以 WPF 样式绑定不起作用
Binding In WPF Style Not Working
WPF 4.5
有人可以为 ComboBox 采用以下默认样式并告诉我如何更改它，以便我可以通过顶部的样式 setter 设置 BorderBrush 颜色（或资源画笔）"ComboBox"级别...然后让相同的颜色一直向下流动到 ToggleButton 模板中名为 "Border" 的边框的 BorderBrush 属性，键为 "ComboBoxToggleButton"?
谢谢！！！
<!--##########-->
<!--ComboBox-->
<!--##########-->
<ControlTemplate x:Key="ComboBoxToggleButton" TargetType="{x:Type ToggleButton}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="30" />
</Grid.ColumnDefinitions>
<Border x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}" Grid.ColumnSpan="2" CornerRadius="2,2,2,2" Background="{StaticResource FlowWhiteBrush}" BorderThickness="3,3,3,3" />
<Border Grid.Column="0" CornerRadius="2,0,0,2" Margin="3,3,3,3" Background="{StaticResource FlowWhiteBrush}" />
<Canvas x:Name="canDownArrow" Width="13" Height="13" HorizontalAlignment="Right" Margin="0,0,-19,0">
<Polygon Fill="{StaticResource FlowBlackBrush}">
<Polygon.Points>
<Point X="1" Y="1" />
<Point X="13" Y="1" />
<Point X="7" Y="13" />
</Polygon.Points>
</Polygon>
</Canvas>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Control.IsEnabled" Value="False">
<Setter TargetName="Border" Property="Opacity" Value="0.5"/>
<Setter TargetName="canDownArrow" Property="Opacity" Value="0.35"/>
</Trigger>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowMediumGrayBrush}" />
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource FlowMediumGrayBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowMediumGrayBrush}" />
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource FlowMediumGrayBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="ComboBoxTextBox" TargetType="{x:Type TextBox}">
<Border x:Name="PART_ContentHost" Padding="0,3,0,3" Focusable="False" Background="{TemplateBinding Background}" IsEnabled="{TemplateBinding IsEnabled}" />
</ControlTemplate>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="BorderBrush" Value="Green" /><!-- GREEN DOES NOT MAKE IT DOWN TO ComboBoxToggleButton BorderBrush -->
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll" Value="true" />
<Setter Property="IsEditable" Value="False" />
<Setter Property="ItemTemplate">
<Setter.Value>
<DataTemplate>
<TextBlock FontSize="18" FontWeight="SemiBold" Text="{Binding}" />
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBox}">
<Grid>
<ToggleButton x:Name="ToggleButton" Template="{StaticResource ComboBoxToggleButton}" Grid.Column="2" FocusVisualStyle="{x:Null}" ClickMode="Press" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" />
<ContentPresenter x:Name="ContentSite" IsHitTestVisible="False" Content="{TemplateBinding SelectionBoxItem}" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Margin="6,4,36,5" VerticalAlignment="Center" HorizontalAlignment="Left"></ContentPresenter>
<TextBox x:Name="PART_EditableTextBox" TextBlock.FontSize="18" TextBlock.FontWeight="SemiBold" Template="{StaticResource ComboBoxTextBox}" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="6,4,36,5" Focusable="True" Background="{TemplateBinding Background}" IsEnabled="{TemplateBinding IsEnabled}" IsReadOnly="{TemplateBinding IsReadOnly}" />
<Popup x:Name="Popup" Placement="Bottom" IsOpen="{TemplateBinding IsDropDownOpen}" AllowsTransparency="True" Focusable="False" PopupAnimation="Slide">
<Grid x:Name="DropDown" SnapsToDevicePixels="True" MinWidth="{TemplateBinding ActualWidth}" MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder" BorderThickness="3,3,3,3" BorderBrush="{StaticResource FlowMediumGrayBrush}" Background="{StaticResource FlowWhiteBrush}" />
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEditable" Value="False">
<Setter TargetName="PART_EditableTextBox" Property="IsEnabled" Value="False" />
</Trigger>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="PART_EditableTextBox" Property="Opacity" Value="0.5" />
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false" />
</Trigger>
<Trigger SourceName="Popup" Property="AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="4" />
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border MinHeight="32" x:Name="Border" Padding="2,2,2,2" SnapsToDevicePixels="True" Background="Transparent">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected" />
<VisualState x:Name="Selected" />
<VisualState x:Name="SelectedUnfocused" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter VerticalAlignment="Center" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowLightGrayBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowLightGrayBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
尝试 this.I 像这样在切换按钮模板中添加 BorderBrush 绑定。
<Border x:Name="Border" BorderBrush="{Binding BorderBrush,RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Grid.ColumnSpan="2" CornerRadius="2,2,2,2" Background="{StaticResource FlowWhiteBrush}" BorderThickness="3,3,3,3" />
<Window.Resources>
