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Xamarin : Segmented Control for windows uwp

How can I make a custom renderer for Segmented Control in windows UWP. I followed this link to custom render the segmented control in IOS and android. But I couldn't find anything for windows UWP. Can anyone provide any resource in this or is there any alternate way of doing this similar to segmented control in windows UWP.

I found the Solution myself.
I recently found a nuget package FreshEssentials. It has the implementation of segmented button group. Follow this github link to find the implementation. It is easy to use.

There is a Xamarin Forms cross platform library now that does this.
Plugin Segmented Control for .NET Standard

I did it once with custom-styled RadioButtons. Edit the RadioButton style for your buttons - create checked and unchecked styles that are looking as you want and give them the same group so you can select only one button at the time.
Don't know if there is any easier way.
edit: sampe code, edit it the way you want:
<Page.Resources>
<Style x:Key="RadioButtonStyle1" TargetType="RadioButton">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Foreground" Value="{ThemeResource RadioButtonContentForegroundThemeBrush}"/>
<Setter Property="Padding" Value="0,0,0,0"/>
<Setter Property="HorizontalAlignment" Value="Center"/>
<Setter Property="VerticalAlignment" Value="Stretch"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}"/>
<Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="RadioButton">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="PointerOver">
</VisualState>
<VisualState x:Name="Pressed">
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="BackgroundRectangle">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource RadioButtonDisabledBackgroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentPresenter">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource RadioButtonContentDisabledForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="CheckStates">
<VisualState x:Name="Checked">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="BackgroundRectangle">
<DiscreteObjectKeyFrame KeyTime="0" Value="Blue"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentPresenter">
<DiscreteObjectKeyFrame KeyTime="0" Value="White"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unchecked">
</VisualState>
<VisualState x:Name="Indeterminate"/>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="FocusVisualWhite"/>
<DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="FocusVisualBlack"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused"/>
<VisualState x:Name="PointerFocused"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid HorizontalAlignment="Stretch">
<Grid x:Name="BackgroundRectangle" Background="Transparent">
<Border BorderThickness="1" BorderBrush="White" Margin="0" HorizontalAlignment="Stretch">
<Rectangle Margin="0" StrokeThickness="{ThemeResource RadioButtonBorderThemeThickness}" HorizontalAlignment="Stretch" UseLayoutRounding="False"/>
</Border>
<TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" x:Name="Title"></TextBlock>
</Grid>
<ContentPresenter x:Name="ContentPresenter" Foreground="White" AutomationProperties.AccessibilityView="Raw"
ContentTemplate="{TemplateBinding ContentTemplate}" ContentTransitions="{TemplateBinding ContentTransitions}"
Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Page.Resources>
<Grid Height="40" Background="Black" BorderThickness="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="10"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="10"/>
</Grid.ColumnDefinitions>
<RadioButton Height="30" Content="Button1" Grid.Column="1" Style="{StaticResource RadioButtonStyle1}" GroupName="MainGroup" Checked="Button1_OnChecked"></RadioButton>
<RadioButton Height="30" Content="Button2" Grid.Column="2" Style="{StaticResource RadioButtonStyle1}" GroupName="MainGroup" Checked="Button2_OnChecked"></RadioButton>
<RadioButton Height="30" Content="Button3" Grid.Column="3" Style="{StaticResource RadioButtonStyle1}" GroupName="MainGroup" Checked="Button3_OnChecked"></RadioButton>
<RadioButton Height="30" Content="Button4" Grid.Column="4" Style="{StaticResource RadioButtonStyle1}" GroupName="MainGroup" Checked="Button4_OnChecked"></RadioButton>
</Grid>

Toggle Switch color Windows Phone 8

I'm creating an app where on my main page I have a list with a ToggleSwitch control on each row but the control doesn't appear on the phone emulator. The XAML for the ToggleSwitch control is as below:
<toolkit:ToggleSwitch x:Name="ToggleSwitch" IsChecked="false" Content="Content Goes here" Checked="switch_Unchecked" Unchecked="switch_Unchecked" BorderBrush="black" Background="Black" Width="200"/>
When I click on that code, it shows me that:
So I believe that the control with BorderBrush=black and Background=Black is at the right place but it doesn't appear...
May somebody helps me with that ?

