I have a slightly extraordinary request ;-)
I'd like to develop an ItemsControl with a "Previous" Control and a "Next" Control. Like this bound to an arbitrary ViewModel:
<controls:PagedItemsControl ItemsSource="{Binding Items}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<UniformGrid Columns="5" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate DataType="system:String">
<Border Background="Gray" Margin="5">
<TextBlock Text="{Binding}" Foreground="White" VerticalAlignment="Center" HorizontalAlignment="Center" />
</Border>
</DataTemplate>
</ItemsControl.ItemTemplate>
<controls:PagedItemsControl.PreviousControl>
<Button Content="Previous" Command="{Binding PreviousCommand}" />
</controls:PagedItemsControl.PreviousControl>
<controls:PagedItemsControl.NextControl>
<Button Content="Next" Command="{Binding NextCommand}" />
</controls:PagedItemsControl.NextControl>
</controls:PagedItemsControl>
In the example I passed 2 buttons controlled by the ViewModel's commands. It would be awesome if somebody could tell me how to listen to the Control.IsEnable state and show the PreviousControl as first item if enable and the the NextControl as last item if enable.
Thank you
Have a look at the following XAML. We cannot add elements to ItemsPanel while using ItemsSource. But we may try to build a tricky collection which consists of ItemsSource and additional elements. Unfortunately CollectionContainer unable to bound to Items directly. Lucky that good guys already found a solution for this case.
<Grid>
<Grid.Resources>
<BooleanToVisibilityConverter x:Key="BoolToVisibilityConverter"/>
</Grid.Resources>
<TextBlock Name="TrickyBinder"
Tag="{Binding Items}"
Visibility="Collapsed"/>
<ItemsControl>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<UniformGrid Columns="5" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate DataType="system:String">
<Border Background="Gray" Margin="5">
<TextBlock Text="{Binding}" Foreground="White" VerticalAlignment="Center" HorizontalAlignment="Center" />
</Border>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsSource>
<CompositeCollection>
<CollectionContainer>
<CollectionContainer.Collection>
<col:ArrayList>
<Button Content="Previous" Command="{Binding PreviousCommand}" Visibility="{Binding Path=IsEnabled,RelativeSource={RelativeSource Self},Converter={StaticResource BoolToVisibilityConverter}}" />
</col:ArrayList>
</CollectionContainer.Collection>
</CollectionContainer>
<CollectionContainer Collection="{Binding Path=Tag,Source={x:Reference TrickyBinder}}"/>
<CollectionContainer>
<CollectionContainer.Collection>
<col:ArrayList>
<Button Content="Next" Command="{Binding NextCommand}" Visibility="{Binding Path=IsEnabled,RelativeSource={RelativeSource Self},Converter={StaticResource BoolToVisibilityConverter}}" />
</col:ArrayList>
</CollectionContainer.Collection>
</CollectionContainer>
</CompositeCollection>
</ItemsControl.ItemsSource>
</ItemsControl>
</Grid>
Hope this helps!
Related
I'm filling a two WrapPanel with Buttons via DataTemplate but they all align vertically for some reason, what exactly is wrong here?
It doesn't matter if I set the Orientation property or not.
