ItemsControl Class

<Grid>
  <Grid.Resources>
    <src:Tasks x:Key="myTodoList"/>
  </Grid.Resources>  
  <ItemsControl Margin="10" Width="400" 
            ItemsSource="{Binding Source={StaticResource myTodoList}}">
    <!--Use the Template property to specify a ControlTemplate to define
    the appearance of an ItemsControl. The ItemsPresenter uses the specified
    ItemsPanelTemplate (defined below) to layout the items. If an
    ItemsPanelTemplate is not specified, the default is used. (For ItemsControl,
    the default is an ItemsPanelTemplate that specifies a StackPanel that
    arranges items vertically.)-->
    <ItemsControl.Template>
      <ControlTemplate TargetType="ItemsControl">
        <Border BorderBrush="Aqua" BorderThickness="1" CornerRadius="15">
          <ItemsPresenter/>
        </Border>
      </ControlTemplate>
    </ItemsControl.Template>
    <!--Use the ItemsPanel property to specify an ItemsPanelTemplate
    that defines the panel that is used to hold the generated items.
    In other words, use this property if you want to affect
    how the items are laid out.-->
    <ItemsControl.ItemsPanel>
      <ItemsPanelTemplate>
        <StackPanel Orientation="Horizontal"/>
      </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>
    <!--Use the ItemTemplate to set a DataTemplate to define
    the appeatance of the data objects. This DataTemplate
    specifies that each data object appears with the Proriity
    and TaskName on top of a silver ellipse.-->
    <ItemsControl.ItemTemplate>
      <DataTemplate>
        <Grid Width="70" Margin="5">
          <Ellipse Fill="Silver"/>
          <StackPanel>
            <TextBlock Margin="3,3,3,0" FontSize="12" HorizontalAlignment="Center"
                   Text="{Binding Path=Priority}"/>
            <TextBlock Margin="3,0,3,7" FontSize="12" HorizontalAlignment="Center"
                   Text="{Binding Path=TaskName}"/>
          </StackPanel>
        </Grid>
      </DataTemplate>
    </ItemsControl.ItemTemplate>
  </ItemsControl>
</Grid>

public class Task : INotifyPropertyChanged
{
    private string name;
    private int priority;


    public event PropertyChangedEventHandler PropertyChanged;

    public Task()
    {
    }

    public Task(string name, int priority)
    {
        this.name = name;
        this.priority = priority;
    }

    public override string ToString()
    {
        return name.ToString();
    }

    public string TaskName
    {
        get { return name; }
        set
        {
            name = value;
            OnPropertyChanged("TaskName");
        }
    }

    public int Priority
    {
        get { return priority; }
        set
        {
            priority = value;
            OnPropertyChanged("Priority");
        }
    }

    protected void OnPropertyChanged(string info)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(info));
        }
    }
}

public class Tasks : ObservableCollection<Task>
{
    public Tasks()
        : base()
    {
        Add(new Task("Shopping", 2));
        Add(new Task("Laundry", 2));
        Add(new Task("Email", 1));
        Add(new Task("Clean", 3));
        Add(new Task("Dinner", 1));
    }
}