我正在尝试为ControlTemplate
a制作 a GroupBox
,如果在其中TextBlock
声明a ,则应将Header
其Background
设置为黄色。
问题是,虽然我在for the中为TextBlock
s定义了一个样式,但除了那些由 WPF 自动生成的 s之外,它并没有应用。ContentPresenter
Header
TextBlock
这是代码:
<Window
x:Class="TestHeaderTemplate.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1"
SizeToContent="WidthAndHeight">
<Window.Resources>
<Style
TargetType="{x:Type GroupBox}">
<Setter
Property="Template">
<Setter.Value>
<ControlTemplate
TargetType="{x:Type GroupBox}">
<Border
Margin="{TemplateBinding Margin}"
BorderBrush="Black"
BorderThickness="1">
<StackPanel>
<Border
Margin="0,0,0,5"
BorderThickness="5"
BorderBrush="LightBlue"
>
<ContentPresenter
ContentSource="Header">
<ContentPresenter.Resources>
<Style
TargetType="{x:Type TextBlock}">
<Setter
Property="Background"
Value="Yellow" />
</Style>
</ContentPresenter.Resources>
</ContentPresenter>
</Border>
<ContentPresenter
ContentSource="Content" />
</StackPanel>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<StackPanel>
<TextBox
Text="All TextBoxes in a GroupBox's Header should be yellow, whether declared or autogenerated." />
<GroupBox
x:Name="firstGroupBox"
Margin="5"
Header="I am a TextBlock autogenerated by WPF. Since I'm in the Header, I should be yellow.">
<TextBlock
Text="I'm a TextBlock declared in the content of the GroupBox. I should NOT be yellow." />
</GroupBox>
<GroupBox
x:Name="secondGroupbox"
Margin="5"
>
<HeaderedContentControl.Header>
<TextBlock
x:Name="notStyledTextBlock"
Text="I'm a TextBlock declared in the header. I should be yellow since I'm in the header."
VerticalAlignment="Center" />
</HeaderedContentControl.Header>
<TextBlock
Text="I'm declared in the content so I should not be yellow." />
</GroupBox>
</StackPanel>
</Window>
试一试可以看到,第二个TextBlock
named的背景不是黄色的,这意味着没有应用in的resources中定义的样式。notStyledTextBlock
GroupBox
ContentPresenter
ControlTemplate
令人惊讶的是,由 WPF 自动生成的作为第一个标题文本容器的文本GroupBox
具有黄色背景。
我该怎么做才能使我的风格应用于notStyledTextBlock
TextBlock
?