Horizontally grouped ListView in Windows Store apps - xaml

Question

I want the groups in my grouped ListView to show horizontally instead of vertically. I tried this solution, but the groups are still under each other instead of next to each other. Arranging ListView items Horizontally
Here's my XAML (this is the original, unmodified):
<ListView Name="slotlist"
ItemsSource="{Binding Source={StaticResource cvsDelivery}}"
Margin="0,0,10,0"
IsItemClickEnabled="True"
ItemClick="onSlotBooked">
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment Value="Stretch"/>
</Style>
</ListView.ItemContainerStyle>
<ListView.ItemTemplate>
<DataTemplate>
<Grid Width="{Binding ActualWidth, ElementName=grRoot}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding timeRange}" Grid.Column="0" FontWeight="Bold"
Margin="10,0,0,0"
Foreground="{Binding Fontcolor}"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Style="{StaticResource BaseTextBlockStyle}"/>
<TextBlock Text="{Binding slotPrice}" Grid.Column="1" FontWeight="Bold"
Margin="0,0,20,0"
Foreground="{Binding Fontcolor}"
HorizontalAlignment="Right"
VerticalAlignment="Center"
Style="{StaticResource BaseTextBlockStyle}"/>
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
<ListView.GroupStyle>
<GroupStyle HidesIfEmpty="True">
<GroupStyle.HeaderTemplate>
<DataTemplate>
<TextBlock
Text="{Binding date}"
Foreground="#FF005299"/>
</DataTemplate>
</GroupStyle.HeaderTemplate>
</GroupStyle>
</ListView.GroupStyle>
</ListView>

Answer 1

To get the ListView to be shown horizontally you can modify the ItemsPanel, like so:
<ListView>
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsStackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
</ListView>