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C＃WPF BorderBrush不會設置顏色

2017-02-13 112 views
1

我有一個實際上不會改變邊框顏色的邊框刷。這是我的組合框的XAML。有任何想法嗎？C＃WPF BorderBrush不會設置顏色

<ComboBox IsEditable="True" IsReadOnly="False" 
         Text="{Binding Model.Number}" ItemsSource="{Binding Item}" 
         SelectedItem="{Binding Model.Number}"  
         VerticalAlignment="Top" 
         BorderBrush="Red" 
         BorderThickness="2"> 
</ComboBox>

來源

2017-02-13 KrystianB

回答

2

您需要修改ComboBox的ControlTemplate爲了能夠改變它的邊框顏色。你可以閱讀更多關於爲什麼在這裏：https://blog.magnusmontin.net/2014/04/30/changing-the-background-colour-of-a-combobox-in-wpf-on-windows-8/。

您可以通過在Visual Studio中右鍵單擊設計模式下的ComboBox元素並將其選中「編輯模板」 - >「編輯副本...」，將默認模板複製到您的XAML標記中，然後將其修改爲根據您的要求。

這是引用了很多XAML，但它在這裏。查找名爲「ComboBox.Static.Editable.Border」的資源，並更改Color的屬性以更改可編輯的ComboBox的邊框顏色。不要忘記添加對PresentationFramework.Aero2.dll的引用。

