Develop Reference

ListView Scroll whole layout/page

How can I make the ListView/Layout scroller to behave like modern layout like in android or windows 10. Currently the ListView scrollbar only applies to the ListView itself. I want the scroller to scroll the whole layout including the search bar in XAML.
I want also the ListView Items added to increment to the overall height of the ListView to achieve the effect.
Any available ways to do it with Native wpf xaml (No frameworks/dlls, just pure xaml/c#)
Code:
<local:BasePage x:Class="GeneralMerchandise.UI.Pages.UsersPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:a="clr-namespace:GeneralMerchandise.UI.AttachedProperties"
xmlns:local="clr-namespace:GeneralMerchandise.UI.Pages"
xmlns:c="clr-namespace:GeneralMerchandise.UI.Converter"
xmlns:viewmodel="clr-namespace:GeneralMerchandise.UI.ViewModel"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800"
Title="UsersPage">
<Page.DataContext>
<viewmodel:UsersViewModel x:Name="VM"/>
</Page.DataContext>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<StackPanel Orientation="Vertical"
Grid.Row="0"
Background="{StaticResource DefaultBackground}">
<TextBlock FontSize="{StaticResource FontSizeXLarge}"
Text="Users" />
<Border BorderThickness="0 0 0 1">
<Grid>
<StackPanel Orientation="Vertical" Width="300">
<TextBox Style="{StaticResource FlatTextBox}"
Width="270"
Margin="8"
a:Hint.TextProperty="Search"
a:ClearableText.EnableClearTextProperty="True"
Text="{Binding Search, UpdateSourceTrigger=PropertyChanged}"/>
<StackPanel Orientation="Horizontal"
HorizontalAlignment="Center">
<StackPanel.Resources>
<Style TargetType="RadioButton" BasedOn="{StaticResource FlatToggle}">
<Setter Property="Padding"
Value="15 10"/>
<Setter Property="BorderThickness"
Value="0 0 0 3"/>
</Style>
</StackPanel.Resources>
<RadioButton GroupName="Filter"
Content="All"
IsChecked="True"
Command="{Binding FilterActiveCommand}"
CommandParameter="{x:Static viewmodel:UsersViewModel+FilterActiveProperty.None }"/>
<RadioButton GroupName="Filter"
Content="Active"
Command="{Binding FilterActiveCommand}"
CommandParameter="{x:Static viewmodel:UsersViewModel+FilterActiveProperty.Active }"/>
<RadioButton GroupName="Filter"
Content="Deactived"
Command="{Binding FilterActiveCommand}"
CommandParameter="{x:Static viewmodel:UsersViewModel+FilterActiveProperty.Deactivated }"/>
</StackPanel>
</StackPanel>
<Button DockPanel.Dock="Right"
Content="New"
HorizontalAlignment="Right"
VerticalAlignment="Top"
Command="{Binding NewUserCommand}"/>
</Grid>
</Border>
</StackPanel>
<ListView Grid.Row="2"
Background="Transparent"
ItemsSource="{Binding UsersDisplay}"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
ScrollViewer.VerticalScrollBarVisibility="Auto"
BorderThickness="0"
Padding="20">
<ListView.Resources>
<c:UserDisplayDataFullnameConverter x:Key="FullnameConverter"/>
<c:BoolToValueConverter TrueValue="Active" FalseValue="Deactivated" x:Key="BoolToStringConverter"/>
</ListView.Resources>
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel HorizontalAlignment="Left" Orientation="Horizontal" />
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<Button Style="{StaticResource PlainButton}"
Background="White"
DataContext="{Binding}"
Width="250"
Height="150"
Padding="5"
BorderThickness="2"
Margin="{StaticResource MarginSmall}"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch">
<Button.ToolTip>
<ToolTip>
<TextBlock Text="NAME"/>
</ToolTip>
</Button.ToolTip>
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Ellipse Grid.Column="0"
Margin="5"
VerticalAlignment="Top"
Height="{Binding Path=ActualWidth, RelativeSource={RelativeSource Self}}"
Fill="{StaticResource LightGrayBrush}"/>
<Ellipse Grid.Column="0"
Margin="5"
VerticalAlignment="Top"
x:Name="userPicturePopup"
Height="{Binding Path=ActualWidth, RelativeSource={RelativeSource Self}}"
Width="Auto">
<Ellipse.Fill>
<ImageBrush ImageSource="{StaticResource UserIconMedium}"/>
</Ellipse.Fill>
</Ellipse>
<StackPanel Grid.Column="1"
Orientation="Vertical">
<TextBlock Text="{Binding Converter={StaticResource FullnameConverter}}"
TextWrapping="WrapWithOverflow"
Margin="10 5"/>
<TextBlock Margin="10 5"
Text="{Binding Created, StringFormat=Created {0:d}}"/>
<TextBlock Margin="10 5"
Text="{Binding IsActive, Converter={StaticResource BoolToStringConverter}, StringFormat=Account Is {0}}"/>
</StackPanel>
</Grid>
</Button>
</DataTemplate>
</ListView.ItemTemplate>
<ListView.ItemContainerStyle>
<Style TargetType="{x:Type ListViewItem}">
<Setter Property="Background" Value="Transparent" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListViewItem}">
<Border BorderBrush="Transparent"
BorderThickness="3"
Background="{TemplateBinding Background}">
<ContentPresenter />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListView.ItemContainerStyle>
</ListView>
</Grid>