What's the color of your Grid Background color? There might be some problem with that too. Try applying the following style for the Toggle Switch.
<Grid x:Name="LayoutRoot" Background="White">
<toolkit:ToggleSwitch Margin="12,0" Content="Live Update" Background="White" Foreground="Black" Style="{StaticResource FixedToggleSwitchStyle}"/>
</Grid>
And the style is,
<Style x:Key="FixedToggleSwitchButtonStyle" TargetType="toolkitPrimitives:ToggleSwitchButton">
<Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
<Setter Property="Background" Value="{StaticResource PhoneBackgroundBrush}"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="SwitchForeground" Value="{StaticResource PhoneAccentBrush}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="toolkitPrimitives:ToggleSwitchButton">
<Border x:Name="Root" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CacheMode="BitmapCache" Opacity="{TemplateBinding Opacity}" Padding="{TemplateBinding Padding}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="Disabled">
<Storyboard>
<ColorAnimation Duration="0" To="{TemplateBinding Foreground}" Storyboard.TargetProperty="(Grid.Background).(SolidColorBrush.Color)" Storyboard.TargetName="SwitchBottom"/>
<ColorAnimation Duration="0" To="{TemplateBinding Foreground}" Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)" Storyboard.TargetName="ThumbCenter"/>
<DoubleAnimation Duration="0" To="0.3" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="CheckStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="0:0:0.05" To="Unchecked"/>
<VisualTransition GeneratedDuration="0:0:0.05" To="Checked"/>
</VisualStateGroup.Transitions>
<VisualState x:Name="Checked">
<Storyboard>
<DoubleAnimation Duration="0" To="69" Storyboard.TargetProperty="(TranslateTransform.X)" Storyboard.TargetName="BackgroundTranslation">
<DoubleAnimation.EasingFunction>
<ExponentialEase EasingMode="EaseOut" Exponent="15"/>
</DoubleAnimation.EasingFunction>
</DoubleAnimation>
<DoubleAnimation Duration="0" To="69" Storyboard.TargetProperty="(TranslateTransform.X)" Storyboard.TargetName="ThumbTranslation">
<DoubleAnimation.EasingFunction>
<ExponentialEase EasingMode="EaseOut" Exponent="15"/>
</DoubleAnimation.EasingFunction>
</DoubleAnimation>
</Storyboard>
</VisualState>
<VisualState x:Name="Dragging"/>
<VisualState x:Name="Unchecked">
<Storyboard>
<DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="(TranslateTransform.X)" Storyboard.TargetName="BackgroundTranslation"/>
<DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="(TranslateTransform.X)" Storyboard.TargetName="ThumbTranslation"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid x:Name="SwitchRoot" Background="Transparent" Height="95" Width="136">
<Grid x:Name="SwitchTrack" Width="89">
<Grid x:Name="SwitchBottom" Background="{TemplateBinding SwitchForeground}" Height="34">
<Rectangle x:Name="SwitchBackground" Fill="{TemplateBinding Background}" HorizontalAlignment="Center" Height="20" VerticalAlignment="Center" Width="77">
<Rectangle.RenderTransform>
<TranslateTransform x:Name="BackgroundTranslation"/>
</Rectangle.RenderTransform>
</Rectangle>
<Border BorderBrush="{TemplateBinding Foreground}" BorderThickness="3">
<Border BorderBrush="{TemplateBinding Background}" BorderThickness="4"/>
</Border>
</Grid>
<Border x:Name="SwitchThumb" BorderBrush="{TemplateBinding Background}" BorderThickness="4,0" HorizontalAlignment="Left" Height="38" Margin="-4,0" Width="28">
<Border.RenderTransform>
<TranslateTransform x:Name="ThumbTranslation"/>
</Border.RenderTransform>
<Border x:Name="ThumbCenter" BorderBrush="{TemplateBinding Foreground}" BorderThickness="2" Background="{TemplateBinding Foreground}"/>
</Border>
</Grid>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="FixedToggleSwitchStyle" TargetType="toolkit:ToggleSwitch">
<Setter Property="Background" Value="{StaticResource PhoneBackgroundBrush}"/>
<Setter Property="FontFamily" Value="{StaticResource PhoneFontFamilyLight}"/>
<Setter Property="FontSize" Value="{StaticResource PhoneFontSizeLarge}"/>
<Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="SwitchForeground" Value="{StaticResource PhoneAccentBrush}"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="toolkit:ToggleSwitch">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CacheMode="BitmapCache" Padding="{TemplateBinding Padding}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To="0.3" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Header"/>
<DoubleAnimation Duration="0" To="0.3" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Content"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid Margin="12,5,12,42">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ContentControl x:Name="Header" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Foreground="{StaticResource PhoneSubtleBrush}" FontSize="{StaticResource PhoneFontSizeNormal}" FontFamily="{StaticResource PhoneFontFamilyNormal}" HorizontalAlignment="Left" IsTabStop="False" Margin="-1,0,0,0" Opacity="{TemplateBinding Opacity}" VerticalAlignment="Bottom"/>
<ContentControl x:Name="Content" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsTabStop="False" Margin="-1,1,0,-7" Opacity="{TemplateBinding Opacity}" Grid.Row="1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
<toolkitPrimitives:ToggleSwitchButton x:Name="Switch" Background="{TemplateBinding Background}" Grid.Column="1" Margin="-22,-29,-24,-28" Opacity="{TemplateBinding Opacity}" Grid.RowSpan="2" SwitchForeground="{TemplateBinding SwitchForeground}" VerticalAlignment="Bottom" Style="{StaticResource FixedToggleSwitchButtonStyle}" Foreground="{TemplateBinding Foreground}"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Change your Background color and Foreground color as per your needs in Toggle Switch.

