I am new to XAML and UWP, I have a ComboBox in which I am using mentioned styles, Background color of selected item in list of all items is SkyBlue, I want to change it to Red or any other color,Can someone help me on how to do it? Thanks in advance..
<Style x:Key="ComboBoxTextBoxStyle" TargetType="TextBox">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TextBox">
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="Disabled">
<VisualState.Setters>
<Setter Target="BorderElement.Background" Value="{ThemeResource TextControlBackgroundDisabled}"/>
<Setter Target="BorderElement.BorderBrush" Value="{ThemeResource TextControlBorderBrushDisabled}"/>
<Setter Target="ContentElement.Foreground" Value="{ThemeResource TextControlForegroundDisabled}"/>
<Setter Target="PlaceholderTextContentPresenter.Foreground" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource TextControlPlaceholderForegroundDisabled}}"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="PointerOver">
<VisualState.Setters>
<Setter Target="BorderElement.Background" Value="{ThemeResource TextControlBackgroundPointerOver}"/>
<Setter Target="BorderElement.BorderBrush" Value="{ThemeResource TextControlBorderBrushPointerOver}"/>
<Setter Target="ContentElement.Foreground" Value="{ThemeResource TextControlForegroundPointerOver}"/>
<Setter Target="PlaceholderTextContentPresenter.Foreground" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource TextControlPlaceholderForegroundPointerOver}}"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="Focused">
<VisualState.Setters>
<Setter Target="BorderElement.Background" Value="{ThemeResource TextControlBackgroundFocused}"/>
<Setter Target="BorderElement.BorderBrush" Value="{ThemeResource TextControlBorderBrushFocused}"/>
<Setter Target="ContentElement.Foreground" Value="{ThemeResource TextControlForegroundFocused}"/>
<Setter Target="ContentElement.RequestedTheme" Value="Light"/>
<Setter Target="PlaceholderTextContentPresenter.Foreground" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource TextControlPlaceholderForegroundFocused}}"/>
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="BorderElement" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Control.IsTemplateFocusTarget="True"/>
<ScrollViewer x:Name="ContentElement" AutomationProperties.AccessibilityView="Raw" HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}" HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}" IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}" IsTabStop="False" IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}" IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}" VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}" ZoomMode="Disabled"/>
<TextBlock x:Name="PlaceholderTextContentPresenter" Foreground="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource TextControlPlaceholderForeground}}" IsHitTestVisible="False" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" TextAlignment="{TemplateBinding TextAlignment}" TextWrapping="{TemplateBinding TextWrapping}" Text="{TemplateBinding PlaceholderText}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ComboBoxStyle1" TargetType="ComboBox">
<Setter Property="Padding" Value="12,5,0,7"/>
<Setter Property="MaxDropDownHeight" Value="504"/>
<Setter Property="Foreground" Value="{ThemeResource ComboBoxForeground}"/>
<Setter Property="Background" Value="{ThemeResource ComboBoxBackground}"/>
<Setter Property="BorderBrush" Value="{ThemeResource ComboBoxBorderBrush}"/>
<Setter Property="BorderThickness" Value="{ThemeResource ComboBoxBorderThemeThickness}"/>
<Setter Property="TabNavigation" Value="Once"/>
<Setter Property="TextBoxStyle" Value="{StaticResource ComboBoxTextBoxStyle}"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.HorizontalScrollMode" Value="Disabled"/>
<Setter Property="ScrollViewer.VerticalScrollMode" Value="Auto"/>
<Setter Property="ScrollViewer.IsVerticalRailEnabled" Value="True"/>
<Setter Property="ScrollViewer.IsDeferredScrollingEnabled" Value="False"/>
<Setter Property="ScrollViewer.BringIntoViewOnFocusChange" Value="True"/>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Top"/>
<Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}"/>
<Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}"/>
