<ItemsControl

    x:Class="Client.Framework.TijdslijnVisualizer.TijdslijnVisualisatie"

    xmlns:cf="clr-namespace:Client.Framework.TijdslijnVisualizer"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    >

  <ItemsControl.Style>

    <Style TargetType="{x:Type ItemsControl}">

      <Setter Property="Template">

        <Setter.Value>

          <ControlTemplate TargetType="{x:Type ItemsControl}">

            <DockPanel LastChildFill="True">

              <Slider Name="slider" DockPanel.Dock="Right" Minimum="1" Maximum="10" Value="1" Orientation="Vertical" />

              <ScrollViewer Name="scroller" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" CanContentScroll="False">

                <cf:TijdslijnPanel Name="tijdslijnpanel"  IsItemsHost="True" zoomFactor="{Binding ElementName=slider, Path=Value }" />

              </ScrollViewer>

            </DockPanel>

          </ControlTemplate>

        </Setter.Value>

      </Setter>

    </Style>

  </ItemsControl.Style>

</ItemsControl>

In the code behind for this class you will not be able to simply get the to these elements with ease. Or at least, not until I realized that these elements were not set yet until the template was actually applied. If you try to find them after that, you will find them through the VisualTreeHelper.GetChild or a simple .FindName: