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Strange layout issue MVVM .Net 4.7.2 App controls disappear

I’m building a MVVM app using .Net 4.7.2 that works like a wizard (based on https://www.codeproject.com/KB/WPF/InternationalizedWizard.aspx?display=Print), so no additional frameworks, just the RelayCommand class, a MainWindow.cs that hosts the Main view (the view that has navigation items of the wizard on the left side, and the right side area that hosts the subviews which display based on the stage of the wizard).
Mi issue is that one of my users is experiencing a very strange behaviour with the controls. This is a sample photo of what the application should look like:
And this is a sample photo of what happens to the user. Notice that the image on the bottom left disappears, the bar on the bottom left also disappears, the heading and top text have moved up and clipped inside the window, and the rest of the content in the right side disappears.
Similar to the base InternationalizedWizard App I placed the controls in a grid that has horizontal + vertical alignment set to stretch. The
<Border Background="White" Grid.Column="1" Grid.Row="0">
<ScrollViewer>
<HeaderedContentControl Content="{Binding Path=CurrentPage}" Header="{Binding Path=CurrentPage.DisplayName}" />
</ScrollViewer>
</Border>
I applied this style to the HeaderedContentControl:
<Style TargetType="{x:Type HeaderedContentControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type HeaderedContentControl}">
<StackPanel Margin="2,0">
<Grid Margin="1,1,1,12" RenderTransformOrigin="0.5,0.5">
<Rectangle Fill="{DynamicResource {x:Static SystemColors.AppWorkspaceBrushKey}}" Height="3" Margin="10,-4" Opacity="0.6" RadiusX="8" RadiusY="8" VerticalAlignment="Bottom" />
<ContentPresenter ContentSource="Header" TextBlock.FontSize="22" TextBlock.FontWeight="DemiBold" TextBlock.Foreground="Black" HorizontalAlignment="Center" VerticalAlignment="Center" OpacityMask="Black" />
<Grid.Effect>
<DropShadowEffect Opacity="0.1" />
</Grid.Effect>
<Grid.RenderTransform>
<RotateTransform Angle="0" />
</Grid.RenderTransform>
</Grid>
<Grid>
<Rectangle Fill="{TemplateBinding Background}" />
<ContentPresenter ContentSource="Content" />
</Grid>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
The scrollviewer only scrolls up and down if the content is large, but in this case the content should fit fine so as expected the user won't see the scrollviewer.
The image from the bottom left that strangely disappear was placed in the column 0, row 0 of the grid a custom margin so it remains in that area:
<Image Grid.Column="0" Grid.Row="0" Source="..\Assets\SplashLogo.png" HorizontalAlignment="Center" VerticalAlignment="Bottom" Stretch="None" Margin="20,20,20,20"/>
The first page (e.g. Welcome) that displays has another grid with two
<Grid>
<Grid.RowDefinitions>
<RowDefinition MinHeight="30" MaxHeight="60"/>
<RowDefinition Height="*" MinHeight="200"/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Text="{x:Static res:Strings.SomeText_Description}" FontSize="15" FontWeight="Light" Margin="20,0,20,0" TextWrapping="Wrap" />
<StackPanel Grid.Row="1" Orientation="Horizontal" VerticalAlignment="Center" HorizontalAlignment="Center">
<Label Content="{x:Static res:Strings.WelcomeView_SomeText}" FontSize="15" FontWeight="Light" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="20,0,20,0" />
<TextBox Text="{Binding Path=SomeInput, UpdateSourceTrigger=PropertyChanged}" Height="25" Width="200" FontSize="15" FontWeight="Light" HorizontalAlignment="Left">
<TextBox.InputBindings>
<KeyBinding Key="Enter" Command="{Binding MoveNextFromWelcomeCommand}" CommandParameter="{Binding Path=Text, RelativeSource={RelativeSource AncestorType={x:Type TextBox}}}" />
</TextBox.InputBindings>
</TextBox>
</StackPanel>
</Grid>
But the contents of the stack panel completely disappear of view.
Finally, the bottom area of the main view is created in a border like this one, which also completely disappears from view:
<Border Grid.Column="0" Grid.Row="1" Background="LightGray" Grid.ColumnSpan="2">
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<TextBlock Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="5" Margin="4" FontSize="15" Text="{Binding Path=ReportStatus}" VerticalAlignment="Center" Visibility="{Binding Path=ShowReportStatus}" />
<!-- NAVIGATION BUTTONS -->
<Grid Grid.Column="2" Grid.Row="0" Grid.IsSharedSizeScope="True" HorizontalAlignment="Right" >
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Buttons" />
<ColumnDefinition SharedSizeGroup="Buttons" />
<ColumnDefinition SharedSizeGroup="Buttons" />
<ColumnDefinition SharedSizeGroup="Buttons" />
</Grid.ColumnDefinitions>
<Button Grid.Column="1" Grid.Row="0" Command="{Binding Path=MovePreviousCommand}" Style="{StaticResource movePreviousButtonStyle}" />
<Button Grid.Column="2" Grid.Row="0" Command="{Binding Path=MoveNextCommand}" Style="{StaticResource moveNextButtonStyle}" />
<Button Grid.Column="3" Grid.Row="0" Command="{Binding Path=CancelCommand}" Style="{StaticResource cancelButtonStyle}" />
</Grid>
</Grid>
</Border>
I initially thought there could be an issue with the version of .NET or OS, but my users has the latest version of Windows 10 Enterprise (10.0.17134) and dual screen with 1: 3840x2160 2: 2560x1600. I have tried to replicate that on my own computer but everything works fine for me. I also tested the App in Windows 7 and it works with no issues.
I really don't understand what could be happening, does it have anything to do with the user's DPI settings or any accessibility feature?
EDIT:
To make things a bit easier, this is the full code of the main view's xaml:
<UserControl x:Class="MyCompany.MyAppName.App.View.MyAppView"
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:local="clr-namespace:MyCompany.MyAppName.App.View"
xmlns:viewModel="clr-namespace:MyCompany.MyAppName.App.ViewModel"
xmlns:view="clr-namespace:MyCompany.MyAppName.App.View"
xmlns:res="clr-namespace:MyCompany.MyAppName.App.Assets"
xmlns:util="clr-namespace:MyCompany.MyAppName.App.Utils"
mc:Ignorable="d"
x:Name="configuratorControl" d:DesignHeight="600" d:DesignWidth="600"
>
<UserControl.Resources>
<util:PercentageConverter x:Key="percentageConverter"/>
<DataTemplate DataType="{x:Type viewModel:ObjectSelectionViewModel}">
<view:ObjectSelectionPageView/>
</DataTemplate>
<DataTemplate DataType="{x:Type viewModel:CurrentObjectComponentsViewModel}">
<view:CurrentObjectComponentsView/>
</DataTemplate>
<DataTemplate DataType="{x:Type viewModel:CurrentObjectOptionsViewModel}">
<view:CurrentObjectOptionsView/>
</DataTemplate>
<DataTemplate DataType="{x:Type viewModel:SageFourViewModel}">
<view:SageFourView/>
</DataTemplate>
<DataTemplate DataType="{x:Type viewModel:SageThreeViewModel}">
<view:SageThreeView/>
</DataTemplate>
<DataTemplate DataType="{x:Type viewModel:ObjectViewModel}">
<view:MyNumberView/>
</DataTemplate>
<Style TargetType="{x:Type Button}">
<Setter Property="Padding" Value="3.5,0" />
<Setter Property="Margin" Value="3.5" />
<Setter Property="MinWidth" Value="80" />
<Setter Property="FontSize" Value="15"/>
<Setter Property="FontWeight" Value="Regular"/>
</Style>
<!-- This Style inherits from the Button style seen above. -->
<Style BasedOn="{StaticResource {x:Type Button}}" TargetType="{x:Type Button}" x:Key="moveNextButtonStyle">
<Setter Property="Content" Value="{x:Static res:Strings.MyAppView_Button_MoveNext}" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=IsOnLastPage}" Value="True">
<Setter Property="Content" Value="{x:Static res:Strings.SageThreeView_Confirm}" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=IsOnCreateSageThreePage}" Value="True">
<Setter Property="Content" Value="{x:Static res:Strings.MyAppView_Button_CreateSageThree}" />
</DataTrigger>
</Style.Triggers>
</Style>
<Style BasedOn="{StaticResource {x:Type Button}}" TargetType="{x:Type Button}" x:Key="cancelButtonStyle">
<Setter Property="Content" Value="{x:Static res:Strings.MyAppView_Button_Cancel}" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=IsOnLastPage}" Value="True">