<Window x:Class="WpfApplication1.MainWindow" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     xmlns:Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero2" 
     mc:Ignorable="d" 
     Title="MainWindow" Height="300" Width="300"> 
    <Window.Resources> 
     <Style x:Key="FocusVisual"> 
      <Setter Property="Control.Template"> 
       <Setter.Value> 
        <ControlTemplate> 
         <Rectangle Margin="2" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/> 
        </ControlTemplate> 
       </Setter.Value> 
      </Setter> 
     </Style> 
     <LinearGradientBrush x:Key="ComboBox.Static.Background" EndPoint="0,1" StartPoint="0,0"> 
      <GradientStop Color="#FFF0F0F0" Offset="0.0"/> 
      <GradientStop Color="#FFE5E5E5" Offset="1.0"/> 
     </LinearGradientBrush> 
     <SolidColorBrush x:Key="ComboBox.Static.Border" Color="#FFACACAC"/> 
     <SolidColorBrush x:Key="ComboBox.Static.Editable.Background" Color="#FFFFFFFF"/> 
     <SolidColorBrush x:Key="ComboBox.Static.Editable.Border" Color="Red"/> 
     <SolidColorBrush x:Key="ComboBox.Static.Editable.Button.Background" Color="Transparent"/> 
     <SolidColorBrush x:Key="ComboBox.Static.Editable.Button.Border" Color="Transparent"/> 
     <SolidColorBrush x:Key="ComboBox.MouseOver.Glyph" Color="#FF000000"/> 
     <LinearGradientBrush x:Key="ComboBox.MouseOver.Background" EndPoint="0,1" StartPoint="0,0"> 
      <GradientStop Color="#FFECF4FC" Offset="0.0"/> 
      <GradientStop Color="#FFDCECFC" Offset="1.0"/> 
     </LinearGradientBrush> 
     <SolidColorBrush x:Key="ComboBox.MouseOver.Border" Color="#FF7EB4EA"/> 
     <SolidColorBrush x:Key="ComboBox.MouseOver.Editable.Background" Color="#FFFFFFFF"/> 
     <SolidColorBrush x:Key="ComboBox.MouseOver.Editable.Border" Color="#FF7EB4EA"/> 
     <LinearGradientBrush x:Key="ComboBox.MouseOver.Editable.Button.Background" EndPoint="0,1" StartPoint="0,0"> 
      <GradientStop Color="#FFEBF4FC" Offset="0.0"/> 
      <GradientStop Color="#FFDCECFC" Offset="1.0"/> 
     </LinearGradientBrush> 
     <SolidColorBrush x:Key="ComboBox.MouseOver.Editable.Button.Border" Color="#FF7EB4EA"/> 
     <SolidColorBrush x:Key="ComboBox.Pressed.Glyph" Color="#FF000000"/> 
     <LinearGradientBrush x:Key="ComboBox.Pressed.Background" EndPoint="0,1" StartPoint="0,0"> 
      <GradientStop Color="#FFDAECFC" Offset="0.0"/> 
      <GradientStop Color="#FFC4E0FC" Offset="1.0"/> 
     </LinearGradientBrush> 
     <SolidColorBrush x:Key="ComboBox.Pressed.Border" Color="#FF569DE5"/> 
     <SolidColorBrush x:Key="ComboBox.Pressed.Editable.Background" Color="#FFFFFFFF"/> 
     <SolidColorBrush x:Key="ComboBox.Pressed.Editable.Border" Color="#FF569DE5"/> 
     <LinearGradientBrush x:Key="ComboBox.Pressed.Editable.Button.Background" EndPoint="0,1" StartPoint="0,0"> 
      <GradientStop Color="#FFDAEBFC" Offset="0.0"/> 
      <GradientStop Color="#FFC4E0FC" Offset="1.0"/> 
     </LinearGradientBrush> 
     <SolidColorBrush x:Key="ComboBox.Pressed.Editable.Button.Border" Color="#FF569DE5"/> 
     <SolidColorBrush x:Key="ComboBox.Disabled.Glyph" Color="#FFBFBFBF"/> 
     <SolidColorBrush x:Key="ComboBox.Disabled.Background" Color="#FFF0F0F0"/> 
     <SolidColorBrush x:Key="ComboBox.Disabled.Border" Color="#FFD9D9D9"/> 
     <SolidColorBrush x:Key="ComboBox.Disabled.Editable.Background" Color="#FFFFFFFF"/> 
     <SolidColorBrush x:Key="ComboBox.Disabled.Editable.Border" Color="#FFBFBFBF"/> 
     <SolidColorBrush x:Key="ComboBox.Disabled.Editable.Button.Background" Color="Transparent"/> 
     <SolidColorBrush x:Key="ComboBox.Disabled.Editable.Button.Border" Color="Transparent"/> 
     <SolidColorBrush x:Key="ComboBox.Static.Glyph" Color="#FF606060"/> 
     <Style x:Key="ComboBoxToggleButton" TargetType="{x:Type ToggleButton}"> 
      <Setter Property="OverridesDefaultStyle" Value="true"/> 
      <Setter Property="IsTabStop" Value="false"/> 
      <Setter Property="Focusable" Value="false"/> 
      <Setter Property="ClickMode" Value="Press"/> 
      <Setter Property="Template"> 
       <Setter.Value> 
        <ControlTemplate TargetType="{x:Type ToggleButton}"> 
         <Border x:Name="templateRoot" BorderBrush="{StaticResource ComboBox.Static.Border}" BorderThickness="{TemplateBinding BorderThickness}" Background="{StaticResource ComboBox.Static.Background}" SnapsToDevicePixels="true"> 
          <Border x:Name="splitBorder" BorderBrush="Transparent" BorderThickness="1" HorizontalAlignment="Right" Margin="0" SnapsToDevicePixels="true" Width="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"> 
           <Path x:Name="arrow" Data="F1 M 0,0 L 2.667,2.66665 L 5.3334,0 L 5.3334,-1.78168 L 2.6667,0.88501 L0,-1.78168 L0,0 Z" Fill="{StaticResource ComboBox.Static.Glyph}" HorizontalAlignment="Center" Margin="0" VerticalAlignment="Center"/> 
          </Border> 
         </Border> 
         <ControlTemplate.Triggers> 
          <MultiDataTrigger> 
           <MultiDataTrigger.Conditions> 
            <Condition Binding="{Binding IsEditable, RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Value="true"/> 
            <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="false"/> 
            <Condition Binding="{Binding IsPressed, RelativeSource={RelativeSource Self}}" Value="false"/> 
            <Condition Binding="{Binding IsEnabled, RelativeSource={RelativeSource Self}}" Value="true"/> 
           </MultiDataTrigger.Conditions> 
           <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource ComboBox.Static.Editable.Background}"/> 
           <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource ComboBox.Static.Editable.Border}"/> 
           <Setter Property="Background" TargetName="splitBorder" Value="{StaticResource ComboBox.Static.Editable.Button.Background}"/> 
           <Setter Property="BorderBrush" TargetName="splitBorder" Value="{StaticResource ComboBox.Static.Editable.Button.Border}"/> 
          </MultiDataTrigger> 
          <Trigger Property="IsMouseOver" Value="true"> 
           <Setter Property="Fill" TargetName="arrow" Value="{StaticResource ComboBox.MouseOver.Glyph}"/> 
          </Trigger> 
          <MultiDataTrigger> 
           <MultiDataTrigger.Conditions> 
            <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="true"/> 
            <Condition Binding="{Binding IsEditable, RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Value="false"/> 
           </MultiDataTrigger.Conditions> 
