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我對WPF和XAML比較陌生，在Windows 10中遇到了ComboBox和背景顏色問題。我創建了一個ComboBox控件模板，這很大程度上解決了我的問題。但是，打開組合框時，作爲當前選定項目的項目具有淺色背景，由於前景爲白色，所以難以閱讀。我需要讓所選項目的背景更暗。我尋找的答案無濟於事。我錯過了什麼？XAML組合框選定的項目在Windows 10中的背景顏色
這是我目前看到的：
這裏是ComboBox聲明：
<ComboBox x:Name="_comboBoxUserName" Height="23" Margin="4" VerticalAlignment="Top" SelectionChanged="_userName_SelectionChanged" IsEditable="True" Style="{DynamicResource ComboBoxStyle}" Foreground="{StaticResource BrushICWhite}" Background="{StaticResource BrushICBlue}" Template="{DynamicResource ComboBoxCT}" ItemContainerStyle="{DynamicResource ComboBoxItemStyle}"/>
這裏是ComboBox控件模板： 編輯：我編輯的模板包括我已添加的SolidColorBrush元素。
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero">
<ControlTemplate x:Key="ComboBoxCT" TargetType="{x:Type ComboBox}">
<Grid x:Name="Placement" SnapsToDevicePixels="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</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="Shdw" Color="Transparent" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=Placement}">
<Border x:Name="DropDownBorder" BorderBrush="{DynamicResource {x:Static SystemColors.WindowFrameBrushKey}}" BorderThickness="1" Background="{DynamicResource {x:Static SystemColors.WindowBrushKey}}">
<ScrollViewer x:Name="DropDownScrollViewer">
<Grid RenderOptions.ClearTypeHint="Enabled">
<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>
<Themes:ListBoxChrome x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" RenderMouseOver="{TemplateBinding IsMouseOver}" RenderFocused="{TemplateBinding IsKeyboardFocusWithin}"/>
<TextBox x:Name="PART_EditableTextBox" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsReadOnly="{Binding IsReadOnly, RelativeSource={RelativeSource TemplatedParent}}" Margin="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}">
<TextBox.Style>
<Style 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>
</TextBox.Style>
</TextBox>
<ToggleButton Grid.Column="1" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}">
<ToggleButton.Style>
<Style 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="Background" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Themes:ButtonChrome x:Name="Chrome" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" RenderMouseOver="{TemplateBinding IsMouseOver}" RenderPressed="{TemplateBinding IsPressed}" RoundCorners="False" SnapsToDevicePixels="True" Width="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}">
<Path x:Name="Arrow" Data="M0,0L3.5,4 7,0z" Fill="Black" HorizontalAlignment="Center" Margin="0,1,0,0" VerticalAlignment="Center"/>
</Themes:ButtonChrome>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="RenderPressed" TargetName="Chrome" Value="True"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Fill" TargetName="Arrow" Value="#FFAFAFAF"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ToggleButton.Style>
</ToggleButton>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsKeyboardFocusWithin" Value="True">
<Setter Property="Foreground" Value="Black"/>
</Trigger>
<Trigger Property="IsDropDownOpen" Value="True">
<Setter Property="RenderFocused" TargetName="Border" Value="True"/>
</Trigger>
<Trigger Property="HasItems" Value="False">
<Setter Property="Height" TargetName="DropDownBorder" Value="95"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
<Setter Property="Background" Value="#FFF4F4F4"/>
</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="HasDropShadow" SourceName="PART_Popup" Value="True">
<Setter Property="Margin" TargetName="Shdw" Value="0,0,5,5"/>
<Setter Property="Color" TargetName="Shdw" Value="#71000000"/>
</Trigger>
<Trigger Property="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="ComboBoxItem.ItemsviewSelected.Background" Color="#005f7e"/>
<SolidColorBrush x:Key="ComboBoxItem.ItemsviewSelected.Border" Color="#005f7e"/>
<SolidColorBrush x:Key="ComboBoxItem.ItemsviewSelectedHover.Background" Color="#005f7e"/>
<SolidColorBrush x:Key="ComboBoxItem.ItemsviewSelectedHover.Border" Color="#005f7e"/>
<SolidColorBrush x:Key="ComboBoxItem.ItemsviewSelectedNoFocus.Background" Color="#005f7e"/>
<SolidColorBrush x:Key="ComboBoxItem.ItemsviewSelectedNoFocus.Border" Color="#005f7e"/>
<Style x:Key="ComboBoxItemStyle" TargetType="{x:Type ComboBoxItem}">
<Setter Property="Background" Value="{StaticResource BrushICBlue}" />
<Setter Property="BorderBrush" Value="{StaticResource BrushICBlue}" />
</Style>
可悲的是，沒有解決對我來說。在插入的圖像中，問題在於組合框已被點擊並且列表中有兩個項目。最上面的項目是當前項目，看起來是空白的，但它顯示的是非常淺灰色背景上的白色數字。我需要該列表項的背景變暗。 – Dar
也許你可以提供一個可重現的問題樣本？閱讀並相應地編輯您的問題：http://stackoverflow.com/help/mcve。您引用了一些未包含的畫筆，並且您發佈的示例ComboBox中沒有任何項目。 – mm8
我似乎很難描述我的問題。問題不在於組合框的文本框部分，而在於列表項。列表中有兩個項目。這兩個項目包含數字18015551777和14004441444，第一個項目是當前選擇的項目，因此該項目的內容 - 18015551777 - 顯示在組合框的文本框部分。但是，正如您所看到的，您無法讀取項目列表中的第一個項目，因爲背景對於白色前景太淺。第二個列表項顯示得很好，因爲它使用指定的背景顏色。 – Dar