<Setter Property="Content" Value="{x:Static res:Strings.MyAppView_Button_ExportPDF}" />
</DataTrigger>
</Style.Triggers>
</Style>
<Style BasedOn="{StaticResource {x:Type Button}}" TargetType="{x:Type Button}" x:Key="movePreviousButtonStyle">
<Setter Property="Content" Value="{x:Static res:Strings.MyAppView_Button_MovePrevious}" />
</Style>
<!-- HEADERED CONTENT CONTROL STYLE -->
<Style TargetType="{x:Type HeaderedContentControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type HeaderedContentControl}">
<StackPanel Margin="2,0">
<Grid Margin="1,1,1,12" RenderTransformOrigin="0.5,0.5">
<Rectangle Fill="{DynamicResource {x:Static SystemColors.AppWorkspaceBrushKey}}" Height="3" Margin="10,-4" Opacity="0.6" RadiusX="8" RadiusY="8" VerticalAlignment="Bottom" />
<ContentPresenter ContentSource="Header" TextBlock.FontSize="22" TextBlock.FontWeight="DemiBold" TextBlock.Foreground="Black" HorizontalAlignment="Center" VerticalAlignment="Center" OpacityMask="Black" />
<Grid.Effect>
<DropShadowEffect Opacity="0.1" />
</Grid.Effect>
<Grid.RenderTransform>
<RotateTransform Angle="0" />
</Grid.RenderTransform>
</Grid>
<Grid>
<Rectangle Fill="{TemplateBinding Background}" />
<ContentPresenter ContentSource="Content" />
</Grid>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<DataTemplate x:Key="workflowStepTemplate">
<Border x:Name="bdOuter" BorderBrush="Black" BorderThickness="0,0,1,1" CornerRadius="12" Margin="1,1,1,12" Opacity="0.25" SnapsToDevicePixels="True">
<Border x:Name="bdInner" Background="White" BorderBrush="DarkBlue" BorderThickness="2,2,1,1" CornerRadius="12" Padding="2">
<TextBlock x:Name="txt" Margin="4,0,0,0" FontSize="15" FontWeight="Light" Text="{Binding Path=DisplayName}" />
</Border>
</Border>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Path=IsCurrentPage}" Value="True">
<Setter TargetName="txt" Property="FontWeight" Value="SemiBold" />
<Setter TargetName="bdInner" Property="Background" Value="White" />
<Setter TargetName="bdOuter" Property="Opacity" Value="1" />
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</UserControl.Resources>
<Canvas HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="{Binding ActualWidth, ElementName=configuratorControl}" Height="{Binding ActualHeight, ElementName=configuratorControl}">
<Canvas x:Name="searchCanvas" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Panel.ZIndex="3" Width="{Binding ActualWidth, ElementName=configuratorControl}" Height="{Binding ActualHeight, ElementName=configuratorControl}" Visibility="{Binding SearchBoxVisibility}">
<Grid Panel.ZIndex="4" Width="{Binding ActualWidth, ElementName=searchCanvas}" Height="{Binding ActualHeight, ElementName=searchCanvas}">
<StackPanel Panel.ZIndex="4" Orientation="Vertical" Width="270" Height="70" VerticalAlignment="Center" HorizontalAlignment="Center" >
<StackPanel Orientation="Horizontal" >
<TextBlock Margin="5" FontSize="15" Text="Serial Number:" Width="100" Height="25" TextAlignment="Center" VerticalAlignment="Center" HorizontalAlignment="Center" />
<TextBox Text="{Binding MyNumber, UpdateSourceTrigger=PropertyChanged}" Margin="5" Width="150" Height="25" />
</StackPanel>
<DockPanel HorizontalAlignment="Stretch">
<Button Margin="5" Content="Dismiss" Width="100" HorizontalAlignment="Left" Command="{Binding DismissSearchDraftCommand}"/>
<Button Margin="5" Content="Search" Width="100" HorizontalAlignment="Right" Command="{Binding StartSearchDraftCommand}"/>
</DockPanel>
</StackPanel>
<Rectangle Panel.ZIndex="3" Fill="LightBlue" Width="300" Height="100" />
</Grid>
<Rectangle Panel.ZIndex="2" Fill="LightGray" Opacity="0.4" Canvas.Left="0" Canvas.Top="0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="{Binding ActualWidth, ElementName=configuratorControl}" Height="{Binding ActualHeight, ElementName=configuratorControl}" />
</Canvas>
<Grid Background="#11000000" Margin="1" Panel.ZIndex="2" IsEnabled="{Binding GridResultsEnabled}" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Height="{Binding ActualHeight, ElementName=configuratorControl, Converter={StaticResource percentageConverter}, ConverterParameter=99.5}" Width="{Binding ActualWidth, ElementName=configuratorControl, Converter={StaticResource percentageConverter}, ConverterParameter=99.5}">