           <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource ComboBox.MouseOver.Background}"/> 
           <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource ComboBox.MouseOver.Border}"/> 
          </MultiDataTrigger> 
          <MultiDataTrigger> 
           <MultiDataTrigger.Conditions> 
            <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="true"/> 
            <Condition Binding="{Binding IsEditable, RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Value="true"/> 
           </MultiDataTrigger.Conditions> 
           <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource ComboBox.MouseOver.Editable.Background}"/> 
           <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource ComboBox.MouseOver.Editable.Border}"/> 
           <Setter Property="Background" TargetName="splitBorder" Value="{StaticResource ComboBox.MouseOver.Editable.Button.Background}"/> 
           <Setter Property="BorderBrush" TargetName="splitBorder" Value="{StaticResource ComboBox.MouseOver.Editable.Button.Border}"/> 
          </MultiDataTrigger> 
          <Trigger Property="IsPressed" Value="true"> 
           <Setter Property="Fill" TargetName="arrow" Value="{StaticResource ComboBox.Pressed.Glyph}"/> 
          </Trigger> 
          <MultiDataTrigger> 
           <MultiDataTrigger.Conditions> 
            <Condition Binding="{Binding IsPressed, RelativeSource={RelativeSource Self}}" Value="true"/> 
            <Condition Binding="{Binding IsEditable, RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Value="false"/> 
           </MultiDataTrigger.Conditions> 
           <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource ComboBox.Pressed.Background}"/> 
           <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource ComboBox.Pressed.Border}"/> 
          </MultiDataTrigger> 
          <MultiDataTrigger> 
           <MultiDataTrigger.Conditions> 
            <Condition Binding="{Binding IsPressed, RelativeSource={RelativeSource Self}}" Value="true"/> 
            <Condition Binding="{Binding IsEditable, RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Value="true"/> 
           </MultiDataTrigger.Conditions> 
           <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource ComboBox.Pressed.Editable.Background}"/> 
           <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource ComboBox.Pressed.Editable.Border}"/> 
           <Setter Property="Background" TargetName="splitBorder" Value="{StaticResource ComboBox.Pressed.Editable.Button.Background}"/> 
           <Setter Property="BorderBrush" TargetName="splitBorder" Value="{StaticResource ComboBox.Pressed.Editable.Button.Border}"/> 
          </MultiDataTrigger> 
          <Trigger Property="IsEnabled" Value="false"> 
           <Setter Property="Fill" TargetName="arrow" Value="{StaticResource ComboBox.Disabled.Glyph}"/> 
          </Trigger> 
          <MultiDataTrigger> 
           <MultiDataTrigger.Conditions> 
            <Condition Binding="{Binding IsEnabled, RelativeSource={RelativeSource Self}}" Value="false"/> 
            <Condition Binding="{Binding IsEditable, RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Value="false"/> 
           </MultiDataTrigger.Conditions> 
           <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource ComboBox.Disabled.Background}"/> 
           <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource ComboBox.Disabled.Border}"/> 
          </MultiDataTrigger> 
          <MultiDataTrigger> 
           <MultiDataTrigger.Conditions> 
            <Condition Binding="{Binding IsEnabled, RelativeSource={RelativeSource Self}}" Value="false"/> 
            <Condition Binding="{Binding IsEditable, RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" Value="true"/> 
           </MultiDataTrigger.Conditions> 
           <Setter Property="Background" TargetName="templateRoot" Value="{StaticResource ComboBox.Disabled.Editable.Background}"/> 
           <Setter Property="BorderBrush" TargetName="templateRoot" Value="{StaticResource ComboBox.Disabled.Editable.Border}"/> 
           <Setter Property="Background" TargetName="splitBorder" Value="{StaticResource ComboBox.Disabled.Editable.Button.Background}"/> 
           <Setter Property="BorderBrush" TargetName="splitBorder" Value="{StaticResource ComboBox.Disabled.Editable.Button.Border}"/> 
          </MultiDataTrigger> 
         </ControlTemplate.Triggers> 
        </ControlTemplate> 
       </Setter.Value> 
      </Setter> 
     </Style> 
     <ControlTemplate x:Key="ComboBoxTemplate" TargetType="{x:Type ComboBox}"> 
      <Grid x:Name="templateRoot" SnapsToDevicePixels="true"> 
       <Grid.ColumnDefinitions> 
        <ColumnDefinition Width="*"/> 
        <ColumnDefinition MinWidth="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}" Width="0"/> 
       </Grid.ColumnDefinitions> 
       <Popup x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{DynamicResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom"> 
        <Themes:SystemDropShadowChrome x:Name="shadow" Color="Transparent" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}"> 
         <Border x:Name="dropDownBorder" BorderBrush="{DynamicResource {x:Static SystemColors.WindowFrameBrushKey}}" BorderThickness="1" Background="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"> 
          <ScrollViewer x:Name="DropDownScrollViewer"> 
           <Grid x:Name="grid" RenderOptions.ClearTypeHint="Enabled"> 
            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0"> 
             <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/> 
            </Canvas> 
            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> 
           </Grid> 
          </ScrollViewer> 
         </Border> 
        </Themes:SystemDropShadowChrome> 
       </Popup> 
       <ToggleButton x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/> 
       <ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Content="{TemplateBinding SelectionBoxItem}" ContentStringFormat="{TemplateBinding SelectionBoxItemStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="false" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/> 
      </Grid> 
      <ControlTemplate.Triggers> 
       <Trigger Property="HasDropShadow" SourceName="PART_Popup" Value="true"> 
        <Setter Property="Margin" TargetName="shadow" Value="0,0,5,5"/> 
        <Setter Property="Color" TargetName="shadow" Value="#71000000"/> 
       </Trigger> 
       <Trigger Property="HasItems" Value="false"> 
