Implement DataTemplate DependencyProperty in UserControl

I'm trying to make an intertia touch scrolling list in a UserControl in Silverlight 4 using Expression Blend 4. I've already made the dependency properties in my UserControl which i want to work like the ListBox does. ItemSource is the list of objects i want to show in my list and datatemplate is the way it should be shown.

How do i deal with these properties inside my UserControl? I have a StackPanel where all the datatemplates should be added showing the data ofc.

How do i apply the data in my IEnumerable to the DataTemplate when looping through the ItemSource to add them to the list (StackPanel).

        public static readonly DependencyProperty ItemsSourceProperty = DependencyProperty.Register("ItemsSource", typeof(IEnumerable), typeof(InertiaScrollBox), null); 
    public IEnumerable ItemsSource
    {
        get{ return (IEnumerable)GetValue(ItemsSourceProperty); }
        set{ SetValue(ItemsSourceProperty, value); }
    }

    public static readonly DependencyProper开发者_开发知识库ty ItemTemplateProperty = DependencyProperty.Register("ItemTemplate", typeof(DataTemplate), typeof(InertiaScrollBox), null);
    public DataTemplate ItemTemplate
    {
        get { return (DataTemplate)GetValue(ItemTemplateProperty); }
        set { SetValue(ItemTemplateProperty, value); }
    }

This was kinda hard to explain but hope you understand otherwise please ask. Thanks in advance

Dependency properties are rather useless if to not handle their changes. At first you should add PropertyChanged callbacks. In my example I add them inline and call the UpdateItems private method.

public static readonly DependencyProperty ItemsSourceProperty =
DependencyProperty.Register("ItemsSource", typeof(IEnumerable), typeof(InertiaScrollBox), 
    new PropertyMetadata((s, e) => ((InertiaScrollBox)s).UpdateItems()));

public static readonly DependencyProperty ItemTemplateProperty = 
DependencyProperty.Register("ItemTemplate", typeof(DataTemplate), typeof(InertiaScrollBox), 
    new PropertyMetadata((s, e) => ((InertiaScrollBox)s).UpdateItems()));

Then you can call the LoadContent method of the DataTemplate class and set an item from the ItemsSource as the DataContext to the returned visual element:

private void UpdateItems()
{
    //Actually it is possible to use only the ItemsSource property,
    //but I would rather wait until both properties are set
    if(this.ItemsSource == null || this.ItemTemplate == null)
        return;

    foreach (var item in this.ItemsSource)
    {
        var visualItem = this.ItemTemplate.LoadContent() as FrameworkElement;
        if(visualItem != null)
        {
            visualItem.DataContext = item;
            //Add the visualItem object to a list or StackPanel
            //...
        }
    }
}