<Grid.BitmapEffect>
<BlurBitmapEffect Radius="{Binding GridBoxBlur}" KernelType="Box" />
</Grid.BitmapEffect>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="220" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="60" />
</Grid.RowDefinitions>
<!-- Workflow step listing -->
<HeaderedContentControl Header="{x:Static res:Strings.MyAppView_HeaderSteps}">
<ItemsControl ItemsSource="{Binding Path=Pages}" ItemTemplate="{StaticResource workflowStepTemplate}" />
</HeaderedContentControl>
<Button FontSize="15" Style="{StaticResource HyperLinkButtonStyle}" Margin="20,20,20,140" VerticalAlignment="Bottom" HorizontalAlignment="Center" Content="{x:Static res:Strings.MyAppView_Button_Search_Full}" Command="{Binding Path=OpenSearchFullCommand}"/>
<Button FontSize="15" Style="{StaticResource HyperLinkButtonStyle}" Margin="20,20,20,170" VerticalAlignment="Bottom" HorizontalAlignment="Center" Content="{x:Static res:Strings.MyAppView_Button_Search_Draft}" Command="{Binding Path=OpenSearchDraftCommand}"/>
<Button Margin="20,295,20,20" Command="{Binding Path=StartAgainCommand}" Content="{x:Static res:Strings.SageThreeView_StartAgain}" VerticalAlignment="Top" />
<Image Grid.Column="0" Grid.Row="0" Source="..\Assets\SplashLogo.png" HorizontalAlignment="Center" VerticalAlignment="Bottom" Stretch="None" Margin="20,20,20,20"/>
<!-- CURRENT PAGE AREA -->
<Border Background="White" Grid.Column="1" Grid.Row="0">
<ScrollViewer>
<HeaderedContentControl Content="{Binding Path=CurrentPage}" Header="{Binding Path=CurrentPage.DisplayName}" />
</ScrollViewer>
</Border>
<Border Grid.Column="0" Grid.Row="1" Background="LightGray" Grid.ColumnSpan="2">
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<TextBlock Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="5" Margin="4" FontSize="15" Text="{Binding Path=SageThreeStatus}" VerticalAlignment="Center" Visibility="{Binding Path=ShowSageThreeStatus}" />
<!-- NAVIGATION BUTTONS -->
<Grid Grid.Column="2" Grid.Row="0" Grid.IsSharedSizeScope="True" HorizontalAlignment="Right" >
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Buttons" />
<ColumnDefinition SharedSizeGroup="Buttons" />
<ColumnDefinition SharedSizeGroup="Buttons" />
<ColumnDefinition SharedSizeGroup="Buttons" />
</Grid.ColumnDefinitions>
<Button Grid.Column="1" Grid.Row="0" Command="{Binding Path=MovePreviousCommand}" Style="{StaticResource movePreviousButtonStyle}" />
<Button Grid.Column="2" Grid.Row="0" Command="{Binding Path=MoveNextCommand}" Style="{StaticResource moveNextButtonStyle}" />
<Button Grid.Column="3" Grid.Row="0" Command="{Binding Path=CancelCommand}" Style="{StaticResource cancelButtonStyle}" />
</Grid>
</Grid>
</Border>
</Grid>
</Canvas>
</UserControl>

WPF listbox trigger on empty change default style

I have a part of code that makes it so every listbox in my application shows a message when empty.
<Style TargetType="ListBox" BasedOn="{StaticResource {x:Type ListBox}}">
<Style.Triggers>
<Trigger Property="HasItems" Value="False">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<TextBlock FontSize="20" Foreground="{DynamicResource ValidationErrorBrush}"
TextAlignment="Center" Text="Geen data beschikbaar" Width="Auto" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
When I run the application with it enabled (uncommended) the empty listbox indeed display the message.
But when they are filled the item template is wider than it should be.
This is an example where I use a listbox:
<ListBox x:Name="DataGridTraffic"
Grid.Row="1"
SnapsToDevicePixels="True"
ItemsSource="{Binding Path=TrafficJams}"
ScrollViewer.VerticalScrollBarVisibility="Hidden"
SelectedIndex="-1"
ItemTemplate="{DynamicResource TrafficJamDataTemplateShort}"
AlternationCount="2"
BorderThickness="0"
HorizontalContentAlignment="Stretch"
ItemContainerStyle="{DynamicResource MainListBoxStyle}" />
Does anyone have a clue on what is going on?
Edit:
The first image shows how it is when I enable the trigger.
The second shows the way it is supposed to be.
Edit:
Here is some more as asked for.
This is the Datatemplate for the same thing as the pictures.
