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[Solved] Expander ad item of a listbox

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Expander

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Adrien asked on 27 Feb 2013, 02:07 PM

Hello Guys

I need your help since I get the following message in my Silverlight application:

-----------------------------------------

{System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentException: Value does not fall within the expected range.

à MS.Internal.XcpImports.CheckHResult(UInt32 hr)

à MS.Internal.XcpImports.SetValue(IManagedPeerBase obj, DependencyProperty property, DependencyObject doh)

à MS.Internal.XcpImports.SetValue(IManagedPeerBase doh, DependencyProperty property, Object obj)

à System.Windows.DependencyObject.SetObjectValueToCore(DependencyProperty dp, Object value)

à System.Windows.DependencyObject.SetEffectiveValue(DependencyProperty property, EffectiveValueEntry& newEntry, Object newValue)

à System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)

à System.Windows.DependencyObject.RefreshExpression(DependencyProperty dp)

à System.Windows.Data.BindingExpression.SendDataToTarget()

à System.Windows.Data.BindingExpression.SourceAcquired()

à System.Windows.Data.Debugging.BindingBreakPoint.<>c__DisplayClass4.<BreakOnSharedType>b__3()

--- Fin de la trace de la pile d'exception interne ---

à System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

à System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)

à System.Delegate.DynamicInvokeImpl(Object[] args)

à System.Delegate.DynamicInvoke(Object[] args)

à StylesBudgetxaml.BindingOperation(Object BindingState, Int32 , Action )}

----------------------------------------------------------------

I’m using a listbox where I’ve changed the items into Telerik RadExpanders.

<ListBox ItemsSource="{Binding FaqItems, ElementName=Root}" ItemTemplate="{StaticResource FAQListBoxItems}" ItemContainerStyle="{StaticResource FAQListBoxItemStyle}" Width="650" ScrollViewer.HorizontalScrollBarVisibility="Disabled"/>

<SolidColorBrush x:Key="Expander_Background" Color="#00FFFFFF"/>

<SolidColorBrush x:Key="Expander_BorderBrush" Color="#00FFFFFF"/>

<Thickness x:Key="Expander_BorderThickness">0</Thickness>

<SolidColorBrush x:Key="ControlInnerBorder_Normal" Color="#FFFFFFFF"/>

<SolidColorBrush x:Key="ControlElement_Normal" Color="#FF000000"/>

<SolidColorBrush x:Key="ControlOuterBorder_Focused" Color="#FFFFC92B"/>

<ControlTemplate x:Key="ToggleTemplate" TargetType="telerik:RadToggleButton">

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="FocusStates">

<VisualStateGroup.Transitions>

<VisualTransition GeneratedDuration="0:0:0.2" To="Focused"/>

<VisualTransition GeneratedDuration="0:0:0.2" To="Unfocused"/>

</VisualStateGroup.Transitions>

<VisualState x:Name="Unfocused"/>

<VisualState x:Name="Focused">

<Storyboard>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="FocusDecorator">

<DiscreteObjectKeyFrame KeyTime="0:0:0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<ContentPresenter x:Name="Content" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

<Rectangle x:Name="FocusDecorator" IsHitTestVisible="false" Stroke="{StaticResource ControlOuterBorder_Focused}" StrokeThickness="1" StrokeDashArray="1 2" Visibility="Collapsed"/>

</Grid>

</ControlTemplate>

<CornerRadius x:Key="Expander_BorderRadius">3</CornerRadius>

<SolidColorBrush x:Key="ControlOuterBorder_Disabled" Color="#FF989898"/>

<SolidColorBrush x:Key="ControlInnerBorder_Disabled" Color="Transparent"/>

<SolidColorBrush x:Key="ControlBackground_Disabled" Color="#FFE0E0E0"/>

<SolidColorBrush x:Key="ControlElement_Disabled" Color="#FF8D8D8D"/>

<SolidColorBrush x:Key="ControlOuterBorder_MouseOver" Color="#FFFFC92B"/>

<SolidColorBrush x:Key="ControlInnerBorder_MouseOver" Color="#FFFFFFFF"/>

<LinearGradientBrush x:Key="ControlBackground_MouseOver" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFFFBDA" Offset="0"/>

<GradientStop Color="#FFFEEBAE" Offset="0.50"/>

<GradientStop Color="#FFFFD25A" Offset="0.50"/>

<GradientStop Color="#FFFFFBA3" Offset="1"/>

</LinearGradientBrush>

<SolidColorBrush x:Key="ControlElement_MouseOver" Color="#FF000000"/>

<LinearGradientBrush x:Key="ControlOuterBorder_Pressed" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FF282828"/>

