value="1"/>
</MultiTrigger.Conditions>
<Setter Property="Background" Value="LightBlue"/>
</MultiTrigger>
</Style.Triggers>
</Style>
</StackPanel.Resources>