<DataTemplate x:Key="BusDeparturesDataTemplateShort" DataType="{x:Type model:BusDeparture}">
<Grid>
<Grid.Style>
<Style TargetType="{x:Type Grid}">
<Setter Property="Background" Value="{DynamicResource ValidationErrorLighterBrush}" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=DelayText}" Value="">
<Setter Property="Background" Value="Transparent" />
</DataTrigger>
</Style.Triggers>
</Style>
</Grid.Style>
<Grid Margin="4,8,4,4">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="60" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock TextAlignment="Center"
FontWeight="Bold"
FontSize="32"
Text="{Binding Path=DeparturePlatform}"
Grid.Column="0" Margin="0,0,5,0"
HorizontalAlignment="Left"
VerticalAlignment="Center">
<TextBlock.Style>
<Style TargetType="{x:Type TextBlock}">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=PlatformChanged}" Value="True">
<Setter Property="Foreground" Value="{DynamicResource ValidationErrorBrush}" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=PlatformChanged}" Value="False">
<Setter Property="Foreground" Value="{DynamicResource PrimaryHueMidBrush}" />
</DataTrigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
<Grid Grid.Column="1">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid>
<StackPanel Orientation="Horizontal"
TextBlock.FontSize="18"
HorizontalAlignment="Left"
VerticalAlignment="Center">
<TextBlock Text="{Binding Path=ServiceNumber}" Width="45" />
<TextBlock Text="{Binding Path=Destination}" />
</StackPanel>
</Grid>
<Grid Grid.Row="1">
<StackPanel Orientation="Horizontal"
TextBlock.FontSize="16"
HorizontalAlignment="Left">
<TextBlock Text="{Binding Path=DepartureTime, StringFormat=HH:mm}" Margin="0,0,4,0" />
<TextBlock Text="{Binding Path=DelayText}" TextAlignment="Right"
Foreground="{DynamicResource ValidationErrorBrush}" />
</StackPanel>
<StackPanel Orientation="Horizontal"
TextBlock.FontSize="16"
HorizontalAlignment="Right">
<TextBlock Text="{Binding Path=Carrier}" TextAlignment="Right"
HorizontalAlignment="Stretch" />
</StackPanel>
</Grid>
</Grid>
</Grid>
</Grid>
</DataTemplate>
And the part where the listbox is in:
<Grid x:Name="MainGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="2*" />
<RowDefinition Height="1*" />
</Grid.RowDefinitions>
<materialDesign:Card Margin="8" Grid.Column="0" Grid.Row="0" VerticalAlignment="Stretch"
materialDesign:ShadowAssist.ShadowDepth="Depth2" x:Name="CardTrain">
...
</materialDesign:Card>
<materialDesign:Card Margin="8" Grid.Row="0" Grid.Column="1" VerticalAlignment="Stretch"
materialDesign:ShadowAssist.ShadowDepth="Depth2" x:Name="CardBus">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50" />
<RowDefinition />
</Grid.RowDefinitions>
<Border BorderBrush="{DynamicResource MaterialDesignDivider}" BorderThickness="0,0,0,1">
<TextBlock Text="Bustijden" Foreground="{DynamicResource PrimaryHueDarkBrush}"
TextAlignment="Center"
FontSize="36" FontWeight="ExtraBold" />
</Border>
<ListBox x:Name="DataGridBus"
Grid.Row="1"
SnapsToDevicePixels="True"
ItemsSource="{Binding Path=BusDepartures}"
ScrollViewer.VerticalScrollBarVisibility="Hidden"
SelectedIndex="-1"
ItemTemplate="{DynamicResource BusDeparturesDataTemplateShort}"
AlternationCount="2"
BorderThickness="0"
HorizontalContentAlignment="Stretch"
ItemContainerStyle="{DynamicResource MainListBoxStyle}"
VerticalAlignment="Top" />
</Grid>
</materialDesign:Card>
<materialDesign:Card Margin="8" Grid.Row="0" Grid.Column="2" VerticalAlignment="Stretch"
materialDesign:ShadowAssist.ShadowDepth="Depth2" x:Name="CardTraffic">
...
</materialDesign:Card>
<materialDesign:Card Margin="8" Grid.Row="0" Grid.Column="3" VerticalAlignment="Stretch"
materialDesign:ShadowAssist.ShadowDepth="Depth2" x:Name="CardTwitter">
...
</materialDesign:Card>
<materialDesign:Card Margin="8" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="4"
VerticalAlignment="Stretch" materialDesign:ShadowAssist.ShadowDepth="Depth2"
x:Name="CardNews">
...
</materialDesign:Card>
</Grid>

I want to see my design that´s in a expander XAML

How can i see my design that´s in the expander in design view? I use VS2015.