<Setter Property="UseSystemFocusVisuals" Value="{ThemeResource IsApplicationFocusVisualKindReveal}"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<CarouselPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid x:Name="LayoutRoot">
<Grid.Resources>
<Storyboard x:Key="OverlayOpeningAnimation">
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity">
<DiscreteDoubleKeyFrame KeyTime="0:0:0" Value="0.0"/>
<SplineDoubleKeyFrame KeyTime="0:0:0.383" KeySpline="0.1,0.9 0.2,1.0" Value="1.0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="OverlayClosingAnimation">
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity">
<DiscreteDoubleKeyFrame KeyTime="0:0:0" Value="1.0"/>
<SplineDoubleKeyFrame KeyTime="0:0:0.216" KeySpline="0.1,0.9 0.2,1.0" Value="0.0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</Grid.Resources>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="32"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="PointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxBackgroundPointerOver}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxBorderBrushPointerOver}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxBackgroundPressed}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxBorderBrushPressed}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxBackgroundDisabled}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxBorderBrushDisabled}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HeaderContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxForegroundDisabled}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxForegroundDisabled}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="PlaceholderTextBlock" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource ComboBoxForegroundDisabled}}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="DropDownGlyph" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxDropDownGlyphForegroundDisabled}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<DoubleAnimation Duration="0" Storyboard.TargetName="HighlightBackground" To="1" Storyboard.TargetProperty="Opacity"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HighlightBackground" Storyboard.TargetProperty="BorderBrush">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxBackgroundBorderBrushFocused}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxForegroundFocused}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="PlaceholderTextBlock" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource ComboBoxForegroundFocused}}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="DropDownGlyph" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxDropDownGlyphForegroundFocused}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="FocusedPressed">
<Storyboard>
<DoubleAnimation Duration="0" Storyboard.TargetName="HighlightBackground" To="1" Storyboard.TargetProperty="Opacity"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxForegroundFocusedPressed}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="PlaceholderTextBlock" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource ComboBoxPlaceHolderForegroundFocusedPressed}}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="DropDownGlyph" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ComboBoxDropDownGlyphForegroundFocusedPressed}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused"/>
<VisualState x:Name="PointerFocused"/>
<VisualState x:Name="FocusedDropDown">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetName="PopupBorder" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="DropDownStates">
<VisualState x:Name="Opened">
<Storyboard>
<SplitOpenThemeAnimation ClosedTargetName="ContentPresenter" OffsetFromCenter="{Binding TemplateSettings.DropDownOffset, RelativeSource={RelativeSource Mode=TemplatedParent}}" OpenedLength="{Binding TemplateSettings.DropDownOpenedHeight, RelativeSource={RelativeSource Mode=TemplatedParent}}" OpenedTargetName="PopupBorder"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Closed">
<Storyboard>
<SplitCloseThemeAnimation ClosedTargetName="ContentPresenter" OffsetFromCenter="{Binding TemplateSettings.DropDownOffset, RelativeSource={RelativeSource Mode=TemplatedParent}}" OpenedLength="{Binding TemplateSettings.DropDownOpenedHeight, RelativeSource={RelativeSource Mode=TemplatedParent}}" OpenedTargetName="PopupBorder"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="EditableModeStates">