<SolidColorBrush x:Key="FlowBlackBrush" Color="Black"></SolidColorBrush>
<SolidColorBrush x:Key="FlowWhiteBrush" Color="White"></SolidColorBrush>
<SolidColorBrush x:Key="FlowMediumGrayBrush" Color="DarkGray"></SolidColorBrush>
<SolidColorBrush x:Key="FlowLightGrayBrush" Color="LightGray"></SolidColorBrush>
<ControlTemplate x:Key="ComboBoxToggleButton" TargetType="{x:Type ToggleButton}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="30" />
</Grid.ColumnDefinitions>
<Border x:Name="Border" BorderBrush="{Binding BorderBrush,RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Grid.ColumnSpan="2" CornerRadius="2,2,2,2" Background="{StaticResource FlowWhiteBrush}" BorderThickness="3,3,3,3" />
<Border Grid.Column="0" CornerRadius="2,0,0,2" Margin="3,3,3,3" Background="{StaticResource FlowWhiteBrush}" />
<Canvas x:Name="canDownArrow" Width="13" Height="13" HorizontalAlignment="Right" Margin="0,0,-19,0">
<Polygon Fill="{StaticResource FlowBlackBrush}">
<Polygon.Points>
<Point X="1" Y="1" />
<Point X="13" Y="1" />
<Point X="7" Y="13" />
</Polygon.Points>
</Polygon>
</Canvas>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Control.IsEnabled" Value="False">
<Setter TargetName="Border" Property="Opacity" Value="0.5"/>
<Setter TargetName="canDownArrow" Property="Opacity" Value="0.35"/>
</Trigger>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowMediumGrayBrush}" />
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource FlowMediumGrayBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowMediumGrayBrush}" />
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource FlowMediumGrayBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="ComboBoxTextBox" TargetType="{x:Type TextBox}">
<Border x:Name="PART_ContentHost" Padding="0,3,0,3" Focusable="False" Background="{TemplateBinding Background}" IsEnabled="{TemplateBinding IsEnabled}" />
</ControlTemplate>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="BorderBrush" Value="Green" />
<!-- GREEN DOES NOT MAKE IT DOWN TO ComboBoxToggleButton BorderBrush -->
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll" Value="true" />
<Setter Property="IsEditable" Value="False" />
<Setter Property="ItemTemplate">
<Setter.Value>
<DataTemplate>
<TextBlock FontSize="18" FontWeight="SemiBold" Text="{Binding}" />
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBox}">
<Grid>
<ToggleButton x:Name="ToggleButton" Template="{StaticResource ComboBoxToggleButton}" Grid.Column="2" FocusVisualStyle="{x:Null}" ClickMode="Press" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" />
<ContentPresenter x:Name="ContentSite" IsHitTestVisible="False" Content="{TemplateBinding SelectionBoxItem}" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Margin="6,4,36,5" VerticalAlignment="Center" HorizontalAlignment="Left"></ContentPresenter>
<TextBox x:Name="PART_EditableTextBox" TextBlock.FontSize="18" TextBlock.FontWeight="SemiBold" Template="{StaticResource ComboBoxTextBox}" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="6,4,36,5" Focusable="True" Background="{TemplateBinding Background}" IsEnabled="{TemplateBinding IsEnabled}" IsReadOnly="{TemplateBinding IsReadOnly}" />
<Popup x:Name="Popup" Placement="Bottom" IsOpen="{TemplateBinding IsDropDownOpen}" AllowsTransparency="True" Focusable="False" PopupAnimation="Slide">
<Grid x:Name="DropDown" SnapsToDevicePixels="True" MinWidth="{TemplateBinding ActualWidth}" MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder" BorderThickness="3,3,3,3" BorderBrush="{StaticResource FlowMediumGrayBrush}" Background="{StaticResource FlowWhiteBrush}" />
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEditable" Value="False">
<Setter TargetName="PART_EditableTextBox" Property="IsEnabled" Value="False" />
</Trigger>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="PART_EditableTextBox" Property="Opacity" Value="0.5" />
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false" />
</Trigger>
<Trigger SourceName="Popup" Property="AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="4" />
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border MinHeight="32" x:Name="Border" Padding="2,2,2,2" SnapsToDevicePixels="True" Background="Transparent">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected" />
<VisualState x:Name="Selected" />
<VisualState x:Name="SelectedUnfocused" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter VerticalAlignment="Center" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowLightGrayBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowLightGrayBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<ComboBox Width="200" Height="30"></ComboBox>
WPF 4.5
有人可以为 ComboBox 采用以下默认样式并告诉我如何更改它，以便我可以通过顶部的样式 setter 设置 BorderBrush 颜色（或资源画笔）"ComboBox"级别...然后让相同的颜色一直向下流动到 ToggleButton 模板中名为 "Border" 的边框的 BorderBrush 属性，键为 "ComboBoxToggleButton"?
