Wpf 更改ListBoxItem样式
我想做这样的事Wpf 更改ListBoxItem样式,wpf,xaml,Wpf,Xaml,我想做这样的事 <Style TargetType="{x:Type ListBoxItem}" > <Setter Property="Style"> <Setter.Value> <Border Style="{StaticResource BorderStyle}" Width="200" > </Border> &l
<Style TargetType="{x:Type ListBoxItem}" >
<Setter Property="Style">
<Setter.Value>
<Border Style="{StaticResource BorderStyle}" Width="200" >
</Border>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="BorderStyle" TargetType="{x:Type Border}">
<Setter Property="Background" Value="{StaticResource BackBrush}" />
<Setter Property="BorderBrush" Value="Black" />
<Setter Property="BorderThickness" Value="0.5" />
<Setter Property="CornerRadius" Value="4" />
<Setter Property="Margin" Value="4" />
<Setter Property="Padding" Value="4" />
</Style>
但它给出了下一个错误
无法将“System.Windows.Controls.Border”类型的内容添加到“System.object”类型的对象中
以及使用它的代码
for (int i = 0; i < 10; i++)
{
ListBoxItem lbItem = new ListBoxItem();
lbItem.Content = "Item" + i;
lb1.Add(lbItem);
}
for(int i=0;i<10;i++)
{
ListBoxItem lbItem=新ListBoxItem();
lbItem.Content=“Item”+i;
lb1.增加(lb1项);
}
其中“lb1”是xaml形式的列表框
如何正确地给出ListBoxItemStyle?您似乎对XAML的语义感到困惑。在您更习惯XAML之前,将其视为C#等价物可能会有所帮助。这就是你现在正在做的事情:
Style BorderStyle = new Style();
Border inlineStyle = new Border { Style = BorderStyle };
Style listBoxItemDefaultStyle = new Style();
listBoxItemDefaultStyle.Setters.Add(new Setter(StyleProperty, inlineStyle));
ListBoxItem item = new ListBoxItem { Style = listBoxItemDefaultStyle };
一个问题是,您正在从ListBoxItem样式中的Setter设置ListBoxItem的样式,这当然会导致递归出现某种问题。因此,从我们得到的代码中删除额外的样式:
Style BorderStyle = new Style();
Border inlineStyle = new Border { Style = BorderStyle };
ListBoxItem item = new ListBoxItem { Style = inlineStyle };
这是无效的,因为它正在尝试将样式属性(类型为Style)设置为边框对象。这就是你所看到的错误的核心所在
在这种情况下,您真正想要的是更改ListBoxItem控件模板以合并边框样式。这是修改为使用边框的默认样式,而不是使用TemplateBindings设置其属性的标准样式:
<Style TargetType="{x:Type ListBoxItem}">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
<Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
<Setter Property="Padding" Value="2,0,0,0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<Border x:Name="Bd" Style="{StaticResource BorderStyle}" Width="200">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="true"/>
<Condition Property="Selector.IsSelectionActive" Value="false"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
</MultiTrigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
您想做什么?你能再解释一下吗!我想为listBoxItem创建自己的样式。我希望列表框中的每一项都有我上面显示的边框样式