<Grid Grid.Row="2" Height="30" Background="{StaticResource HeaderBackground}" Margin="5">
<TextBlock Foreground="{StaticResource HeaderText}" Text="Old Events" FontSize="15" Margin="10,0,0,0" />
<Expander HorizontalAlignment="Left"
VerticalAlignment="Center"
IsExpanded="True"
ExpandDirection="Down"
FlowDirection="RightToLeft">
<Grid FlowDirection="LeftToRight">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid Grid.Row="0" Margin="5,0,5,0" Grid.IsSharedSizeScope="True">
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions >
<ColumnDefinition Width="6"" />
<ColumnDefinition Width="56"/>
<ColumnDefinition Width="18"/>
<ColumnDefinition Width="150" />
<ColumnDefinition Width="150" />
<ColumnDefinition Width="106" />
</Grid.ColumnDefinitions>
<Grid.Resources>
<Style TargetType="TextBlock">
<Setter Property="FontSize" Value="15"/>
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="Margin" Value="0,0,0,2"/>
</Style>
</Grid.Resources>
<TextBlock Grid.Column="0" Text="Id" Margin="0,4,0,6" Grid.ColumnSpan="2"/>
<TextBlock Grid.Row="0" Grid.Column="3" Text="Event" Margin="0,4,0,6"/>
<TextBlock Grid.Row="0" Grid.Column="4" Text="Namn" Margin="0,4,0,6"/>
<TextBlock Grid.Row="0" Grid.Column="5" Text="Tidpunkt" Margin="0,4,0,6"/>
<Border Grid.Column="0" Grid.Row="0" Grid.ColumnSpan="6" BorderThickness="0,0,0,1" BorderBrush="Black"/>
<ListView Grid.Column="0" Grid.ColumnSpan="6" Grid.Row="1" x:Name="OldEventsListView" Style="{x:Null}" ItemsSource="{Binding NotificationEvents}" BorderThickness="0" Width="488" Height="150" HorizontalAlignment="Left" Margin="0,0,-2,-150" Grid.RowSpan="2">
<ListView.Resources>
<DataTemplate DataType="{x:Type local:NotificationEventViewModel+NotificationEvent}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="A" />
<ColumnDefinition SharedSizeGroup="B" />
<ColumnDefinition SharedSizeGroup="B"/>
<ColumnDefinition SharedSizeGroup="C"/>
</Grid.ColumnDefinitions>
<Grid.Resources>
<Style TargetType="TextBlock">
<Setter Property="Height" Value="30"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Center"/>
</Style>
</Grid.Resources>
<Border BorderThickness="0,0,0,1" BorderBrush="LightGray" Grid.ColumnSpan="4" Margin="0,5,0,5" />
<TextBlock Grid.Column="0" Text="{Binding Id}" />
<TextBlock Grid.Column="1" Text="{Binding Event}"/>
<TextBlock Grid.Column="2" Text="{Binding Name}"/>
<TextBlock Grid.Column="3" Text="{Binding TimeStamp}"/>
</Grid>
</DataTemplate>
</ListView.Resources>
</ListView>
</Grid>
<Grid Grid.Row="1" HorizontalAlignment="Right" VerticalAlignment="Bottom">
<Button Background="MidnightBlue" Foreground="White" FontSize="14" FontWeight="Medium" Click="GetTenMoreEvents">
<Button.Content>
<TextBlock Text="10 till"/>
</Button.Content>
</Button>
</Grid>
</Grid>
</Expander>
</Grid>
I thought that IsExpanded="True" would do the thing. But it´s no different. In the picture you can see my design. Here i want my expander to show my "Old Events" listview. So the problem is in Visual Studio, not when I fire my program.
Thanks for the help.

I have now found the solution for my problem.
I had done wrong with my <Grid> and added one too many.
<Grid Grid.Row="2" Height="30" Background="{StaticResource HeaderBackground}" Margin="5">
<TextBlock Foreground="{StaticResource HeaderText}" Text="Old Events" FontSize="15" Margin="10,0,0,0" />
</Grid>
<Grid Grid.Row="3">
<Expander HorizontalAlignment="Left"
VerticalAlignment="Center"
ExpandDirection="Down">
<Grid Margin="5,0,5,0" Grid.IsSharedSizeScope="True">
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions >
<ColumnDefinition Width="80" SharedSizeGroup="A" />
<ColumnDefinition Width="150" SharedSizeGroup="B" />
<ColumnDefinition SharedSizeGroup="B" />
<ColumnDefinition Width="106" SharedSizeGroup="C" />
</Grid.ColumnDefinitions>
<Grid.Resources>
<Style TargetType="TextBlock">
<Setter Property="FontSize" Value="15"/>
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="Margin" Value="0,0,0,2"/>
</Style>
</Grid.Resources>
<TextBlock Grid.Row="0" Grid.Column="0" Text="Id" />
<TextBlock Grid.Row="0" Grid.Column="1" Text="Event"/>
<TextBlock Grid.Row="0" Grid.Column="2" Text="Name"/>
<TextBlock Grid.Row="0" Grid.Column="3" Text="Timestamp"/>
<Border Grid.Column="0" Grid.Row="0" Grid.ColumnSpan="4" BorderThickness="0,0,0,1" BorderBrush="Black"/>
