这基本上是我之前提出的here
问题的后续问题我正在尝试对组合框中的项目进行分组,但我的问题是显示了GroupDescription或项目。
如果我添加collectionView.GroupDescriptions.Add(new PropertyGroupDescription("Team"));
,那么我的ComboBoxItem样式将被忽略(它永远不会到达断点)。那是为什么?
我检查了collectionView
,它包含3组,每组有2个项目。但下拉列表仅显示“分组名称”(即团队名称)。
****** ****** EDIT
问题似乎出现在我的ComboBoxStyle中,因为删除它会让生活变得美妙......
<Style x:Key="ImageComboBox" BasedOn="{StaticResource {x:Type ComboBox}}" TargetType="{x:Type ComboBox}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton Name="ToggleButton" Template="{StaticResource ComboBoxToggleButton}" Grid.Column="2" Focusable="false" IsChecked="{Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource={RelativeSource TemplatedParent}}" ClickMode="Press"/>
<ContentPresenter Name="ContentSite" IsHitTestVisible="False" Content="{TemplateBinding SelectionBoxItem}" ContentTemplate="{StaticResource DisplayImageWithText}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Margin="3,3,23,3" VerticalAlignment="Center" HorizontalAlignment="Left"/>
<TextBox x:Name="PART_EditableTextBox" Style="{x:Null}" Template="{StaticResource ComboBoxTextBox}" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="3,3,23,3" Focusable="True" Background="Transparent" Visibility="Hidden" IsReadOnly="{TemplateBinding IsReadOnly}"/>
<Popup Name="Popup" Placement="Bottom" IsOpen="{TemplateBinding IsDropDownOpen}" AllowsTransparency="True" Focusable="False" PopupAnimation="Slide">
<Grid Name="DropDown" SnapsToDevicePixels="True" MinWidth="{TemplateBinding ActualWidth}" MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder" Background="{StaticResource WindowBackgroundBrush}" BorderThickness="1" BorderBrush="{StaticResource SolidBorderBrush}"/>
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<Grid x:Name="itemsGrid" Height="Auto" Width="Auto" MaxWidth="{TemplateBinding MaxWidth}">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained"/>
</Grid>
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{StaticResource DisabledForegroundBrush}"/>
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
<Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="4"/>
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0"/>
</Trigger>
<Trigger Property="IsEditable" Value="true">
<Setter Property="IsTabStop" Value="false"/>
<Setter TargetName="PART_EditableTextBox" Property="Visibility" Value="Visible"/>
<Setter TargetName="ContentSite" Property="Visibility" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
答案 0 :(得分:1)
根据您提供的信息,我不确定是什么原因引起您的问题。但是下面的代码,这是我在你指定的链接上给出的答案的更新,对我来说很好:
样式:
<Style x:Key="ComboBoxItemStyle" TargetType="ComboBoxItem">
<Setter Property="Foreground" Value="Red"/>
</Style>
<Style x:Key="ComboBoxStyle" BasedOn="{StaticResource {x:Type ComboBox}}" TargetType="{x:Type ComboBox}">
<Setter Property="ItemContainerStyle" Value="{StaticResource ComboBoxItemStyle}"/>
</Style>
组合框:
<ComboBox x:Name="comboBox" Style="{StaticResource ComboBoxStyle}">
<ComboBox.GroupStyle>
<GroupStyle>
<GroupStyle.HeaderTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}"/>
</DataTemplate>
</GroupStyle.HeaderTemplate>
</GroupStyle>
</ComboBox.GroupStyle>
<ComboBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}"/>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
希望这可以帮助您解决问题。