<GradientStop Color="#FF5F5F5F" Offset="1"/>

</LinearGradientBrush>

<LinearGradientBrush x:Key="ControlInnerBorder_Pressed" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFB69A78"/>

<GradientStop Color="#FFFFE17A" Offset="0.126"/>

</LinearGradientBrush>

<LinearGradientBrush x:Key="ControlBackground_Pressed" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFFDCAB" Offset="0"/>

<GradientStop Color="#FFFFD18F" Offset="0.5"/>

<GradientStop Color="#FFFE9227" Offset="0.5"/>

<GradientStop Color="#FFFFBA74" Offset="0"/>

</LinearGradientBrush>

<SolidColorBrush x:Key="ControlElement_Pressed" Color="#FF000000"/>

<ControlTemplate x:Key="FAQRadToggleButtonControlTemplate" TargetType="telerik:RadToggleButton">

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="FocusStates">

<VisualStateGroup.Transitions>

<VisualTransition GeneratedDuration="0:0:0.2" To="Focused"/>

<VisualTransition GeneratedDuration="0:0:0.2" To="Unfocused"/>

</VisualStateGroup.Transitions>

<VisualState x:Name="Unfocused"/>

<VisualState x:Name="Focused"/>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

</Grid>

</ControlTemplate>

<ControlTemplate x:Key="ExpanderTemplate" TargetType="telerik:RadExpander">

<Grid HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}">

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="CommonStateGroup">

<VisualState x:Name="Normal"/>

<VisualState x:Name="Disabled">

<Storyboard>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Stroke" Storyboard.TargetName="OuterCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlOuterBorder_Disabled}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Stroke" Storyboard.TargetName="InnerCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlInnerBorder_Disabled}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="OuterCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlBackground_Disabled}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="arrow">

<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource ControlElement_Disabled}"/>

</ObjectAnimationUsingKeyFrames>

<DoubleAnimation To=".5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Content"/>

<DoubleAnimation To=".5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="HeaderContent"/>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="HeaderStateGroup">

<VisualState x:Name="NormalHeader"/>

<VisualState x:Name="MouseOverHeader">

<Storyboard>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Stroke" Storyboard.TargetName="OuterCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlOuterBorder_MouseOver}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Stroke" Storyboard.TargetName="InnerCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlInnerBorder_MouseOver}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="OuterCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlBackground_MouseOver}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="arrow">

<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource ControlElement_MouseOver}"/>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="PressedHeader">

<Storyboard>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Stroke" Storyboard.TargetName="OuterCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlOuterBorder_Pressed}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Stroke" Storyboard.TargetName="InnerCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlInnerBorder_Pressed}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0:0:0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="OuterCircle">

<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource ControlBackground_Pressed}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Fill" Storyboard.TargetName="arrow">

<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource ControlElement_Pressed}"/>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="HeaderOrientationGroup">

<VisualState x:Name="HorizontalOrientation">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="LayoutTransform" Storyboard.TargetName="HeaderContentTransform">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<RotateTransform Angle="0"/>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Column)" Storyboard.TargetName="HeaderContentTransform">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>1</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="VerticalOrientation">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="LayoutTransform" Storyboard.TargetName="HeaderContentTransform">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<RotateTransform Angle="90"/>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="HeaderContentTransform">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>1</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="ExpandStateGroup">

<VisualState x:Name="Expanded">

<Storyboard>

<DoubleAnimation Duration="0:0:0.2" To="180" Storyboard.TargetProperty="(FrameworkElement.RenderTransform).Angle" Storyboard.TargetName="arrow"/>

</Storyboard>

</VisualState>

<VisualState x:Name="Collapsed">

<Storyboard>

<DoubleAnimation Duration="0:0:0.2" To="0" Storyboard.TargetProperty="(FrameworkElement.RenderTransform).Angle" Storyboard.TargetName="arrow"/>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="ExpandDirectionStates">

<VisualStateGroup.Transitions>

<VisualTransition>

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="Content">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>0</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Column)" Storyboard.TargetName="Content">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>0</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="HeaderButton">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>0</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Column)" Storyboard.TargetName="HeaderButton">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>0</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="col0">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>Auto</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="col1">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>Auto</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Height" Storyboard.TargetName="row0">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>Auto</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Height" Storyboard.TargetName="row1">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>Auto</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualTransition>