<VisualState x:Name="TextBoxFocused">
<VisualState.Setters>
<!--<Setter Target="DropDownGlyph.Foreground" Value="{ThemeResource ComboBoxEditableDropDownGlyphForeground}"/>-->
<Setter Target="DropDownOverlay.Margin" Value="0,3,2,2"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="TextBoxFocusedOverlayPointerOver">
<VisualState.Setters>
<!--<Setter Target="DropDownGlyph.Foreground" Value="{ThemeResource ComboBoxEditableDropDownGlyphForeground}"/>-->
<Setter Target="DropDownOverlay.Background" Value="{ThemeResource ComboBoxFocusedDropDownBackgroundPointerOver}"/>
<Setter Target="DropDownOverlay.Margin" Value="0,3,2,2"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="TextBoxFocusedOverlayPressed">
<VisualState.Setters>
<!--<Setter Target="DropDownGlyph.Foreground" Value="{ThemeResource ComboBoxEditableDropDownGlyphForeground}"/>-->
<Setter Target="DropDownOverlay.Background" Value="{ThemeResource ComboBoxFocusedDropDownBackgroundPointerPressed}"/>
<Setter Target="DropDownOverlay.Margin" Value="0,3,2,2"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="TextBoxOverlayPointerOver">
<VisualState.Setters>
<Setter Target="DropDownOverlay.Background" Value="{ThemeResource ComboBoxDropDownBackgroundPointerOver}"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="TextBoxOverlayPressed">
<VisualState.Setters>
<Setter Target="DropDownOverlay.Background" Value="{ThemeResource ComboBoxDropDownBackgroundPointerPressed}"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="TextBoxUnfocused"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter x:Name="HeaderContentPresenter" ContentTemplate="{TemplateBinding HeaderTemplate}" Grid.Column="0" Content="{TemplateBinding Header}" Grid.ColumnSpan="2" FlowDirection="{TemplateBinding FlowDirection}" FontWeight="{ThemeResource ComboBoxHeaderThemeFontWeight}" Margin="{ThemeResource ComboBoxTopHeaderMargin}" Grid.Row="0" TextWrapping="Wrap" VerticalAlignment="Top" Visibility="Collapsed" x:DeferLoadStrategy="Lazy"/>
<Border x:Name="Background" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="{TemplateBinding CornerRadius}" Grid.Column="0" Grid.ColumnSpan="2" Control.IsTemplateFocusTarget="True" MinWidth="{ThemeResource ComboBoxThemeMinWidth}" Grid.Row="1"/>
<Border x:Name="HighlightBackground" Background="{ThemeResource ComboBoxBackgroundUnfocused}" BorderBrush="{ThemeResource ComboBoxBackgroundBorderBrushUnfocused}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="{TemplateBinding CornerRadius}" Grid.Column="0" Grid.ColumnSpan="2" Opacity="0" Grid.Row="1"/>
<ContentPresenter x:Name="ContentPresenter" Grid.Column="0" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" Grid.Row="1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<TextBlock x:Name="PlaceholderTextBlock" Foreground="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource ComboBoxPlaceHolderForeground}}" Text="{TemplateBinding PlaceholderText}"/>
</ContentPresenter>
<TextBox x:Name="EditableText" BorderBrush="Transparent" Grid.Column="0" Grid.ColumnSpan="2" Foreground="{Binding PlaceholderForeground, RelativeSource={RelativeSource Mode=TemplatedParent}, TargetNullValue={ThemeResource ComboBoxPlaceHolderForeground}}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Header="{TemplateBinding Header}" Margin="0,0,0,0" AutomationProperties.Name="{TemplateBinding AutomationProperties.Name}" Padding="10,3,30,5" PlaceholderText="{TemplateBinding PlaceholderText}" Grid.Row="1" Style="{StaticResource ComboBoxTextBoxStyle}" Text="{Binding Text, Mode=TwoWay, RelativeSource={RelativeSource Mode=TemplatedParent}, UpdateSourceTrigger=PropertyChanged}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Visibility="Collapsed" x:Load="False"/>
<Border x:Name="DropDownOverlay" Background="Transparent" Grid.Column="1" HorizontalAlignment="Right" Margin="0,2,2,2" Grid.Row="1" Visibility="Collapsed" Width="30" x:Load="False"/>
<!--<FontIcon x:Name="DropDownGlyph" AutomationProperties.AccessibilityView="Raw" Grid.Column="1" Foreground="{ThemeResource ComboBoxDropDownGlyphForeground}" FontFamily="{ThemeResource SymbolThemeFontFamily}" FontSize="12" Glyph="" HorizontalAlignment="Right" IsHitTestVisible="False" Margin="0,10,10,10" Grid.Row="1" VerticalAlignment="Center"/>-->