XAML:
<UserControl x:Class="DashboardClient.View.DashboardView"
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"
mc:Ignorable="d"
Width="940" Height="640">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="400" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<DockPanel Grid.Column="0" Height="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Grid}},Path=ActualHeight}">
<ScrollViewer VerticalScrollBarVisibility="Auto" DockPanel.Dock="Top" Height="520" Margin="5">
<WrapPanel>
<ItemsControl ItemsSource="{Binding Dashboards}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button Width="120" Height="120" Margin="5" Command="{Binding DataContext.DashboardCommand, RelativeSource={RelativeSource AncestorType=ItemsControl}}" CommandParameter="{Binding}">
<TextBlock TextWrapping="Wrap" HorizontalAlignment="Center" Text="{Binding Name}" />
</Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
<Button Width="120" Height="120" Margin="5" Command="{Binding DashboardAddCommand}" Content="+" FontSize="100" />
</WrapPanel>
</ScrollViewer>
<StackPanel Height="100" Margin="5">
<Label>Dashboardname:</Label>
<TextBox Text="{Binding SelectedDashboard.Name}" />
<RadioButton Content="Sichtbar" Margin="0 10" IsChecked="{Binding SelectedDashboard.IsVisibleOnDashboard, UpdateSourceTrigger=PropertyChanged}" />
<Button Content="Dashboard löschen" Command="{Binding DashboardRemoveCommand}" />
</StackPanel>
</DockPanel>
<StackPanel Grid.Column="1" Margin="0">
<ScrollViewer VerticalScrollBarVisibility="Auto" Height="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type StackPanel}},Path=ActualHeight}">
<WrapPanel>
<ItemsControl ItemsSource="{Binding SelectedDashboard.DashboardItems}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button Width="200" Height="120" Command="{Binding DataContext.DashboardItemCommand, RelativeSource={RelativeSource AncestorType=ItemsControl}}" CommandParameter="{Binding}" Margin="10">
<TextBlock TextWrapping="Wrap" HorizontalAlignment="Center" Text="{Binding Name}" />
</Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
<Button Width="200" Height="120" Content="+" FontSize="100" Command="{Binding DashboardItemAddCommand}" Margin="10" />
</WrapPanel>
</ScrollViewer>
</StackPanel>
</Grid>
</UserControl>
This is what the WrapPanel looks like:
The Add Button is always cut off somehow, too.
If you want to put the children of the ItemsControl horizontally in a WrapPanel, you need to tell the ItemsControl to use a WrapPanel for its children via an ItemsPanelTemplate:
<WrapPanel Orientation="Horizontal">
<ItemsControl ItemsSource="{Binding Dashboards}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button
Width="120"
Height="120"
Margin="5"
Command="{Binding DataContext.DashboardCommand, RelativeSource={RelativeSource AncestorType=ItemsControl}}"
CommandParameter="{Binding}"
>
<TextBlock
TextWrapping="Wrap"
HorizontalAlignment="Center"
Text="{Binding Name}"
/>
</Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
<Button
Width="120"
Height="120"
Margin="5"
VerticalAlignment="Top"
Command="{Binding DashboardAddCommand}"
Content="+"
FontSize="100"
/>
</WrapPanel>
I don't know what you want to do with the button. My guess is that you want it to the right of the ItemsControl, and I aligned it to the top because that makes more sense to me.
Instead of
<ScrollViewer>
<WrapPanel>
<ItemsControl ItemsSource="{Binding Dashboards}">
<ItemsControl.ItemTemplate ... />
</ItemsControl>
<Button Content="+" ... />
</WrapPanel>
</ScrollViewer>
You can use
<ScrollViewer>
<ItemsControl ItemsSource="{Binding Dashboards}">
<ItemsControl.ItemTemplate ... />
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
<Button Content="+" ... /> <!-- A -->
</ScrollViewer>
<Button Content="+" ... /> <!-- B -->
WrapPanel is moved inside ItemsControl to layout dashboards.
You can put button somewhere else (same as #EdPlunkett I don't have a good idea where to put it): A - will let you to scroll button together with dashboards and B will keep button fixed, disregards scrolling.
I read here some posts on that issue and still didn't found a solution to my problem, also I have used this guide.
My ListBox still showing as a long list with a ScrollViewer, and not Horizontally as I refer to.
XAML: EDITED!
<DockPanel LastChildFill="False" IsEnabled="{Binding IsWindowEnabled}" MinWidth="724" Background="Red">
<!-- save notifictaion popup -->
<Label DockPanel.Dock="Top" Margin="10" FontSize="15" Foreground="Green" Content="{x:Static ml:MultiLang._123}" x:Name="ML_0003" />
<StackPanel DockPanel.Dock="Top" Orientation="Horizontal" Margin="10 0">
<Label Content="Select Constant Type" Margin="0 0 10 0" />
<ComboBox Width="150" ItemsSource="{Binding ComboNames}" DisplayMemberPath="Value" SelectedValuePath="Key" SelectedValue="{Binding SelectedComboType}" />
</StackPanel>
<ListBox DockPanel.Dock="Top" BorderBrush="Black" BorderThickness="1" HorizontalAlignment="Stretch" Margin="10" ItemsSource="{Binding Combos}" SelectedItem="{Binding SelecetedCombo}" ScrollViewer.CanContentScroll="False" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="0 0 0 5">
<Label Content="{Binding Index}" Margin="10 0" Width="20" />
<TextBox Width="150" Margin="0" IsEnabled="{Binding IsEditable}" Text="{Binding Path=Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</DockPanel>
But Still my List Looks like that:
IMAGE: EDITED No.2
What I'm doing wrong?