Have either one of these property, Background or the BorderBrush.
Why don't you try it this way?
xaml:
<ToggleSwitch x:Name="toggleSwitch1" Header="ToggleSwitch"
OnContent="On" OffContent="Off"
Toggled="ToggleSwitch_Toggled"/>
private void ToggleSwitch_Toggled(object sender, RoutedEventArgs e)
{
// Add code to perform some action here.
}
Have a look at this too. Is that the one you're using from the Toolkit or what?
Hope it helps!

How to change image of listbox item on selection change Wp8

I have to show a listbox which have UI similar as below:
On selection change of list box item I can change the background and foreground of list box item. But i need to change the image also. On selection change the image should change and when i select other item the previous item image should get reset and next selected item image should get change.
Is it possible?
How can I do this?
EDIT 1: the data template I am using for
<DataTemplate x:Key="SideListTemplate">
<StackPanel Orientation="Vertical" Margin="0" Height="73">
<StackPanel Orientation="Horizontal" VerticalAlignment="Center" Margin="10">
<Image Width="50" VerticalAlignment="Center"
Height="50" Source="{Binding OptionImageSource}"></Image>
<TextBlock Margin="20,0,0,0" VerticalAlignment="Center"
Text="{Binding OptionName}" FontSize="25"></TextBlock>
</StackPanel>
<Image Height="1" Source="/Assets/Images/SideBar/CL_divider_line.png"></Image>
</StackPanel>
</DataTemplate>
and the style I am using is:
<Style x:Key="SelectedItemStyle" TargetType="ListBoxItem">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border x:Name="LayoutRoot" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"
HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver"/>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TransparentBrush}"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Duration="0" To=".5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ContentContainer"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ContentContainer"
Storyboard.TargetProperty="Foreground"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#3A3939"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Selected">
<Storyboard>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="ContentContainer"
Storyboard.TargetProperty="Foreground"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#FFFFFF"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames
Storyboard.TargetName="border"
Storyboard.TargetProperty="Background"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<SolidColorBrush Color="#0659B7"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<StackPanel x:Name="border" Orientation="Horizontal">
<ContentControl x:Name="ContentContainer"
ContentTemplate="{TemplateBinding ContentTemplate}"
Content="{TemplateBinding Content}"
Foreground="{TemplateBinding Foreground}"
HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="{TemplateBinding Padding}"
VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
</StackPanel>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
The xaml code is:
<ListBox Name="listSideOptions"
ItemContainerStyle="{StaticResource SelectedItemStyle}"
ItemTemplate="{StaticResource SideListTemplate}">
</ListBox>
Thanks
Deepti

try this
private void listname_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
(((sender.Content as StackPanel).Children[0] as StackPanel).Children[0] as Image).Source
= //Whatever the new source is;
listSideOptions.SelectedIndex = -1;
}