<Path HorizontalAlignment="Right" IsHitTestVisible="False" Margin="0,10,10,10" Grid.Column="1" Grid.Row="1" VerticalAlignment="Center" Data="M 8 0 L 16 16 0 16 Z"
StrokeThickness="5"
StrokeLineJoin="Round"
Stroke="#FF1A428A"
Fill="#FF1A428A" />
<ContentPresenter x:Name="DescriptionPresenter" Grid.Column="0" Content="{TemplateBinding Description}" Grid.ColumnSpan="2" Foreground="{ThemeResource SystemControlDescriptionTextForegroundBrush}" Grid.Row="2" x:Load="False"/>
<Popup x:Name="Popup">
<Border x:Name="PopupBorder" CornerRadius="20" Background="White" BackgroundSizing="OuterBorderEdge" BorderBrush="#FF1A428A" BorderThickness="2" HorizontalAlignment="Stretch" Margin="0,-1,0,-1" Padding="{ThemeResource ComboBoxDropdownBorderPadding}">
<ScrollViewer x:Name="ScrollViewer" AutomationProperties.AccessibilityView="Raw" BringIntoViewOnFocusChange="{TemplateBinding ScrollViewer.BringIntoViewOnFocusChange}" Foreground="{ThemeResource ComboBoxDropDownForeground}" HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}" HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}" IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}" IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}" IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}" MinWidth="{Binding TemplateSettings.DropDownContentMinWidth, RelativeSource={RelativeSource Mode=TemplatedParent}}" VerticalSnapPointsAlignment="Near" VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}" VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}" VerticalSnapPointsType="OptionalSingle" ZoomMode="Disabled">
<ItemsPresenter Margin="{ThemeResource ComboBoxDropdownContentMargin}">
</ItemsPresenter>
</ScrollViewer>
</Border>
</Popup>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I have tries some to do some changes in style but I don't have much idea how to do it. If possible I dont want to use Triggers if it can be done with changes in style.
If you wants to change the background color for the selected item, you need to change the style of the ComboBoxItem. Then assign the customized style to the ItemContainerStyle property of the ComboBox control.
Here is the style that you could directly use. Please find the Background brush in Selected VisualState. In the following code, I've changed it into Red. You could change it to other color that you want.
<Style TargetType="ComboBoxItem" x:Key="MyItemStyle">
<Setter Property="Foreground" Value="{ThemeResource ComboBoxItemForeground}" />
<Setter Property="Background" Value="{ThemeResource ComboBoxItemRevealBackground}" />
<Setter Property="BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrush}" />
<Setter Property="BorderThickness" Value="{ThemeResource ComboBoxItemRevealBorderThemeThickness}" />
<Setter Property="TabNavigation" Value="Local" />
<Setter Property="Padding" Value="{ThemeResource ComboBoxItemRevealThemePadding}" />
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
<Setter Property="UseSystemFocusVisuals" Value="{StaticResource UseSystemFocusVisuals}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBoxItem">
<Grid x:Name="LayoutRoot" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="{TemplateBinding CornerRadius}" Control.IsTemplateFocusTarget="True">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal">
<Storyboard>
<PointerUpThemeAnimation Storyboard.TargetName="LayoutRoot" />
</Storyboard>
</VisualState>
<VisualState x:Name="PointerOver">
<VisualState.Setters>
<Setter Target="LayoutRoot.(RevealBrush.State)" Value="PointerOver" />
<Setter Target="LayoutRoot.Background" Value="{ThemeResource ComboBoxItemRevealBackgroundPointerOver}" />
<Setter Target="LayoutRoot.BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrushPointerOver}" />
<Setter Target="ContentPresenter.Foreground" Value="{ThemeResource ComboBoxItemForegroundPointerOver}" />
</VisualState.Setters>
<Storyboard>
<PointerUpThemeAnimation Storyboard.TargetName="LayoutRoot" />
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<VisualState.Setters>
<Setter Target="LayoutRoot.Background" Value="{ThemeResource ComboBoxItemRevealBackgroundDisabled}" />