<ListView Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="4" x:Name="OldEventsListView" Style="{x:Null}" ItemsSource="{Binding NotificationEvents}" BorderThickness="0" Width="488" Height="150" HorizontalAlignment="Left" Grid.RowSpan="2">
<ListView.Resources>
<DataTemplate DataType="{x:Type model:NotificationEvent}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="A" />
<ColumnDefinition SharedSizeGroup="B" />
<ColumnDefinition SharedSizeGroup="B"/>
<ColumnDefinition SharedSizeGroup="C"/>
</Grid.ColumnDefinitions>
<Grid.Resources>
<Style TargetType="TextBlock">
<Setter Property="Height" Value="30"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Center"/>
</Style>
</Grid.Resources>
<Border BorderThickness="0,0,0,1" BorderBrush="LightGray" Grid.ColumnSpan="4" Margin="0,5,0,5" />
<TextBlock Grid.Column="0" Text="{Binding Id}" />
<TextBlock Grid.Column="1" Text="{Binding Event}"/>
<TextBlock Grid.Column="2" Text="{Binding Name}"/>
<TextBlock Grid.Column="3" Text="{Binding TimeStamp}"/>
</Grid>
</DataTemplate>
</ListView.Resources>
</ListView>
<Button Grid.Row="2" Grid.Column="3" HorizontalAlignment="Right" VerticalAlignment="Bottom" Background="MidnightBlue" Foreground="White" FontSize="14" FontWeight="Medium" Click="GetTenMoreEvents">
<Button.Content>
<TextBlock Text="10 till"/>
</Button.Content>
</Button>
</Grid>
</Expander>
</Grid>
So I remove <Grid Grid.Row="0" Margin="5,0,5,0" Grid.IsSharedSizeScope="True"> because this was totally wrong. Now the expander works as a charm.

Border is added only to the first text block in WPF

Edit : I realized what the problem is, when I add the border, The second TextBlock sits on top of the first TextBlock. Still have to figure out why this is happening.
Original question:
I have a number of TextBlocks in my xaml. I want to add a border around some textblocks. I tried the following methods.
Method 1:
<Style x:Key="BorderForTextBlock" TargetType="{x:Type Border}">
<Setter Property="BorderThickness" Value="1" />
<Setter Property="BorderBrush" Value="Black" />
</Style>
<TextBlock1../>
<Border Style="{StaticResource BorderForTextBlock}">
<TextBlock2.../>
</Border>
Method 2:
<TextBlock1../> //This is where the border is added.
<Border BorderThickness="1" BorderBrush="Black">
<TextBlock2 ..../> //This is where I want to add the border
</Border>
A border is added only to the first TextBlock in the xaml no matter to which TextBlock I add the border. I don't want the border on the first TextBlock. I have no clue why this is happening.
This is my xaml :
<Grid Background="LightYellow" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" ></ColumnDefinition>
<ColumnDefinition Width="3.5*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="28*" ></RowDefinition>
<RowDefinition Height="120*" ></RowDefinition>
<RowDefinition Height="28*"></RowDefinition>
<RowDefinition Height="74*"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Margin="10,0,5,0" FontWeight="SemiBold" Text="{x:Static res:Resources.source1"/>
<Border BorderBrush="Black" BorderThickness="1">
<TextBlock x:Name="txtBlock1" FormatTest:FormattedTextBehavior.FormattedText="{Binding Path= content1}" Margin="0,0,0,0" Grid.Row="0" Grid.Column="1" TextWrapping="Wrap"/>
</Border>
<TextBlock Grid.Row="1" Margin="10,0,5,0" FontWeight="SemiBold" Text="{x:Static res:Resources.source2}"/>
<RichTextBox Background="LightYellow" Margin="0,0,0,0" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.CanContentScroll="True" Grid.Row="1" Grid.Column="1" IsReadOnly="True" >
<FlowDocument>
<Paragraph>
<Run Text="{Binding content2, Mode=TwoWay}"/>
</Paragraph>
</FlowDocument>
</RichTextBox>
<TextBlock Grid.Row="2" Margin="10,0,5,0" FontWeight="SemiBold" Text="{x:Static res:Resources.source3"/>
<TextBlock Text="{Binding content3, Mode=TwoWay}" Margin="0,0,0,0" Grid.Row="2" Grid.Column="1" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.CanContentScroll="True" TextWrapping="Wrap"/>
<TextBlock Grid.Row="3" Margin="10,0,5,0" FontWeight="SemiBold" Text="{x:Static res:Resources.source4}"/>
<TextBox Text="{Binding content4, Mode=TwoWay}" Margin="0,0,0,0" Grid.Row="3" Grid.Column="1" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto"
ScrollViewer.CanContentScroll="True" TextAlignment="Left" TextWrapping="Wrap" Background="LightYellow" IsReadOnly="True"/>
</Grid>

