停止高亮所选项目的WPF组合框 [英] Stop highlighting selected item WPF ComboBox

问题描述

我目前工作的一个WPF UI和我有我的窗口中的组合框。 所以，我希望用户能够选择该组合框的项目，但在选择时， 我不希望它在默认的蓝色高亮显示。

I'm currently working on a WPF UI and I have a combobox on my window. So I want the user to be able to select an item from this combobox but when it is selected I don't want it to be highlighted in the default blue colour.

我想有一些办法阻止这在XAML，但我一直没能找到解决办法为止。

I assume there is some way to stop this in XAML but I have not been able to find the solution so far.

感谢。

P.S。我没有进入前pression混合所以如果有人提出了一个解决方案，它可以在XAML

P.S. I don't have access to Expression Blend so if anyone suggests a solution could it be in XAML

编辑：只是为了更清楚地我被选中我的意思是，一旦你选择了一个值，SelectionChanged事件已触发，而该项目显示在组合框和组合框，像这样强调：

Just to make it clearer I by selected I mean once you have selected a value and the SelectionChanged event has fired and the item is displayed in the combobox and the combo box is highlighted like so:

推荐答案

您需要通过样式设置外观选择的。

You need to set appearance of your selection via styles.

    <Window.Resources>
    <Style TargetType="{x:Type ComboBoxItem}">
        <Setter Property="Control.Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ComboBoxItem}">
                    <Border Background="{TemplateBinding Background}">
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition />
                                <RowDefinition />
                            </Grid.RowDefinitions>
                            <Border Margin="2" Grid.Row="0" Background="Azure" />
                            <ContentPresenter />
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Background" Value="Green" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

这个样式将被自动应用到窗口内的任何组合框：

This style will be automatically applied to any ComboBoxes within the window:

<StackPanel>
    <ComboBox>
        <ComboBoxItem>111</ComboBoxItem>
        <ComboBoxItem>222</ComboBoxItem>
        <ComboBoxItem>333</ComboBoxItem>
        <ComboBoxItem>444</ComboBoxItem>
        <ComboBoxItem>555</ComboBoxItem>
    </ComboBox>
</StackPanel>

您将看到如下：

UPD：为了去除选定的项目突出了需要修改系统刷其实际用于这些目的。只需添加两个额外的风格：

UPD: In order to remove highlighting from selected item you need to modify system brushes which are actually used for these purposes. Just add two extra styles:

    <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Transparent"/>
    <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Black"/>  

这篇关于停止高亮所选项目的WPF组合框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！