</VisualStateGroup.Transitions>

<VisualState x:Name="DirectionLeft">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="col0">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>*</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Height" Storyboard.TargetName="row0">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>*</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Column)" Storyboard.TargetName="HeaderButton">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>1</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<DoubleAnimation Duration="0:0:0" To="90" Storyboard.TargetProperty="(FrameworkElement.RenderTransform).Angle" Storyboard.TargetName="arrowPanel"/>

</Storyboard>

</VisualState>

<VisualState x:Name="DirectionRight">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="col1">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>*</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Height" Storyboard.TargetName="row0">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>*</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Column)" Storyboard.TargetName="Content">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>1</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<DoubleAnimation Duration="0:0:0" To="-90" Storyboard.TargetProperty="(FrameworkElement.RenderTransform).Angle" Storyboard.TargetName="arrowPanel"/>

</Storyboard>

</VisualState>

<VisualState x:Name="DirectionUp">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="col0">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>*</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Height" Storyboard.TargetName="row0">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>*</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="HeaderButton">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>1</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<DoubleAnimation Duration="0:0:0" To="180" Storyboard.TargetProperty="(FrameworkElement.RenderTransform).Angle" Storyboard.TargetName="arrowPanel"/>

</Storyboard>

</VisualState>

<VisualState x:Name="DirectionDown">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Width" Storyboard.TargetName="col0">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>*</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Height" Storyboard.TargetName="row1">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<GridLength>*</GridLength>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Grid.Row)" Storyboard.TargetName="Content">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<system:Int32>1</system:Int32>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="{StaticResource Expander_BorderRadius}">

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition x:Name="col0" Width="Auto"/>

<ColumnDefinition x:Name="col1" Width="Auto"/>

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

<RowDefinition x:Name="row0" Height="Auto"/>

<RowDefinition x:Name="row1" Height="Auto"/>

</Grid.RowDefinitions>

<telerik:RadToggleButton x:Name="HeaderButton" Background="Transparent" ClickMode="{TemplateBinding ClickMode}" Foreground="{TemplateBinding Foreground}" FontWeight="{TemplateBinding FontWeight}" FontStyle="{TemplateBinding FontStyle}" FontStretch="{TemplateBinding FontStretch}" FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" HorizontalAlignment="{TemplateBinding HorizontalHeaderAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalHeaderAlignment}" IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" TabIndex="{TemplateBinding TabIndex}" Template="{StaticResource FAQRadToggleButtonControlTemplate}" VerticalAlignment="{TemplateBinding VerticalHeaderAlignment}" VerticalContentAlignment="{TemplateBinding VerticalHeaderAlignment}">

<Grid x:Name="HeaderPanel" Background="Transparent">

<Grid.ColumnDefinitions>

<ColumnDefinition Width="Auto"/>

<ColumnDefinition Width="*"/>

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<Grid Grid.Column="0" Grid.Row="0">

<Ellipse x:Name="OuterCircle" Fill="{StaticResource ControlBackground_Normal}" HorizontalAlignment="Center" Height="20" Stroke="{StaticResource ControlOuterBorder_Normal}" VerticalAlignment="Center" Width="20"/>

<Ellipse x:Name="InnerCircle" HorizontalAlignment="Center" Height="18" Stroke="{StaticResource ControlInnerBorder_Normal}" VerticalAlignment="Center" Width="18"/>

<Grid x:Name="arrowPanel" RenderTransformOrigin=".5 .5">

<Grid.RenderTransform>

<RotateTransform/>

</Grid.RenderTransform>

<Path x:Name="arrow" Data="M0,0 L0.67,0 4,2.67 7.25,0 8,0 8,0.67 4,4 0,0.75 z" Fill="{StaticResource ControlElement_Normal}" Height="4" RenderTransformOrigin="0.5,0.5" Stretch="None" Width="8">

<Path.RenderTransform>

<RotateTransform Angle="0"/>

</Path.RenderTransform>

</Path>

</Grid>

<telerik:LayoutTransformControl x:Name="HeaderContentTransform" Grid.Column="0" Grid.Row="0" RenderTransformOrigin=".5 .5">

<ContentPresenter x:Name="HeaderContent" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Grid.Column="1" HorizontalAlignment="Stretch" Margin="5 0" VerticalAlignment="Stretch"/>