Put your ListView, search bar, and whatever else you want to scroll inside of a ScrollViewer.

Link a ListBox Borderbrush property to a IsEnabled button

I have two TextBoxes, two ListBoxes, a Cancel button and an OK button.
Simplifying the problem, I would like to link the color of the Borderbrush of the second ListBox to the IsEnabled property of the OK button.
An alternative would be link that color change to the ListBoxItem background instead of the Listbox border itself.
Is it possible (maybe through Triggers or something)? If so, could you show me the way?
The XAML of the window is as follows:
<Window x:Class="Opt.ExpertSystem.View.WindowPasteRules"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
xmlns:scroll="clr-namespace:Opt.ExpertSystem.View"
Title="Paste Rules Options" Width="400" Height="300">
<Window.InputBindings>
<KeyBinding Key="Esc" Command="{Binding CancelCommand}" />
</Window.InputBindings>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="28"/>
<RowDefinition Height="100*"/>
<RowDefinition Height="35"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="76*" />
</Grid.ColumnDefinitions>
<Label Content="Select Rules to Paste: " Grid.Column="0" Grid.Row="0" HorizontalAlignment="Right" HorizontalContentAlignment="Right" Margin="0,0,2,0" Width="Auto"/>
<Grid Grid.Row="1" Grid.ColumnSpan="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" >
<Grid.Resources>
<Style TargetType="ScrollViewer">
<Setter Property="scroll:ScrollSynchronizer.ScrollGroup" Value="Group1" />
</Style>
</Grid.Resources>
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition Height="50*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="5" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Label Content="Replace" HorizontalAlignment="Stretch" FontWeight="Bold"/>
<TextBox Margin="55,2,2,2" Text="{Binding CopyNameOrigin}" ToolTip="Non-editable field. Represents the text you want to replace." Focusable="False"/>
<Label Content="With" Grid.Column="2" HorizontalAlignment="Stretch" FontWeight="Bold"/>
<TextBox Grid.Column="2" Margin="42,2,2,2" Text="{Binding CopyNameNew, UpdateSourceTrigger=PropertyChanged}" ToolTip="Represents the results of the changes to be made." />
<ListBox ItemsSource="{Binding Path=CopiedRules}" Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Column="0" BorderThickness="1" BorderBrush="CornflowerBlue" Grid.IsSharedSizeScope="True" Margin="2,0,2,10" >
<ListBox.ItemTemplate>
<DataTemplate>
<Label Content="{Binding Name}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<ListBox ItemsSource="{Binding Path=PasteRules}" Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Column="2" BorderThickness="1" BorderBrush="CornflowerBlue" Margin="2,0,2,10" >
<ListBox.ItemTemplate>
<DataTemplate>
<CheckBox Content="{Binding Name}" IsChecked="{Binding IsChecked}" Margin="2,5,2,5" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
<Grid Grid.Row="2" Background="#FFECE9D8" Grid.ColumnSpan="2">
<Button Content="OK" x:Name="btnOK" IsEnabled="{Binding IsValid, UpdateSourceTrigger=PropertyChanged}" Margin="0,6,6,0" Grid.Row="3" Grid.Column="1" HorizontalAlignment="Right" VerticalAlignment="Top" Width="75" Height="23" Click="btnOK_Click" />
<Button Content="Cancel" x:Name="btnCancel" IsCancel="True" Margin="0,6,90,0" Grid.Row="3" Grid.Column="1" HorizontalAlignment="Right" VerticalAlignment="Top" Width="75" Height="23" />
</Grid>
</Grid>
</Window>

