Appearance and Styling in WPF Accordion (SfAccordion)
21 May 20216 minutes to read
Applying accent colors
SfAccordion supports accent colors to highlight the hot spots of the control. You can customize the accent colors using the AccentBrush property.
<syncfusion:SfAccordion x:Name="accordion" AccentBrush="Red" HorizontalAlignment="Center" VerticalAlignment="Center"/>accordion.AccentBrush = new SolidColorBrush() { Color = Windows.UI.Colors.Red };
Accordion header style
You can customize the appearance of SfAccordionItem header by setting the HeaderTemplate property of SfAccordion.
<syncfusion:SfAccordion HorizontalAlignment="Center" Height="250" VerticalAlignment="Center" Width="300">
<!-- For customizinng header -->
<syncfusion:SfAccordion.HeaderTemplate>
<DataTemplate>
<TextBlock Text="{Binding}" Foreground="Red" Opacity="1" FontFamily="Calibri" FontWeight="Bold" FontSize="20"/>
</DataTemplate>
</syncfusion:SfAccordion.HeaderTemplate>
<syncfusion:SfAccordionItem Header="WindowsForms"/>
<syncfusion:SfAccordionItem Header="WPF"/>
<syncfusion:SfAccordionItem Header="UWP"/>
<syncfusion:SfAccordionItem Header="WinRT"/>
</syncfusion:SfAccordion>
Accordion expander style
You can customize the appearance of expander button by writing style of AccordionButton, the edited style can be applied to accordion item by setting the AccordionButtonStyle property of SfAccordionItem.
<!-- AccordionButton Style -->
<Style TargetType="syncfusion:AccordionButton" x:Key="expanderButtonStyle">
<!-- Customization codes -->
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="ExpansionStates">
<VisualState x:Name="Collapsed">
<Storyboard>
<DoubleAnimation BeginTime="00:00:00" Duration="00:00:00.3" Storyboard.TargetName="icon" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)" To="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="Expanded">
<Storyboard>
<DoubleAnimation BeginTime="00:00:00" Duration="00:00:00.3" Storyboard.TargetName="icon" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)" To="90" />
<ColorAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="ExpandedBackground" Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00" Value="DeepPink" />
</ColorAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="ExpandedBackground" Storyboard.TargetProperty="(UIElement.Opacity)">
<SplineDoubleKeyFrame KeyTime="00:00:00" Value="0.5" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="background" Background="{Binding Background}" CornerRadius="1,1,1,1">
<Grid>
<Border Height="Auto" Margin="0,0,0,0" x:Name="ExpandedBackground" VerticalAlignment="Stretch" Opacity="0" Background="Red" BorderBrush="Yellow" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="1,1,1,1" />
<Grid Height="19" HorizontalAlignment="Center" x:Name="icon" VerticalAlignment="Center" Width="19" RenderTransformOrigin="0.5,0.5" Grid.Column="0" Grid.Row="0">
<Grid.RenderTransform>
<TransformGroup>
<ScaleTransform />
<SkewTransform />
<RotateTransform Angle="-90" />
<TranslateTransform />
</TransformGroup>
</Grid.RenderTransform>
<Path Height="Auto" HorizontalAlignment="Center" Margin="0,0,0,0" x:Name="arrow" VerticalAlignment="Center" Width="Auto" RenderTransformOrigin="0.5,0.5" Stroke="Red" StrokeThickness="1.5" Stretch="Uniform" Data="M16.365994,20.000013L32.000027,29.802015 30.936978,31.497023 16.368008,22.360976 1.0660061,32.000013 2.7179741E-05,30.308973z M16.366,10L32.000001,19.802 30.937001,21.497 16.368001,12.361001 1.0659999,22 0,20.309z M16.366,0L32.000001,9.802 30.937001,11.497001 16.368001,2.3610001 1.0659999,12 0,10.309z"/>
</Grid>
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" x:Name="header" Grid.Column="1" Grid.Row="0" Grid.RowSpan="1" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" />
</Grid>
</Border>
</Style>
<!--SfAccordion Control -->
<syncfusion:SfAccordion x:Name="accordion1" HorizontalAlignment="Right" VerticalAlignment="Center" Width="180">
<!-- Setting AccordionButtonStyle -->
<syncfusion:SfAccordion.ItemContainerStyle>
<Style TargetType="syncfusion:SfAccordionItem">
<Setter Property="AccordionButtonStyle" Value="{StaticResource expanderButtonStyle}"/>
</Style>
</syncfusion:SfAccordion.ItemContainerStyle>
</syncfusion:SfAccordion>
AccordionItem header height customization
You can customize the height of SfAccordionItem header by setting the HeaderTemplate property of SfAccordion.