<Setter Target="LayoutRoot.BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrushDisabled}" />
<Setter Target="ContentPresenter.Foreground" Value="{ThemeResource ComboBoxItemForegroundDisabled}" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="Pressed">
<VisualState.Setters>
<Setter Target="LayoutRoot.Background" Value="{ThemeResource ComboBoxItemRevealBackgroundPressed}" />
<Setter Target="LayoutRoot.BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrushPressed}" />
<Setter Target="ContentPresenter.Foreground" Value="{ThemeResource ComboBoxItemForegroundPressed}" />
<Setter Target="LayoutRoot.(RevealBrush.State)" Value="Pressed" />
</VisualState.Setters>
<Storyboard>
<PointerDownThemeAnimation Storyboard.TargetName="LayoutRoot" />
</Storyboard>
</VisualState>
<VisualState x:Name="Selected">
<VisualState.Setters>
<Setter Target="LayoutRoot.Background" Value="Red" />
<Setter Target="LayoutRoot.BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrushSelected}" />
<Setter Target="ContentPresenter.Foreground" Value="{ThemeResource ComboBoxItemForegroundSelected}" />
</VisualState.Setters>
<Storyboard>
<PointerUpThemeAnimation Storyboard.TargetName="LayoutRoot" />
</Storyboard>
</VisualState>
<VisualState x:Name="SelectedUnfocused">
<VisualState.Setters>
<Setter Target="LayoutRoot.Background" Value="{ThemeResource ComboBoxItemRevealBackgroundSelectedUnfocused}" />
<Setter Target="LayoutRoot.BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrushSelectedUnfocused}" />
<Setter Target="ContentPresenter.Foreground" Value="{ThemeResource ComboBoxItemForegroundSelectedUnfocused}" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="SelectedDisabled">
<VisualState.Setters>
<Setter Target="LayoutRoot.Background" Value="{ThemeResource ComboBoxItemRevealBackgroundSelectedDisabled}" />
<Setter Target="LayoutRoot.BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrushSelectedDisabled}" />
<Setter Target="ContentPresenter.Foreground" Value="{ThemeResource ComboBoxItemForegroundSelectedDisabled}" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="SelectedPointerOver">
<VisualState.Setters>
<Setter Target="LayoutRoot.Background" Value="{ThemeResource ComboBoxItemRevealBackgroundSelectedPointerOver}" />
<Setter Target="LayoutRoot.BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrushSelectedPointerOver}" />
<Setter Target="ContentPresenter.Foreground" Value="{ThemeResource ComboBoxItemForegroundSelectedPointerOver}" />
<Setter Target="LayoutRoot.(RevealBrush.State)" Value="PointerOver" />
</VisualState.Setters>
<Storyboard>
<PointerUpThemeAnimation Storyboard.TargetName="LayoutRoot" />
</Storyboard>
</VisualState>
<VisualState x:Name="SelectedPressed">
<VisualState.Setters>
<Setter Target="LayoutRoot.Background" Value="{ThemeResource ComboBoxItemRevealBackgroundSelectedPressed}" />
<Setter Target="LayoutRoot.BorderBrush" Value="{ThemeResource ComboBoxItemRevealBorderBrushSelectedPressed}" />
<Setter Target="ContentPresenter.Foreground" Value="{ThemeResource ComboBoxItemForegroundSelectedPressed}" />
<Setter Target="LayoutRoot.(RevealBrush.State)" Value="Pressed" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="InputModeStates">
<VisualState x:Name="InputModeDefault" />
<VisualState x:Name="TouchInputMode">
<VisualState.Setters>
<Setter Target="ContentPresenter.Margin" Value="{ThemeResource ComboBoxItemRevealThemeTouchPadding}" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="GameControllerInputMode">
<VisualState.Setters>
<Setter Target="ContentPresenter.Margin" Value="{ThemeResource ComboBoxItemRevealThemeGameControllerPadding}" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter x:Name="ContentPresenter"
Content="{TemplateBinding Content}"
ContentTransitions="{TemplateBinding ContentTransitions}"
ContentTemplate="{TemplateBinding ContentTemplate}"
Foreground="{TemplateBinding Foreground}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
Margin="{TemplateBinding Padding}" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Then you need to assign the style to the ComboBox
<ComboBox x:Name="FontsCombo"
Style="{StaticResource ComboBoxStyle1}"
ItemContainerStyle="{StaticResource MyItemStyle}"
Header="Fonts" Height="88" Width="296"
ItemsSource="{x:Bind fonts}" />