Question

wpf combobox的三角形的颜色怎么写

原有的 是黑色的，我想改成自己想要的 颜色？？怎么改？还有就是下拉 后选项的颜色怎么写的？？

Answer 1

正好刚写的Combobox的模板，拿着玩吧。。。觉得不满意就重写，没必要纠结于他怎么做。。。默认模板都不够爽。。。只要修改模板中相关控件的颜色即可。。。
<ControlTemplate TargetType="TextBox" x:Key="ComboBox_TextBox">
<Border x:Name="PART_ContentHost" Focusable="False" Background="{TemplateBinding Background}" BorderBrush="White" BorderThickness="1"/>
</ControlTemplate>
<ControlTemplate x:Key="ComboBoxToggleButton" TargetType="{x:Type ToggleButton}">
<Border Grid.Column="1" Cursor="Hand" BorderBrush="White" BorderThickness="1" Background="#ff00a0a0" Height="21" Width="21">
<Path Data="M 6,7 L 10.5,14 L 15,7 z" Fill="White"/>
</Border>
</ControlTemplate>
<Style TargetType="ComboBox">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox" >
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Border Grid.ColumnSpan="2" BorderBrush="White" BorderThickness="1"/>

<ToggleButton Grid.Column="1" Template="{DynamicResource ComboBoxToggleButton}" x:Name="ToggleButton" Focusable="false" IsChecked="{Binding Path=IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" ClickMode="Press"/>
<ContentPresenter HorizontalAlignment="Left" Margin="3,3,23,3" x:Name="ContentSite" VerticalAlignment="Center" Content="{TemplateBinding SelectionBoxItem}" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" IsHitTestVisible="False"/>

<TextBox Visibility="Hidden" Template="{DynamicResource ComboBox_TextBox}" HorizontalAlignment="Left" x:Name="PART_EditableTextBox" Style="{x:Null}" VerticalAlignment="Center" Focusable="True" Background="Transparent" IsReadOnly="{TemplateBinding IsReadOnly}"/>

<Popup IsOpen="{TemplateBinding IsDropDownOpen}" Placement="Bottom" x:Name="Popup" Focusable="False" AllowsTransparency="True" PopupAnimation="Slide" >
<Grid MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{TemplateBinding ActualWidth}" x:Name="DropDown" SnapsToDevicePixels="True">
<Border x:Name="DropDownBorder" Background="{DynamicResource WindowBackgroundBrush}" BorderBrush="{DynamicResource SolidBorderBrush}" BorderThickness="1"/>
<ScrollViewer Margin="4,6,4,6" Style="{DynamicResource SimpleScrollViewer}" SnapsToDevicePixels="True" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" CanContentScroll="True">

<Border BorderBrush="White" BorderThickness="1" >
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" Background="#01000000"/>
</Border>
</ScrollViewer>
</Grid>
</Popup>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>