Customizing selected ListboxItem

I have a ListBox (actually, i have a Telerik's RadJumpList, but afaik it is inherited from ListBox) with custom ItemContainerStyle. Each item contains a rectangle (tile) and 2 strings. So far, it works okay by default: when i'm selecting an item, color of strings is changing, and rectangle has const color.
<DataTemplate x:Key="DataTemplate1">
<Grid Margin="0,0,12,12">
<Rectangle
x:Name="SlotTile"
Width="99" Height="99" Fill="Gray"/>
<StackPanel Grid.Row="0">
<TextBlock
FontWeight="Black"
FontSize="{StaticResource PhoneFontSizeSmall}"
Text="{Binding Title, Converter={StaticResource ToUpperConverter}}" />
<TextBlock
FontFamily="{StaticResource PhoneFontFamilySemiBold}"
FontSize="{StaticResource PhoneFontSizeSmall}"
Text="{Binding Information}" />
</StackPanel>
</Grid>
</DataTemplate>
What i want to do now is to customize selected item: tile's color should be changed, while color of the strings should be the same.
I'm trying to set a custom style, using VisualStateManager, but i have no idea how to get rectangle's and string's color.
<Style x:Name="MySlotStyle" TargetType="ListBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Grid
Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Selected">
<Storyboard>
<ColorAnimation
Storyboard.TargetName=""
Storyboard.TargetProperty=""
/>
</Storyboard>
</VisualState>
<VisualState x:Name="Unelected">
<Storyboard>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
So, the question is how to set DataTemplate's properties from the Style.
EDIT: uploaded a sample: http://1drv.ms/1cJrjZ4
EDIT2: i extracted (and modified a bit) a style from checkbox: http://pastebin.com/2JV7d5We
They are describing the control inside of the ControlTemplate.
So, i planned to get rid of DataTemplate and move everything to the Style.Template.ControlTemplate. Now, when i'm trying to create a Template binding to a new property (color of the rectangle), it says "the member fill is not recognized".
<Style x:Name="TestStyle" TargetType="ListBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Grid Margin="0,0,12,12">
<VisualStateManager.VisualStateGroups>
****
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="SlotTile" Storyboard.TargetProperty="Fill">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneAccentBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Description" Storyboard.TargetProperty="TextForeground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource BlackBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Rectangle
x:Name="SlotTile"
Width="99" Height="99"
Fill="{TemplateBinding Fill}"/>
<TextBlock
x:Name="Description"
Foreground="{TepmlateBinding TextForeground}"
Text="{Binding Title}" />
****
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

You should edit a copy of the ItemContainerStyle style and put your grid that acts as your container inside it. Then you can edit the VisualState.Selected storyboard and set the target as your Rectangle and the TargetProperty as Fill.
Here is the XAML code for the ItemContainerStyle:
<Style x:Key="ItemContainerCustomStyle" TargetType="ListBoxItem">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border x:Name="LayoutRoot" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver"/>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TransparentBrush}"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Duration="0" To=".5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ContentContainer"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="SlotTile">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneAccentBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid Margin="0,0,12,12">
<Rectangle
x:Name="SlotTile"
Width="99" Height="99" />
<ContentControl x:Name="ContentContainer" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
EDIT: you could even simplify it by using the Border container element from the default style. Thus you can remove the Grid and Rectangle elements.
<Style x:Key="ItemContainerCustomStyle" TargetType="ListBoxItem">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Width="99" Height="99" x:Name="LayoutRoot" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver"/>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TransparentBrush}"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Duration="0" To=".5" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="ContentContainer"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="LayoutRoot">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneAccentBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentControl x:Name="ContentContainer" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Can't you set those properties by name?
<ColorAnimation
Storyboard.TargetName="SlotTile"
Storyboard.TargetProperty="Fill"
...
/>
How to customize the WP7 ListBox Selected Item | Part1
How to customize the WP7 ListBox Selected Item | Part2