instead of
<Border BorderBrush="Black" BorderThickness="1">
<TextBlock x:Name="txtBlock1" FormatTest:FormattedTextBehavior.FormattedText="{Binding Path= content1}" Margin="0,0,0,0" Grid.Row="0" Grid.Column="1" TextWrapping="Wrap"/>
</Border>
Have
<Border Grid.Row="0" Grid.Column="1" BorderBrush="Black" BorderThickness="1">
<TextBlock x:Name="txtBlock1" FormatTest:FormattedTextBehavior.FormattedText="{Binding Path= content1}" Margin="0,0,0,0" TextWrapping="Wrap"/>
</Border>
This should solve the issue with placement of text blocks
This is how it looks at my end
Try this and let us know

You can use style with trigger and put the style either in windows resources or app resources depending upon scope you want
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Grid.Resources>
<Style x:Key="NotCalledBorder" TargetType="{x:Type Border}">
<Setter Property="BorderThickness" Value="1" />
<Setter Property="BorderBrush" Value="Black" />
<Setter Property="Height" Value="20"/>
<Setter Property="Width" Value="30"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
</Style>
<Style TargetType="TextBlock">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="TextDecorations" Value="Underline" />
</Trigger>
</Style.Triggers>
</Style>
</Grid.Resources>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Border Style="{StaticResource NotCalledBorder}" Grid.Row="0">
<TextBlock Text="test1" Grid.Row="0" OpacityMask="Black">
</TextBlock>
</Border>
<TextBlock Text="test2" Grid.Row="1"></TextBlock>
<Border Style="{StaticResource NotCalledBorder}" Grid.Row="2">
<TextBlock Text="test3" Grid.Row="2" OpacityMask="Black"></TextBlock>
</Border>
<TextBlock Text="test4" Grid.Row="3"></TextBlock>
</Grid>
</Window>
Conditional style in WPF. Adding border to two textblocks only. You can apply style and add to as many as you want

bind datatemplate textblock tag

I have code:
<DataTemplate x:Key="SelectedTime">
<Border BorderBrush="DimGray" BorderThickness="4" Margin="-3,-2,-2,-4" Height="35">
<Grid Width="61" Height="31" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Background="LightGray" >
<Grid.RowDefinitions>
<RowDefinition Height="14"/>
<RowDefinition Height="15"/>
</Grid.RowDefinitions>
<Grid Background="LightBlue" Grid.Row="0" Margin="0,0,0,0">
<TextBlock TextBlock.FontSize="12" HorizontalAlignment="Left" VerticalAlignment="Stretch" TextAlignment="Center" Margin="6,-2,0,0"
Text="{TemplateBinding Tag}"/>
</Grid>
<TextBlock Grid.Row="1" Text="{TemplateBinding Content}" HorizontalAlignment="Left" VerticalAlignment="Stretch" TextAlignment="Center" TextBlock.FontSize="10" Height="12" Margin="16,-2,0,0"/>
</Grid>
</Border>
</DataTemplate>
<Style x:Key="LowerRadioButton"
TargetType="RadioButton"
BasedOn="{StaticResource {x:Type ToggleButton}}">
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="Background" Value="Transparent"/>
<Style.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="ContentTemplate" Value="{StaticResource SelectedTime}" />
</Trigger>
<Trigger Property="IsChecked" Value="False">
<Setter Property="ContentTemplate" Value="{StaticResource OrdinaryTime}" />
</Trigger>
</Style.Triggers>
</Style>
</UserControl.Resources>
<Grid Height="35" x:Name="testGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="60"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="20"/>
<RowDefinition Height="15"/>
</Grid.RowDefinitions>
<RadioButton Style="{StaticResource LowerRadioButton}" Content="12.10" Tag="1" Grid.Column="0" Grid.RowSpan="2" />
<RadioButton Style="{StaticResource LowerRadioButton}" Content="13.10" Tag="2" Grid.Column="1" Grid.RowSpan="2" />
<RadioButton Style="{StaticResource LowerRadioButton}" Content="14.10" Tag="3" Grid.Column="2" Grid.RowSpan="2" IsChecked="True" />
</Grid >
I need to bind to tag in my DataTemplate. Tried through construnction "{Binding Path=Tag, RelativeSource={RelativeSource TemplatedParent}}", but it disn't bind, shows the empty text. What am I doing wrong?

You should know that TemplateBinding can be used only in ControlTemplate, not DataTemplate. So you can try something like this as a workaround:
<TextBlock TextBlock.FontSize="12" HorizontalAlignment="Left"
VerticalAlignment="Stretch" TextAlignment="Center" Margin="6,-2,0,0"
Text="{Binding Tag,
RelativeSource={RelativeSource AncestorType=RadioButton}}"/>