使用C#更改WPF Listbox SelectedItem文本颜色和高亮/背景颜色

Question

我试图在运行时更改突出显示的(选定的)颜色和wpf列表框的突出显示的文本颜色.我尝试过创建一个样式并应用如下:

    Style s = new Style(typeof(ListBox));
    s.Resources.Add(SystemColors.HighlightBrushKey, Setting.ListSelectedColor);
    s.Resources.Add(SystemColors.HighlightTextBrushKey, Setting.ListSelectedTextColor);
    lstGames.Style = s;

但这似乎什么都不做.有没有办法实现这个目标？

编辑:

根据建议,我尝试使用DynamicResources来实现这一目标,但到目前为止,这还没有成功.我的代码:

DYNAMICRESOURCES

<UserControl.Resources>
    <Color x:Key="ListTextSelectedColor"/>
    <Color x:Key="ListSelectedColor"/>
</UserControl.Resources>

列表框

        <ListBox ScrollViewer.HorizontalScrollBarVisibility="Hidden" ScrollViewer.VerticalScrollBarVisibility="Hidden" 
             Name="lstGames" Margin="20" Grid.Row="2" Grid.Column="2" 
             SelectionChanged="lstGames_SelectionChanged" Grid.RowSpan="2" Grid.ColumnSpan="2" 
             Background="{x:Null}" BorderBrush="{x:Null}" SelectionMode="Single"
             FontSize="18" FontFamily="OCR A Extended">
        <Style TargetType="ListBox">
            <Style.Resources>
                <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="{DynamicResource ListSelectedColor}"/>
                <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="{DynamicResource ListSelectedColor}"/>
                <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="{DynamicResource ListTextSelectedColor}"/>
                <SolidColorBrush x:Key="{x:Static SystemColors.ControlTextBrushKey}" Color="{DynamicResource ListTextSelectedColor}"/>
            </Style.Resources>
        </Style>
    </ListBox>

在C#中应用资源

this.Resources["ListSelectedColor"] = SETING.ListSelectedColor.Color;
this.Resources["ListTextSelectedColor"] = SETTING.ListSelectedTextColor.Color;

Answer 1

解:

<Window x:Class="ListBoxStyle.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:src="clr-namespace:ListBoxStyle"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <Style x:Key="_ListBoxItemStyle" TargetType="ListBoxItem">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ListBoxItem">
                        <Border Name="_Border"
                                Padding="2"
                                SnapsToDevicePixels="true">
                            <ContentPresenter />
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsSelected" Value="true">
                                <Setter TargetName="_Border" Property="Background" Value="Yellow"/>
                                <Setter Property="Foreground" Value="Red"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    <Grid>
        <ListBox ItemContainerStyle="{DynamicResource _ListBoxItemStyle}"
                 Width="200" Height="250"
                 ScrollViewer.VerticalScrollBarVisibility="Auto"
                 ScrollViewer.HorizontalScrollBarVisibility="Auto">
            <ListBoxItem>Hello</ListBoxItem>
            <ListBoxItem>Hi</ListBoxItem>
        </ListBox>
    </Grid>
</Window>

Answer 2

感谢Vinkal并且编程失败,我让一切都运转得很漂亮.我创建了以下资源:

<UserControl.Resources>
        <SolidColorBrush x:Key="ListTextSelectedColor" x:Shared="False"/>
        <SolidColorBrush x:Key="ListSelectedColor" x:Shared="False"/>
        <Style x:Key="_ListBoxItemStyle" TargetType="ListBoxItem">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ListBoxItem">
                        <Border Name="_Border"
                                Padding="2"
                                SnapsToDevicePixels="true">
                            <ContentPresenter />
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsSelected" Value="true">
                                <Setter TargetName="_Border" Property="Background" Value="{DynamicResource ResourceKey=ListSelectedColor}"/>
                                <Setter Property="Foreground" Value="{DynamicResource ResourceKey=ListTextSelectedColor}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </UserControl.Resources>

然后将样式应用到我的列表框中:

ItemContainerStyle="{DynamicResource ResourceKey=_ListBoxItemStyle}"

最后,通过执行以下操作更改我的C#代码中的solidcolorbrush资源(因此更改setter值):

    this.Resources["ListSelectedColor"] = EmulatorPage.ListSelectedColor;
    this.Resources["ListTextSelectedColor"] = EmulatorPage.ListSelectedTextColor;

谢谢你们俩!