Thank you very much!
Please try to change the ItemPanel from
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
To
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
Ignore the above suggestion.
EDIT
Could you please try to give a background color to internal stack panel you have used in DataTemplate? like
<DataTemplate>
<StackPanel Background="Blue" Orientation="Horizontal" Margin="0 0 0 5">
<Label Content="{Binding Index}" Margin="10 0" Width="20" />
<TextBox Width="150" Margin="0" IsEnabled="{Binding IsEditable}" Text="{Binding Path=Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" />
</StackPanel>
</DataTemplate>
It will give you an idea that how stackpanel is taking the space in ListBox items. Then we can try to adjust the width of each ListBoxItem
EDIT 2
This is what I see on my side
and XAML is
<Window x:Class="WPF_StackOverFlow_Lab.Test1"
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"
xmlns:local="clr-namespace:WPF_StackOverFlow_Lab"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<DockPanel LastChildFill="False" IsEnabled="{Binding IsWindowEnabled}" MinWidth="724" Background="Red">
<!-- save notifictaion popup -->
<Label DockPanel.Dock="Top" Margin="10" FontSize="15" Foreground="Green" Content="Constants Configuration" x:Name="ML_0003" />
<StackPanel DockPanel.Dock="Top" Orientation="Horizontal" Margin="10 0">
<Label Content="Select Constant Type" Margin="0 0 10 0" />
<ComboBox Width="150" ItemsSource="{Binding ComboNames}" DisplayMemberPath="Value" SelectedValuePath="Key" SelectedValue="{Binding SelectedComboType}" />
</StackPanel>
<ListBox DockPanel.Dock="Top" BorderBrush="Black" BorderThickness="1" HorizontalAlignment="Stretch" Margin="10" ItemsSource="{Binding Combos}" SelectedItem="{Binding SelecetedCombo}" ScrollViewer.CanContentScroll="False" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="0 0 0 5">
<Label Content="{Binding Index}" Margin="10 0" Width="20" />
<TextBox Width="150" Margin="0" IsEnabled="{Binding IsEditable}" Text="{Binding Path=Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</DockPanel>
The problem is that you set a width of 220 in your listbox, and since the items are in wrap panel, they will show vertically, try to increase the width
<ListBox Width="220" [OTHER PROPERTIES]>
Increase the width
<ListBox Width="520" [OTHER PROPERTIES]>
Or if your design allows it, delete the width property and let the listbox fill it's parent
By default, ListBox uses a panel called VirtualizingStackPanel to arrange its items
vertically.
<ListBox>
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
I have the following piece of code
<ItemsControl x:Name="ItemsControl" ItemsSource="{Binding Offers}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical"></StackPanel>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<wpf:Card Padding="32" Margin="5" d:DataContext="{d:DesignData }">
<StackPanel Margin="0,0,0,-30" Height="107">
<TextBlock
Style="{DynamicResource MaterialDesignTitleTextBlock}">
<Run Text="Offer " />
</TextBlock>
<TextBlock Text="{Binding CarDescription}" />
<Separator Height="1" Visibility="Hidden" />
<Button Content="Select"
Width="72"
VerticalAlignment="Bottom"
HorizontalAlignment="Right"
Margin="0,20,0,0"
Command="{Binding SelectOfferCommand}"/>
</StackPanel>
</wpf:Card>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
This produces a bunch of repeated boxes, every has a button. Every time i click the button i want to access current box index (from ItemsControl's ItemsSource) and pass it as a command parameter. Is it possible to do it?
You can pass the current Index of an ItemsControl using the AlterationIndex.