</telerik:LayoutTransformControl>

</Grid>

</telerik:RadToggleButton>

<ContentPresenter x:Name="Content" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="Collapsed" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

</Grid>

</Border>

</Grid>

</ControlTemplate>

<Style x:Key="FAQRadExpanderStyle" TargetType="telerik:RadExpander">

<Setter Property="IsTabStop" Value="false"/>

<Setter Property="HorizontalContentAlignment" Value="Stretch"/>

<Setter Property="VerticalContentAlignment" Value="Stretch"/>

<Setter Property="Background" Value="{StaticResource Expander_Background}"/>

<Setter Property="BorderBrush" Value="{StaticResource Expander_BorderBrush}"/>

<Setter Property="BorderThickness" Value="{StaticResource Expander_BorderThickness}"/>

<Setter Property="Padding" Value="2"/>

<Setter Property="Template" Value="{StaticResource ExpanderTemplate}"/>

<Setter Property="telerik:AnimationManager.AnimationSelector">

<Setter.Value>

<telerik:AnimationSelector>

<telerik:ExpanderExpandCollapseAnimation AnimationName="Expand" Direction="In" TargetElementName="Content"/>

<telerik:ExpanderExpandCollapseAnimation AnimationName="Collapse" Direction="Out" TargetElementName="Content"/>

</telerik:AnimationSelector>

</Setter.Value>

</Setter>

</Style>

<DataTemplate x:Key="FAQListBoxItems">

<toolkit:WrapPanel>

<telerik:RadExpander IsExpanded="False" VerticalContentAlignment="Top" telerik:AnimationManager.IsAnimationEnabled="{Binding ElementName=AnimationEnableCheckBox, Path=IsChecked}"

Style="{StaticResource FAQRadExpanderStyle}">

<telerik:RadExpander.Header>

<ContentPresenter Margin="5" Content="{Binding Title}"/>

</telerik:RadExpander.Header>

<telerik:RadExpander.Content>

<ContentPresenter Margin="5" Content="{Binding Answer}"/>

</telerik:RadExpander.Content>

</telerik:RadExpander>

</toolkit:WrapPanel>

</DataTemplate>

<Style x:Key="FAQListBoxItemStyle" TargetType="ListBoxItem">

<Setter Property="Padding" Value="3"/>

<Setter Property="HorizontalContentAlignment" Value="Left"/>

<Setter Property="VerticalContentAlignment" Value="Top"/>

<Setter Property="Background" Value="Transparent"/>

<Setter Property="BorderThickness" Value="1"/>

<Setter Property="TabNavigation" Value="Local"/>

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="ListBoxItem">

<Grid Background="{TemplateBinding Background}">

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="CommonStates">

<VisualState x:Name="Normal"/>

<VisualState x:Name="MouseOver">

<Storyboard>

<DoubleAnimation Duration="0" To=".35" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="fillColor"/>

</Storyboard>

</VisualState>

<VisualState x:Name="Disabled">

<Storyboard>

<DoubleAnimation Duration="0" To=".55" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="contentPresenter"/>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="SelectionStates">

<VisualState x:Name="Unselected"/>

<VisualState x:Name="Selected">

<Storyboard>

<DoubleAnimation Duration="0" To=".75" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="fillColor2"/>

<ColorAnimation Duration="0" To="{StaticResource TransparentDarkDarkColor}" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)" Storyboard.TargetName="fillColor2" d:IsOptimized="True"/>

</Storyboard>

</VisualState>

<VisualState x:Name="SelectedUnfocused"/>

</VisualStateGroup>

<VisualStateGroup x:Name="FocusStates">

<VisualState x:Name="Focused"/>

<VisualState x:Name="Unfocused"/>

</VisualStateGroup>

<VisualStateGroup x:Name="LayoutStates">

<VisualState x:Name="AfterLoaded"/>

<VisualState x:Name="BeforeLoaded"/>

<VisualState x:Name="BeforeUnloaded"/>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Rectangle x:Name="fillColor" Fill="#FFBADDE9" IsHitTestVisible="False" Opacity="0" RadiusY="1" RadiusX="1"/>

<Rectangle x:Name="fillColor2" Fill="#FFBADDE9" IsHitTestVisible="False" Opacity="0" RadiusY="1" RadiusX="1"/>

<ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}"/>

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

Do you know where it could come from?

Thanks in advance.

[Solved] Expander ad item of a listbox

1 Answer, 1 is accepted