itemscontrol nested templates wpf code example

Example: wpf nested itemscontrols

//<!--WPF: this nested ItemsControl allows for placement of items on a screen based on bound properties-->
//<!--A key factor to make this work is the Content="{Binding}" statement on line 33, as this links the items to the ItemControl's datacontext-->
//<!--Collections must be of type ObservableCollection<T> for XAML to register updates to the collection-->

<ItemsControl x:Name="outerIC" ItemsSource="{Binding Source={x:Static namespace:Class.CollectionProperty}}">
    <ItemsControl.ItemsPanel>
        <ItemsPanelTemplate>
            <Canvas IsItemsHost="True"/>
        </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>
    <ItemsControl.ItemContainerStyle>
        <Style>
            <Setter Property="Canvas.Top" Value="0" />
            <Setter Property="Canvas.Left" Value="0" />
        </Style>
    </ItemsControl.ItemContainerStyle>
    <ItemsControl.ItemTemplate>
        <DataTemplate>
            <ItemsControl ItemsSource="{Binding SomeCollectionPropertyInClass}">
                <ItemsControl.ItemsPanel>
                    <ItemsPanelTemplate>
                        <Canvas IsItemsHost="True"/>
                    </ItemsPanelTemplate>
                </ItemsControl.ItemsPanel>
                <ItemsControl.ItemContainerStyle>
                    <Style>
                        <Setter Property="Canvas.Top" Value="0" />
                        <Setter Property="Canvas.Left" Value="0" />
                    </Style>
                </ItemsControl.ItemContainerStyle>
                <ItemsControl.ItemTemplate>
                    <DataTemplate>
                        <ContentControl Content="{Binding}">
                            <ContentControl.Style>
                                <Style TargetType="ContentControl">
                                    <Setter Property="ContentTemplate">
                                        <Setter.Value>
                                            <DataTemplate>
                                                <Canvas>
                                                    <Button Canvas.Left="{Binding X}"
                                                            Canvas.Top="{Binding Y}"/>
                                                </Canvas>
                                            </DataTemplate>
                                        </Setter.Value>
                                    </Setter>
                                </Style>
                            </ContentControl.Style>
                        </ContentControl>
                    </DataTemplate>
                </ItemsControl.ItemTemplate>
            </ItemsControl>
        </DataTemplate>
    </ItemsControl.ItemTemplate>
</ItemsControl>