How to Control StoryBoard in Code Behind

Upon a button click event, I am showing a border around an item in a LongListSelector. I have having an issue, however, when leaving the page and then returning. When leaving, I would like to programmatically unselect the item (which is working) but the border around the item still shows when returning to the page. How might I remove the border as well? This is very confusing when a user expects no item to be selected when the original page is loaded, whether it be from application start or from being navigated to from another page.
MainPage.xaml
<phone:PhoneApplicationPage.Resources>
<Style x:Key="PhoneButtonBase" TargetType="ButtonBase">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderBrush" Value="{StaticResource PhoneForegroundBrush}"/>
<Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
<Setter Property="BorderThickness" Value="{StaticResource PhoneBorderThickness}"/>
<Setter Property="FontFamily" Value="{StaticResource PhoneFontFamilySemiBold}"/>
<Setter Property="FontSize" Value="{StaticResource PhoneFontSizeMedium}"/>
<Setter Property="Padding" Value="10,5,10,6"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ButtonBase">
<Grid Background="Transparent">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver"/>
<VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentContainer">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneButtonBasePressedForegroundBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="ButtonBackground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneAccentBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentContainer">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneDisabledBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="ButtonBackground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneDisabledBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="ButtonBackground">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="ButtonBackground" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="0" Margin="{StaticResource PhoneTouchTargetOverhang}">
<ContentControl x:Name="ContentContainer" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="PhoneRadioButtonCheckBoxBase" BasedOn="{StaticResource PhoneButtonBase}" TargetType="ToggleButton">
<Setter Property="Background" Value="{StaticResource PhoneRadioCheckBoxBrush}"/>
<Setter Property="BorderBrush" Value="{StaticResource PhoneRadioCheckBoxBorderBrush}"/>
<Setter Property="FontSize" Value="{StaticResource PhoneFontSizeMedium}"/>
<Setter Property="FontFamily" Value="{StaticResource PhoneFontFamilyNormal}"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="0"/>
</Style>
<Style x:Key="RadioButtonStyle1" BasedOn="{StaticResource PhoneRadioButtonCheckBoxBase}" TargetType="RadioButton">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="RadioButton">
<Grid Background="Transparent">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver"/>
<VisualState x:Name="Pressed"/>
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentContainer">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneDisabledBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="CheckStates">
<VisualState x:Name="Checked"/>
<VisualState x:Name="Unchecked"/>
<VisualState x:Name="Indeterminate"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentControl x:Name="ContentContainer" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</phone:PhoneApplicationPage.Resources>
...
<phone:LongListSelector x:Name="Recent" Margin="0,0,0,72"
LayoutMode="Grid" GridCellSize="108,108"
SelectionChanged="recent_SelectionChanged">
<phone:LongListSelector.ItemTemplate>
<DataTemplate>
<ContentControl HorizontalAlignment="Stretch" HorizontalContentAlignment="Left">
<ContentControl.Resources>
<Storyboard x:Name="CheckedStoryboard">
<ColorAnimation Duration="0" To="#FF1BA1E2" Storyboard.TargetProperty="(Border.BorderBrush).(SolidColorBrush.Color)" Storyboard.TargetName="brd" d:IsOptimized="True"/>
</Storyboard>
</ContentControl.Resources>
<RadioButton x:Name="radioButton" HorizontalAlignment="Stretch" Margin="0,0,0,0" GroupName="A" Background="Black" Style="{StaticResource RadioButtonStyle1}" >
<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<eim:ControlStoryboardAction Storyboard="{StaticResource CheckedStoryboard}"/>
</i:EventTrigger>
<i:EventTrigger EventName="Unchecked">
<eim:ControlStoryboardAction ControlStoryboardOption="Stop" Storyboard="{StaticResource CheckedStoryboard}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
<Border x:Name="MyBorder" Background="Transparent">
<Border x:Name="brd" CornerRadius="10" Width="Auto" BorderThickness="3" BorderBrush="Transparent">
<toolkit:ContextMenuService.ContextMenu>
<toolkit:ContextMenu x:Name="imgListContextMenu" Background="{StaticResource PhoneChromeBrush}">
<toolkit:MenuItem Foreground="{StaticResource PhoneForegroundBrush}" Header="{Binding Path=LocalizedResources.MainPage_ContextMenu_Delete, Source={StaticResource LocalizedStrings}}" Click="deleteContextMenuItem_Click"/>
</toolkit:ContextMenu>
</toolkit:ContextMenuService.ContextMenu>
<Viewbox Width="108" Height="108">
<Image x:Name="recentImage" Source="{Binding Source}" Margin="0" Width="108"/>
</Viewbox>
</Border>
</Border>
</RadioButton>
</ContentControl>
</DataTemplate>
</phone:LongListSelector.ItemTemplate>
</phone:LongListSelector>
MainPage.xaml.cs
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
//Removes the selected item, but the border still shows when returning to the page?
Recent.SelectedItem = null;
}

You've shown a lot of code but most of it doesn't seem to be relevant to your actual question. You also haven't made it clear how you're highlighting the selected item.
Based on the limited information you've provided I'd guess that you're using code to trigger changing of the state/style of the item.
You're then changing the SelectedItem property on the list but you haven't bound this to anything and so it makes no change.
The simplest solution would be to bind to the selected item and have a different state when selected.
Alternatively, if you really want to use a button press to trigger the highlighting, you'll need remove this highlighting in a similar way. That is, on page exit you clear the highlighting from whatever item is highlighted. This could be done by walking the visual tree to identify the highlighted item, or having a [bound] property on the underlying viewmodel which you can query/update.