Here's a small example that changes the border brush of a listview based on the IsEnabled property of a button
<StackPanel>
<ListBox Height="100">
<ListBox.Style>
<Style TargetType="ListBox">
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=okButton, Path=IsEnabled}" Value="false">
<Setter Property="BorderBrush" Value="Red"/>
</DataTrigger>
<DataTrigger Binding="{Binding ElementName=okButton, Path=IsEnabled}" Value="true">
<Setter Property="BorderBrush" Value="Blue"/>
</DataTrigger>
</Style.Triggers>
</Style>
</ListBox.Style>
</ListBox>
<Button IsEnabled="True" Name="okButton">true</Button>
</StackPanel>
But I would set the availability of the button on the command and not in the XAML, also I would bind the color of the ListView to the IsValid property in the ViewModel instead.

Some controls are not stretching [duplicate]

This question already has an answer here:
WPF Grid horizontalalignment doesn't work. Sizes don't changes
(1 answer)
Closed 8 years ago.
In this window I have many different controls and I want to stretch which is possible
but there are some controls by 'stackGroup', 'listBox1', 'listBox2' that don't stretching.. Why ??
Also is this way i right to do this kind of pages
<Window x:Class="TwoColumnGridSample.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Loaded="Window_Loaded"
Title="Window1" Height="759" Width="800">
<Grid Margin="0,0,0,95">
<Grid.RowDefinitions>
<RowDefinition Height="509"></RowDefinition>
<RowDefinition Height="111"></RowDefinition>
</Grid.RowDefinitions>
<Grid Grid.Row="0" Height="472" VerticalAlignment="Top">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="165" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<StackPanel Grid.Column="0" VerticalAlignment="Stretch" Margin="0,0,0,163">
<ListBox Name="listBox1" SelectedItem="{Binding SelectedItem}" Width="165" ItemsSource="{Binding Buttons}" SelectionChanged="ListBox_SelectionChanged" HorizontalContentAlignment="Left" VerticalAlignment="Stretch" >
<ListBox.ItemTemplate>
<DataTemplate>
<Button Content="{Binding .}" Click="Button_Click" Style="{StaticResource listboxbuttons}"></Button>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
<StackPanel Name="stackGroup" HorizontalAlignment="Stretch" Grid.Column="1" Height="457" VerticalAlignment="Top" >
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Height="460" Margin="0,0,10,0" >
<Grid.RowDefinitions>
<RowDefinition Height="100" />
<RowDefinition Height="24" />
<RowDefinition Height="316"/>
<RowDefinition Height="60" />
</Grid.RowDefinitions>
<Image x:Name="imageMap" Source="Resources/images.jpg" HorizontalAlignment="Stretch" Grid.Row="0" Stretch="Fill" Margin="2,0,0,0" />
<Border BorderBrush="Green" BorderThickness="3" CornerRadius="1,1,1,1" Margin="2,4,0,17" Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.RowSpan="2">
<Grid Grid.Row="1" Margin="3,3,3,3">
<GroupBox Header="Club Badge" HorizontalAlignment="Left" VerticalAlignment="Top" Height="123" Width="134"/>
<GroupBox Header="Goalie" HorizontalAlignment="Left" VerticalAlignment="Top" Height="179" Width="134" Margin="0,128,0,0"/>
<GroupBox Header="Defender" HorizontalAlignment="Left" Margin="139,0,0,0" VerticalAlignment="Top" Height="307" Width="134"/>
<GroupBox Header="MidFielder" HorizontalAlignment="Left" Margin="278,0,0,0" VerticalAlignment="Top" Height="307" Width="134"/>
<GroupBox Header="GroupBox" HorizontalAlignment="Left" Margin="417,0,0,0" VerticalAlignment="Top" Height="307" Width="155"/>
</Grid>
</Border>
<ProgressBar BorderBrush="#FF6081B0" HorizontalAlignment="Stretch" Margin="2,303,0,43" Value="45" Grid.Row="2" Foreground="#FF6081B0" Grid.RowSpan="2" />
</Grid>
</StackPanel>
</Grid>
<ListBox Height="96" HorizontalAlignment="Stretch" Margin="0,0,0,0" VerticalAlignment="Bottom" Name="listBox2" Width="782" Grid.RowSpan="2">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="Padding" Value="30 0 30 0" />
</Style>
</ListBox.ItemContainerStyle>
<ListBoxItem Content="Vertical Item 1" />
<ListBoxItem Content="Vertical Item 2" />
<ListBoxItem Content="Vertical Item 3" />
<ListBoxItem Content="Vertical Item 4" />
<ListBoxItem Content="Vertical Item 5" />
</ListBox>
</Grid>
</Window>

Same answer as in this question. StackPanel will not respect stretch alignments in the same direction as its orientation. So a StackPanel whose orientation is vertical will not respect a VerticalAlignment of stretch for a child.
listBox1 doesn't stretch because it's VerticalAlignment is stretch and it's container StackPanel has an orientation of Vertical (that's its default). You could change that StackPanel to be horizontal, replace it with another container (such as a DockPanel), or remove it entirely since it only contains one element.
Similar reasoning can be applied to your other issues

How to right align some elements of WPF ListItem?