        <Setter Property="Height" TargetName="dropDownBorder" Value="95"/> 
       </Trigger> 
       <MultiTrigger> 
        <MultiTrigger.Conditions> 
         <Condition Property="IsGrouping" Value="true"/> 
         <Condition Property="VirtualizingPanel.IsVirtualizingWhenGrouping" Value="false"/> 
        </MultiTrigger.Conditions> 
        <Setter Property="ScrollViewer.CanContentScroll" Value="false"/> 
       </MultiTrigger> 
       <Trigger Property="ScrollViewer.CanContentScroll" SourceName="DropDownScrollViewer" Value="false"> 
        <Setter Property="Canvas.Top" TargetName="opaqueRect" Value="{Binding VerticalOffset, ElementName=DropDownScrollViewer}"/> 
        <Setter Property="Canvas.Left" TargetName="opaqueRect" Value="{Binding HorizontalOffset, ElementName=DropDownScrollViewer}"/> 
       </Trigger> 
      </ControlTemplate.Triggers> 
     </ControlTemplate> 
     <SolidColorBrush x:Key="TextBox.Static.Background" Color="#FFFFFFFF"/> 
     <Style x:Key="ComboBoxEditableTextBox" TargetType="{x:Type TextBox}"> 
      <Setter Property="OverridesDefaultStyle" Value="true"/> 
      <Setter Property="AllowDrop" Value="true"/> 
      <Setter Property="MinWidth" Value="0"/> 
      <Setter Property="MinHeight" Value="0"/> 
      <Setter Property="FocusVisualStyle" Value="{x:Null}"/> 
      <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/> 
      <Setter Property="Stylus.IsFlicksEnabled" Value="False"/> 
      <Setter Property="Template"> 
       <Setter.Value> 
        <ControlTemplate TargetType="{x:Type TextBox}"> 
         <ScrollViewer x:Name="PART_ContentHost" Background="Transparent" Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden"/> 
        </ControlTemplate> 
       </Setter.Value> 
      </Setter> 
     </Style> 
     <ControlTemplate x:Key="ComboBoxEditableTemplate" TargetType="{x:Type ComboBox}"> 
      <Grid x:Name="templateRoot" SnapsToDevicePixels="true"> 
       <Grid.ColumnDefinitions> 
        <ColumnDefinition Width="*"/> 
        <ColumnDefinition MinWidth="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}" Width="0"/> 
       </Grid.ColumnDefinitions> 
       <Popup x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom"> 
        <Themes:SystemDropShadowChrome x:Name="shadow" Color="Transparent" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}"> 
         <Border x:Name="dropDownBorder" BorderBrush="{DynamicResource {x:Static SystemColors.WindowFrameBrushKey}}" BorderThickness="1" Background="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"> 
          <ScrollViewer x:Name="DropDownScrollViewer"> 
           <Grid x:Name="grid" RenderOptions.ClearTypeHint="Enabled"> 
            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0"> 
             <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/> 
            </Canvas> 
            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> 
           </Grid> 
          </ScrollViewer> 
         </Border> 
        </Themes:SystemDropShadowChrome> 
       </Popup> 
       <ToggleButton x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/> 
       <Border x:Name="border" Background="{StaticResource TextBox.Static.Background}" Margin="{TemplateBinding BorderThickness}"> 
        <TextBox x:Name="PART_EditableTextBox" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsReadOnly="{Binding IsReadOnly, RelativeSource={RelativeSource TemplatedParent}}" Margin="{TemplateBinding Padding}" Style="{StaticResource ComboBoxEditableTextBox}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/> 
       </Border> 
      </Grid> 
      <ControlTemplate.Triggers> 
       <Trigger Property="IsEnabled" Value="false"> 
        <Setter Property="Opacity" TargetName="border" Value="0.56"/> 
       </Trigger> 
       <Trigger Property="IsKeyboardFocusWithin" Value="true"> 
        <Setter Property="Foreground" Value="Black"/> 
       </Trigger> 
       <Trigger Property="HasDropShadow" SourceName="PART_Popup" Value="true"> 
        <Setter Property="Margin" TargetName="shadow" Value="0,0,5,5"/> 
        <Setter Property="Color" TargetName="shadow" Value="#71000000"/> 
       </Trigger> 
       <Trigger Property="HasItems" Value="false"> 
        <Setter Property="Height" TargetName="dropDownBorder" Value="95"/> 
       </Trigger> 
       <MultiTrigger> 
        <MultiTrigger.Conditions> 
         <Condition Property="IsGrouping" Value="true"/> 
         <Condition Property="VirtualizingPanel.IsVirtualizingWhenGrouping" Value="false"/> 
        </MultiTrigger.Conditions> 
        <Setter Property="ScrollViewer.CanContentScroll" Value="false"/> 
       </MultiTrigger> 
       <Trigger Property="ScrollViewer.CanContentScroll" SourceName="DropDownScrollViewer" Value="false"> 
        <Setter Property="Canvas.Top" TargetName="opaqueRect" Value="{Binding VerticalOffset, ElementName=DropDownScrollViewer}"/> 
        <Setter Property="Canvas.Left" TargetName="opaqueRect" Value="{Binding HorizontalOffset, ElementName=DropDownScrollViewer}"/> 
       </Trigger> 
      </ControlTemplate.Triggers> 
     </ControlTemplate> 
     <Style x:Key="ComboBoxStyle1" TargetType="{x:Type ComboBox}"> 
      <Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/> 
      <Setter Property="Background" Value="{StaticResource ComboBox.Static.Background}"/> 
      <Setter Property="BorderBrush" Value="{StaticResource ComboBox.Static.Border}"/> 
      <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/> 
      <Setter Property="BorderThickness" Value="1"/> 
      <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/> 
      <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/> 
      <Setter Property="Padding" Value="6,3,5,3"/> 
      <Setter Property="ScrollViewer.CanContentScroll" Value="true"/> 
      <Setter Property="ScrollViewer.PanningMode" Value="Both"/> 
      <Setter Property="Stylus.IsFlicksEnabled" Value="False"/> 
      <Setter Property="Template" Value="{StaticResource ComboBoxTemplate}"/> 
      <Style.Triggers> 
       <Trigger Property="IsEditable" Value="true"> 
        <Setter Property="IsTabStop" Value="false"/> 
        <Setter Property="Padding" Value="2"/> 
        <Setter Property="Template" Value="{StaticResource ComboBoxEditableTemplate}"/> 
       </Trigger> 
      </Style.Triggers> 
     </Style> 
    </Window.Resources> 
    <Grid> 
     <ComboBox Style="{DynamicResource ComboBoxStyle1}" IsEditable="True" /> 
    </Grid> 
</Window>