See more info here
Example:
<ItemsControl x:Name="ItemsControl"
ItemsSource="{Binding Offers}"
AlternationCount="1000">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical"></StackPanel>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<wpf:Card Padding="32" Margin="5" d:DataContext="{d:DesignData }">
<StackPanel Margin="0,0,0,-30" Height="107">
<TextBlock
Style="{DynamicResource MaterialDesignTitleTextBlock}">
<Run Text="Offer " />
</TextBlock>
<TextBlock Text="{Binding CarDescription}" />
<Separator Height="1" Visibility="Hidden" />
<Button Content="Select"
Width="72"
VerticalAlignment="Bottom"
HorizontalAlignment="Right"
Margin="0,20,0,0"
Command="{Binding SelectOfferCommand}"
CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ContentPresenter}}, Path=(ItemsControl.AlternationIndex)}"/>
</StackPanel>
</wpf:Card>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
May be it will be suitable for you to add index property to each Offer while creating Offers and send this index OnSelectOfferCommand. It will be much easier
ps I think i must explain my answer: My sugestion is not only easier in realisation, but also it is a good practice to seperate busines logic from UI. In this case if UI will be changed, changes will not effect whole ordering process
Ok, this is driving me nuts! I have spent a good half of my day working on this problem. I am using a XAML based Windows 8.1 app, and essentially I am trying to implement some drag and drop functionality between groups in a GridView. So far everything has been working, except when I try to "drop" an item into a new group. After way to much time, I have narrowed it down to the "drop" event not being fired for the GroupStyle.Panel VariableSizedWrapGrid. I was trying to follow something along the lines of this webpage.
I for the life of me cannot figure out why it won't fire. I have tried testing other drop events throughout my gridview, and they all seem to be working as expected.
Below is the code I currently have in place:
<GridView
x:Name="itemGridView"
AutomationProperties.AutomationId="ItemGridView"
AutomationProperties.Name="Grouped Items"
Grid.RowSpan="2"
Padding="116,137,40,46"
ItemsSource="{Binding Source={StaticResource groupedItemsViewSource}, Mode=TwoWay}"
SelectionMode="None"
CanDragItems="True"
DragItemsStarting="itemGridView_DragItemsStarting"
IsSwipeEnabled="true"
IsItemClickEnabled="True"
ItemClick="ItemView_ItemClick">
<GridView.ItemTemplate>
<DataTemplate>
<VariableSizedWrapGrid HorizontalAlignment="Left" Width="250" Height="250">
<Border Background="{ThemeResource ListViewItemPlaceholderBackgroundThemeBrush}">
<Image Source="{Binding Image}" Stretch="UniformToFill" AutomationProperties.Name="splash"/>
</Border>
<StackPanel VerticalAlignment="Bottom" Background="{ThemeResource ListViewItemOverlayBackgroundThemeBrush}">
<TextBlock Text="{Binding Path=Name }" Foreground="{ThemeResource ListViewItemOverlayForegroundThemeBrush}" Style="{StaticResource TitleTextBlockStyle}" Height="60" Margin="15,0,15,0"/>
</StackPanel>
</VariableSizedWrapGrid>
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid GroupPadding="0,0,70,0"/>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<GridView.GroupStyle>
<GroupStyle HidesIfEmpty="False">
<GroupStyle.HeaderTemplate>
<DataTemplate>
<VariableSizedWrapGrid Margin="0,0,0,2">
<Button Foreground="{ThemeResource ApplicationHeaderForegroundThemeBrush}"
AutomationProperties.Name="Group Title"
Style="{StaticResource TextBlockButtonStyle}"
Click="Button_Click">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Name}" Margin="0,-11,10,10" Style="{StaticResource SubheaderTextBlockStyle}" TextWrapping="NoWrap" />
<TextBlock Text="{StaticResource ChevronGlyph}" FontFamily="Segoe UI Symbol" Margin="0,-11,0,10" Style="{StaticResource SubheaderTextBlockStyle}" TextWrapping="NoWrap" />
</StackPanel>
</Button>
</VariableSizedWrapGrid>
</DataTemplate>
</GroupStyle.HeaderTemplate>
<GroupStyle.Panel>
<ItemsPanelTemplate>
<VariableSizedWrapGrid Drop="VariableSizedWrapGrid_Drop" AllowDrop="True"/>
</ItemsPanelTemplate>
</GroupStyle.Panel>
</GroupStyle>
</GridView.GroupStyle>
</GridView>
I really hope someone out there can see my error! I'm sure it is something simple, but I just need someone to point out the obvious. :)
Had the same problem, then found this example:
How to drag item between groups in grouped gridview
I tried to use StackPanel as ItemsPanel of GridView, worked for me. Try to use StackPanel instead of ItemsWrapGrid for your GridView.