I have a WPF listbox and have updated the list item data template to have essentially a 3 column layout.
I would like:
|status color|name| buttons|
These are probably CSS terms but I want to float the status color and name to the left, which I've done, then I would like the buttons to be floated to the right, and always stay to the right even as the window gets wider.
I feel like I'm so close, the list item widths grow when the window gets wider, all I feel I have to do is tell the buttons to float right but can't figure out how. I've tried stack panels, a grid with a auto|*|auto column layout (With a stretch on the last column) and I've tried a dockpanel.
Here's my XAML:
<Controls:MetroWindow x:Class="Appsecute.Views.MainView2"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
xmlns:AppsecuteControls="clr-namespace:Appsecute.Controls"
Title="APPSECUTE" Height="630" Width="480" Icon="/Appsecute;component/Images/icon.png" WindowStartupLocation="CenterScreen">
<Window.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Colours.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.AnimatedSingleRowTabControl.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro.Resources;component/Icons.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Window.Resources>
<Grid Margin="0,0,12,0">
<AppsecuteControls:NotifyIcon
x:Name="NotifyIcon"
Text="Appsecute"
Icon="/Images/icon.ico" MouseDoubleClick="NotifyIconMouseDoubleClick" Grid.ColumnSpan="2">
<AppsecuteControls:NotifyIcon.ContextMenu>
<ContextMenu StaysOpen="False">
</ContextMenu>
</AppsecuteControls:NotifyIcon.ContextMenu>
</AppsecuteControls:NotifyIcon>
<Grid Height="auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="auto" Margin="12,0,0,24">
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="*" />
<RowDefinition Height="auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Label Content="APPLICATIONS" Height="auto" Name="LabelApplications" Grid.Row="0" Padding="2" Margin="0,8,0,0" VerticalAlignment="Top" />
<ListBox Height="auto" Name="ListBoxApplications" Width="auto" Grid.Row="1" Grid.ColumnSpan="3" Focusable="False" Background="White" BorderBrush="{x:Null}" SelectionChanged="ListBoxApplicationsSelectionChanged">
<ListBox.ItemContainerStyle>
<Style TargetType="{x:Type ListBoxItem}">
<Setter Property="HorizontalAlignment" Value="Stretch"></Setter>
<Setter Property="Padding" Value="0"></Setter>
<Setter Property="Background" Value="#EEEEEE"></Setter>
<Setter Property="BorderBrush" Value="White"></Setter>
<Setter Property="BorderThickness" Value="0,0,0,2"></Setter>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="BorderBrush" Value="#FF4EA6EA"></Setter>