還應該提到的是，Windows上不同版本的默認模板不同。上述內容適用於Windows 10.

不，沒有辦法通過簡單地設置屬性或執行類似操作來更改邊框顏色:)您必須修改模板。

來源

2017-02-13 14:02:43 mm8

+1

另一個好的答案排除了避免學習正確方式的痛苦。 –

2

如果您只是想在您的ComboBox（或任何其他控件）周圍出現紅色邊框，則可以使用Border。

<Border BorderBrush="Red" 
      BorderThickness="2"> 
    <ComboBox IsEditable="True" 
       IsReadOnly="False" 
       Text="{Binding Model.Number}" 
       ItemsSource="{Binding Item}" 
       SelectedItem="{Binding Model.Number}" 
       VerticalAlignment="Top"></ComboBox> 
</Border>

來源

2017-02-13 14:06:02 Mat

+1

對你的View和Application的每一個控件使用邊框是一個可怕的解決方案。 @ mm8指出了正確的答案。 –

+1

取決於您的要求。如果您只需爲單個ComboBox創建紅色邊框，則不希望所有的ControlTemplate都有開銷。如果你想改變所有ComboBoxes的情況是不同的，但OP似乎並沒有要求一種通用的方式... – Mat

+0

這增加了*另一個*邊界*圍繞*組合框。它不會更改組合框本身的實際邊框。 – mm8

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