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
Still can't understand this behavior, any ideas?
I'm trying to create a custom ListBox. That receives a list with three properties:
SubjectName
Problems
AverageScore
The property Problems is another list which contains several Problem class. This is the data template I'm creating.
<DataTemplate x:Key="SubjectDataTemplate">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="100"/>
</Grid.ColumnDefinitions>
<StackPanel Margin="5">
<StackPanel Orientation="Horizontal" TextBlock.FontWeight="Bold" >
<TextBlock Text="{Binding Path=ProblemNumber, FallbackValue=ProblemNumber}" />
<TextBlock Text="{Binding Path=SubjectName, FallbackValue=SubjectName}" Padding="3,0,0,0"/>
</StackPanel>
<TextBlock Text="{Binding Path=AverageScore, FallbackValue=AverageScore}" />
<ItemsControl ItemsSource="{Binding Problems}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<StackPanel Background="Aqua" Orientation="Vertical" Margin="5">
<Rectangle Fill="Red" Height="20" Width="20" />
</StackPanel>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
<!--<TextBlock Text="{Binding Path=Role, FallbackValue=Role}" />-->
</StackPanel>
</Grid>
</DataTemplate>
But I've got a problem trying to show Problems data. I'm trying to show each element from Problems list in a stack panel with ortientation horizontal, but I get each stack panel separated.
I need to put the red rectangles inside the stack control. For example, the ten rectangles from Times Tables should be in one only stack panel.
UPDATE 1:
Something like this:
According to the graph, the first stack panel (background aqua) must contain 10 red rectangles.
UPDATE 2:
I'm verifying showing the data from problem in a textBlock and it works:
<ItemsControl ItemsSource="{Binding Problems}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding IsCorrect}" />
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" Background="Gainsboro" Margin="5" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
You need to use nested ItemsControls - One for the Vertical list and one for the Horizontal List.
<ItemsControl ItemsSource="{Binding Problems}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<ItemsControl ItemsSource="{Binding Problems}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Rectangle Height="20" Width="20" Margin="1,0">
<Rectangle.Style>
<Style TargetType="{x:Type Rectangle}">
<Setter Property="Fill" Value="Red" />
<Style.Triggers>
<DataTrigger Binding="{Binding IsCorrect}" Value="True">
<Setter Property="Fill" Value="Blue" />
</DataTrigger>
</Style.Triggers>
</Style>
</Rectangle.Style>
</Rectangle>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Background="Aqua" Margin="5" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
In your ItemsControl.ItemsPanel make the StackPanel orientation Horizoantal
Is this what you are looking for?
UPDATED:
<DataTemplate x:Key="SubjectDataTemplate">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="100"/>
</Grid.ColumnDefinitions>
<StackPanel Margin="5">
<StackPanel Orientation="Horizontal" TextBlock.FontWeight="Bold" >
<TextBlock Text="{Binding Path=ProblemNumber, FallbackValue=ProblemNumber}" />
<TextBlock Text="{Binding Path=SubjectName, FallbackValue=SubjectName}" Padding="3,0,0,0"/>
</StackPanel>
<TextBlock Text="{Binding Path=AverageScore, FallbackValue=AverageScore}" />
<ItemsControl ItemsSource="{Binding Problems}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel>
<Rectangle Fill="Red" Height="20" Width="20" />
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Background="Aqua" Orientation="Horizontal" Margin="5"/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</StackPanel>
</Grid>
</DataTemplate>