谢谢！！！
<!--##########-->
<!--ComboBox-->
<!--##########-->
<ControlTemplate x:Key="ComboBoxToggleButton" TargetType="{x:Type ToggleButton}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="30" />
</Grid.ColumnDefinitions>
<Border x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}" Grid.ColumnSpan="2" CornerRadius="2,2,2,2" Background="{StaticResource FlowWhiteBrush}" BorderThickness="3,3,3,3" />
<Border Grid.Column="0" CornerRadius="2,0,0,2" Margin="3,3,3,3" Background="{StaticResource FlowWhiteBrush}" />
<Canvas x:Name="canDownArrow" Width="13" Height="13" HorizontalAlignment="Right" Margin="0,0,-19,0">
<Polygon Fill="{StaticResource FlowBlackBrush}">
<Polygon.Points>
<Point X="1" Y="1" />
<Point X="13" Y="1" />
<Point X="7" Y="13" />
</Polygon.Points>
</Polygon>
</Canvas>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Control.IsEnabled" Value="False">
<Setter TargetName="Border" Property="Opacity" Value="0.5"/>
<Setter TargetName="canDownArrow" Property="Opacity" Value="0.35"/>
</Trigger>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowMediumGrayBrush}" />
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource FlowMediumGrayBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowMediumGrayBrush}" />
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource FlowMediumGrayBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="ComboBoxTextBox" TargetType="{x:Type TextBox}">
<Border x:Name="PART_ContentHost" Padding="0,3,0,3" Focusable="False" Background="{TemplateBinding Background}" IsEnabled="{TemplateBinding IsEnabled}" />
</ControlTemplate>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="BorderBrush" Value="Green" /><!-- GREEN DOES NOT MAKE IT DOWN TO ComboBoxToggleButton BorderBrush -->
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll" Value="true" />
<Setter Property="IsEditable" Value="False" />
<Setter Property="ItemTemplate">
<Setter.Value>
<DataTemplate>
<TextBlock FontSize="18" FontWeight="SemiBold" Text="{Binding}" />
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBox}">
<Grid>
<ToggleButton x:Name="ToggleButton" Template="{StaticResource ComboBoxToggleButton}" Grid.Column="2" FocusVisualStyle="{x:Null}" ClickMode="Press" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" />
<ContentPresenter x:Name="ContentSite" IsHitTestVisible="False" Content="{TemplateBinding SelectionBoxItem}" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Margin="6,4,36,5" VerticalAlignment="Center" HorizontalAlignment="Left"></ContentPresenter>
<TextBox x:Name="PART_EditableTextBox" TextBlock.FontSize="18" TextBlock.FontWeight="SemiBold" Template="{StaticResource ComboBoxTextBox}" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="6,4,36,5" Focusable="True" Background="{TemplateBinding Background}" IsEnabled="{TemplateBinding IsEnabled}" IsReadOnly="{TemplateBinding IsReadOnly}" />
<Popup x:Name="Popup" Placement="Bottom" IsOpen="{TemplateBinding IsDropDownOpen}" AllowsTransparency="True" Focusable="False" PopupAnimation="Slide">
<Grid x:Name="DropDown" SnapsToDevicePixels="True" MinWidth="{TemplateBinding ActualWidth}" MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder" BorderThickness="3,3,3,3" BorderBrush="{StaticResource FlowMediumGrayBrush}" Background="{StaticResource FlowWhiteBrush}" />
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEditable" Value="False">
<Setter TargetName="PART_EditableTextBox" Property="IsEnabled" Value="False" />
</Trigger>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="PART_EditableTextBox" Property="Opacity" Value="0.5" />
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false" />
</Trigger>
<Trigger SourceName="Popup" Property="AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="4" />
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border MinHeight="32" x:Name="Border" Padding="2,2,2,2" SnapsToDevicePixels="True" Background="Transparent">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected" />
<VisualState x:Name="Selected" />
<VisualState x:Name="SelectedUnfocused" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter VerticalAlignment="Center" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowLightGrayBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowLightGrayBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
尝试 this.I 像这样在切换按钮模板中添加 BorderBrush 绑定。
<Border x:Name="Border" BorderBrush="{Binding BorderBrush,RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Grid.ColumnSpan="2" CornerRadius="2,2,2,2" Background="{StaticResource FlowWhiteBrush}" BorderThickness="3,3,3,3" />
<Window.Resources>
<SolidColorBrush x:Key="FlowBlackBrush" Color="Black"></SolidColorBrush>
<SolidColorBrush x:Key="FlowWhiteBrush" Color="White"></SolidColorBrush>
