不在焦点时覆盖 ListBoxItem 背景颜色 (.NET 4.5) [英] Overriding ListBoxItem background color when not in focus (.NET 4.5)

问题描述

根据这个，覆盖 ControlBrushKey 资源应该在 ListBox 没有焦点时更改所选项目的背景颜色.我创建了一个简单的例子来反驳这一点:

According to this, overriding the ControlBrushKey resource should change the background color of a ListBox selected item when it doesn't have focus. I created a simple example to disprove this:

 <StackPanel>
    <ListBox>
      <ListBox.Resources>
        <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="LightBlue"/>
        <!--SelectedItem without focus but doesn't really work-->
        <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Orange" />
      </ListBox.Resources>
      <ListBoxItem>
        Item 1
      </ListBoxItem>
      <ListBoxItem>
        Item 2
      </ListBoxItem>
    </ListBox>
    <TextBox></TextBox>
  </StackPanel>

如果您在 .NET 4.5 中运行它，您可以看到它只改变了焦点颜色，而不是非焦点(它在 .NET 4.0 中有效).知道为什么吗?

If you run this in .NET 4.5 you can see that it only changes the in-focus color, but not the not-in-focus (it works in .NET 4.0). Any idea why?

这似乎与 .net 4.5 下的列表/组合框背景和选定颜色.

推荐答案

Try the following for changing the selected ListBoxItem's background color when it has lost focus:

Try the following for changing the selected ListBoxItem's background color when it has lost focus:

XAML

<ListBox.Resources>    
    <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="LightBlue"/> 
    <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey }" Color="Orange" />    
</ListBox.Resources>

C#

listBox.Resources.Add(SystemColors.InactiveSelectionHighlightBrushKey, 
                      new SolidColorBrush(Colors.Orange));

希望对你有用.

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