<!-- For customizinng header -->
<syncfusion:SfAccordion.HeaderTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}" Height="50" FontSize="30" VerticalAlignment="Center"/>
</DataTemplate>
</syncfusion:SfAccordion.HeaderTemplate>
AccordionItem content height customization
You can customize the height of SfAccordionItem content by setting the ContentTemplate property of SfAccordion.
<!-- For customizinng SfAccordionItem content -->
<syncfusion:SfAccordion.ContentTemplate>
<DataTemplate>
<TextBlock Text="{Binding Description}" Height="60"/>
</DataTemplate>
</syncfusion:SfAccordion.ContentTemplate>
Enable or disable the animation behaviour
You can enable or disable the animation behaviour when its item is expanded or collapsed. It can be achieved by setting TargetSize and Percentage properties in ExpandableContentControl and writing the animation style in SfAccordionItem, the edited style can be applied by using the ItemContainerStyle property of the SfAccordion control.
<!-- SfAccordionItem Style -->
<Style x:Key="animationStyle" TargetType="syncfusion:SfAccordionItem">
<!-- Customization codes -->
<VisualStateManager.VisualStateGroups>
<!-- Animation Style -->
<VisualStateGroup x:Name="ExpansionStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0"/>
</VisualStateGroup.Transitions>
<!-- enable animation-->
<VisualState x:Name="Collapsed">
<Storyboard>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:01" Duration="00:00:10" Storyboard.TargetName="ExpandSite" Storyboard.TargetProperty="(layout:ExpandableContentControl.Percentage)">
<SplineDoubleKeyFrame KeySpline="0.2,0,0,1" KeyTime="00:00:10.0" Value="0" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Expanded">
<Storyboard>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:01" Duration="00:00:10" Storyboard.TargetName="ExpandSite" Storyboard.TargetProperty="(layout:ExpandableContentControl.Percentage)">
<SplineDoubleKeyFrame KeySpline="0.2,0,0,1" KeyTime="00:00:10.0" Value="1" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="Background" Padding="{TemplateBinding Padding}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="1,1,1,1">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<syncfusion:AccordionButton Name="ExpanderButton" Style="{TemplateBinding AccordionButtonStyle}" Content="{TemplateBinding Header}" ContentTemplate="{TemplateBinding HeaderTemplate}" IsChecked="{TemplateBinding IsSelected}" IsTabStop="True" Grid.Row="0" Padding="0,0,0,0" Margin="0,0,0,0" FontFamily="{TemplateBinding FontFamily}" FontSize="{TemplateBinding FontSize}" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="{TemplateBinding FontWeight}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}" Background="{TemplateBinding Background}" />
<syncfusion:ExpandableContentControl Name="ExpandSite" Grid.Row="1" IsTabStop="False" Percentage="0" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" Margin="0,0,0,0" Style="{StaticResource expandableContentStyle}" FontFamily="{TemplateBinding FontFamily}" FontSize="{TemplateBinding FontSize}" FontStretch="{TemplateBinding FontStretch}" FontStyle="{TemplateBinding FontStyle}" FontWeight="{TemplateBinding FontWeight}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}" />
</Grid>
</Border>
</Style>
<!--SfAccordion Control -->
<syncfusion:SfAccordion x:Name="accordion1" HorizontalAlignment="Center" VerticalAlignment="Center" ItemContainerStyle="{StaticResource animationStyle}" />