<SolidColorBrush x:Key="FlowMediumGrayBrush" Color="DarkGray"></SolidColorBrush>
<SolidColorBrush x:Key="FlowLightGrayBrush" Color="LightGray"></SolidColorBrush>
<ControlTemplate x:Key="ComboBoxToggleButton" TargetType="{x:Type ToggleButton}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="30" />
</Grid.ColumnDefinitions>
<Border x:Name="Border" BorderBrush="{Binding BorderBrush,RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Grid.ColumnSpan="2" CornerRadius="2,2,2,2" Background="{StaticResource FlowWhiteBrush}" BorderThickness="3,3,3,3" />
<Border Grid.Column="0" CornerRadius="2,0,0,2" Margin="3,3,3,3" Background="{StaticResource FlowWhiteBrush}" />
<Canvas x:Name="canDownArrow" Width="13" Height="13" HorizontalAlignment="Right" Margin="0,0,-19,0">
<Polygon Fill="{StaticResource FlowBlackBrush}">
<Polygon.Points>
<Point X="1" Y="1" />
<Point X="13" Y="1" />
<Point X="7" Y="13" />
</Polygon.Points>
</Polygon>
</Canvas>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Control.IsEnabled" Value="False">
<Setter TargetName="Border" Property="Opacity" Value="0.5"/>
<Setter TargetName="canDownArrow" Property="Opacity" Value="0.35"/>
</Trigger>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowMediumGrayBrush}" />
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource FlowMediumGrayBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowMediumGrayBrush}" />
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource FlowMediumGrayBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="ComboBoxTextBox" TargetType="{x:Type TextBox}">
<Border x:Name="PART_ContentHost" Padding="0,3,0,3" Focusable="False" Background="{TemplateBinding Background}" IsEnabled="{TemplateBinding IsEnabled}" />
</ControlTemplate>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="BorderBrush" Value="Green" />
<!-- GREEN DOES NOT MAKE IT DOWN TO ComboBoxToggleButton BorderBrush -->
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll" Value="true" />
<Setter Property="IsEditable" Value="False" />
<Setter Property="ItemTemplate">
<Setter.Value>
<DataTemplate>
<TextBlock FontSize="18" FontWeight="SemiBold" Text="{Binding}" />
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBox}">
<Grid>
<ToggleButton x:Name="ToggleButton" Template="{StaticResource ComboBoxToggleButton}" Grid.Column="2" FocusVisualStyle="{x:Null}" ClickMode="Press" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" />
<ContentPresenter x:Name="ContentSite" IsHitTestVisible="False" Content="{TemplateBinding SelectionBoxItem}" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Margin="6,4,36,5" VerticalAlignment="Center" HorizontalAlignment="Left"></ContentPresenter>
<TextBox x:Name="PART_EditableTextBox" TextBlock.FontSize="18" TextBlock.FontWeight="SemiBold" Template="{StaticResource ComboBoxTextBox}" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="6,4,36,5" Focusable="True" Background="{TemplateBinding Background}" IsEnabled="{TemplateBinding IsEnabled}" IsReadOnly="{TemplateBinding IsReadOnly}" />
<Popup x:Name="Popup" Placement="Bottom" IsOpen="{TemplateBinding IsDropDownOpen}" AllowsTransparency="True" Focusable="False" PopupAnimation="Slide">
<Grid x:Name="DropDown" SnapsToDevicePixels="True" MinWidth="{TemplateBinding ActualWidth}" MaxHeight="{TemplateBinding MaxDropDownHeight}">
<Border x:Name="DropDownBorder" BorderThickness="3,3,3,3" BorderBrush="{StaticResource FlowMediumGrayBrush}" Background="{StaticResource FlowWhiteBrush}" />
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEditable" Value="False">
<Setter TargetName="PART_EditableTextBox" Property="IsEnabled" Value="False" />
</Trigger>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="PART_EditableTextBox" Property="Opacity" Value="0.5" />
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false" />
</Trigger>
<Trigger SourceName="Popup" Property="AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="4" />
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type ComboBoxItem}">
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBoxItem}">
<Border MinHeight="32" x:Name="Border" Padding="2,2,2,2" SnapsToDevicePixels="True" Background="Transparent">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected" />
<VisualState x:Name="Selected" />
<VisualState x:Name="SelectedUnfocused" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter VerticalAlignment="Center" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsFocused" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowLightGrayBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="{StaticResource FlowLightGrayBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<ComboBox Width="200" Height="30"></ComboBox>