</Trigger>
</Style.Triggers>
</Style>
</ListBox.ItemContainerStyle>
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<StackPanel Grid.Column="0" Orientation="Horizontal">
<Rectangle Fill="{Binding StateColor}" Width="5" Height="auto" Margin="0,0,5,0"></Rectangle>
<StackPanel Orientation="Vertical">
<StackPanel Orientation="Horizontal" Margin="0,4,0,0">
<TextBlock Text="{Binding DisplayName}" FontSize="20" Padding="2" />
</StackPanel>
<StackPanel Orientation="Horizontal" Margin="0,4">
<TextBlock Text="{Binding CloudName}" FontSize="12" Foreground="#FF666666" />
<TextBlock Text=" - " FontSize="12" Foreground="#FF666666" />
<TextBlock Text="{Binding Username}" FontSize="12" Foreground="#FF666666" />
</StackPanel>
</StackPanel>
</StackPanel>
<DockPanel Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Right">
<Button Background="{x:Null}" BorderBrush="{x:Null}" Focusable="False" Tag="{Binding}" Name="ButtonUpload" ToolTip="Upload Application" Click="ButtonUploadClick">
<StackPanel>
<Image Width="24" Height="24" Source="/Appsecute;component/Images/upload.png"/>
</StackPanel>
</Button>
<Button Background="{x:Null}" BorderBrush="{x:Null}" Focusable="False" Tag="{Binding}" Name="ButtonStart" Click="ButtonStartClick" ToolTip="Start Application" IsEnabled="{Binding IsStopped}">
<StackPanel>
<Image Width="24" Height="24" Source="/Appsecute;component/Images/play.png" />
</StackPanel>
</Button>
<Button Background="{x:Null}" BorderBrush="{x:Null}" Focusable="False" Tag="{Binding}" Name="ButtonStop" ToolTip="Stop Application" Click="ButtonStopClick" IsEnabled="{Binding IsStarted}">
<StackPanel>
<Image Width="24" Height="24" Source="/Appsecute;component/Images/stop.png"/>
</StackPanel>
</Button>
<Button Background="{x:Null}" BorderBrush="{x:Null}" Focusable="False" Click="ButtonRestartClick" Tag="{Binding}" Name="ButtonRestart" ToolTip="Restart Application">
<StackPanel>
<Image Width="24" Height="24" Source="/Appsecute;component/Images/restart.png"/>
</StackPanel>
</Button>
</DockPanel>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Label Content="SERVICE INSTANCES" Height="auto" Name="LabelServiceInstances" Grid.Row="2" Grid.ColumnSpan="3" Padding="2" Margin="0,8,0,0" VerticalAlignment="Top" />
<ListBox Height="auto" Name="ListBoxServiceInstances" Width="auto" Grid.Row="3" Grid.RowSpan="2" Grid.ColumnSpan="3" />
</Grid>
<Label Height="28" HorizontalAlignment="Left" Margin="0,0,0,0" Name="LabelStatus" VerticalAlignment="Bottom" Width="auto" VerticalContentAlignment="Bottom" HorizontalContentAlignment="Stretch" FontSize="10" />
</Grid>
</Controls:MetroWindow>
And an image of what I'm trying to achieve:

The problem is at the first level below DataTemplate, here:
<StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch">
By its nature a StackPanel will align items to the left, so it's not a layout that's well suited to what you want to do. Instead try using a Grid with two columns, giving the left column Width=* and the right Width=Auto.
<ListBox HorizontalContentAlignment="Stretch">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<StackPanel Grid.Column="0" Orientation="Vertical">
...
</StackPanel>
<DockPanel Grid.Column="1" VerticalAlignment="Center">
...
</DockPanel>
</Grid>
<DataTemplate>
</ListBox.ItemTemplate>
<ListBox>

In your ItemContainerStyle, set the HorizontalAlignment to Stretch. I believe it is Left by default, which may be causing the Grid or StackPanel or whatever container you use to collapse.

wpf overlay an image to a mediaelement

I would show over a mediaelement, a classic image play and when the pointer enter on the mediaelement this image disappears.
The mediaelement is like this and this works well. I post a portion of code:
<toolkit:DataGrid.RowDetailsTemplate>
<DataTemplate x:Name="DataTemplateDgRows">
<Border HorizontalAlignment="Stretch" CornerRadius="5" Background="Black" Margin="5" Padding="5">
<StackPanel Orientation="Vertical">
<TextBlock Foreground="#509CD5" FontSize="20" Width="300" TextWrapping="Wrap" Text="{Binding NomeV}"/>
<Border BorderThickness="2" CornerRadius="2" BorderBrush="LightGray" >
<MediaElement Source="{Binding MediaUri}"
LoadedBehavior="Manual" Name="mediaElement1" ScrubbingEnabled="True"
Width="360" MouseLeftButtonDown="mediaElement1_MouseLeftButtonDown"
MouseEnter="mediaElement1_MouseEnter"
MouseLeave="mediaElement1_MouseLeave"
Loaded="mediaElement1_Loaded" />
</Border>
May someone can help me?
thanks

Something like this will get you started.
<toolkit:DataGrid.RowDetailsTemplate>
<DataTemplate x:Name="DataTemplateDgRows">
<Border HorizontalAlignment="Stretch" CornerRadius="5" Background="Black" Margin="5" Padding="5">
<StackPanel Orientation="Vertical">
<TextBlock Foreground="#509CD5" FontSize="20" Width="300" TextWrapping="Wrap" Text="{Binding NomeV}"/>
<Border BorderThickness="2" CornerRadius="2" BorderBrush="LightGray" >
<Grid>
<Image Grid.ZIndex="1"
x:Name="image1"
Source="YourSource"/>
<MediaElement Grid.ZIndex="0"
Source="{Binding MediaUri}"
LoadedBehavior="Manual" Name="mediaElement1" ScrubbingEnabled="True"
Width="360" MouseLeftButtonDown="mediaElement1_MouseLeftButtonDown"
MouseEnter="mediaElement1_MouseEnter"
MouseLeave="mediaElement1_MouseLeave"
Loaded="mediaElement1_Loaded" />
</Grid>
</Border>
</StackPanel>
</Border>
<DataTemplate.Triggers>
<Trigger SourceName="mediaElement1" Property="IsMouseOver" Value="True">
<Setter TargetName="image1" Property="Visibility" Value="Collapsed"/>
</Trigger>
</DataTemplate.Triggers>
</DataTemplate>
</DataGrid.RowDetailsTemplate>