Generating Diagrams from a Data Source

public class ViewModel {
    public List<Item> Items { get; set; }
    public List<Link> Connections { get; set; }
    public ViewModel() {
        Items = new List<Item>();
        for (int i = 0; i < 5; i++)
            Items.Add(new Item { Id = i, Name = "Item " + i });
        Connections = new List<Link>();
        for (int i = 0; i < 4; i++)
            Connections.Add(new Link { From = Items[i].Id, To = Items[i + 1].Id });
        Connections.Add(new Link { From = Items[4].Id, To = Items[0].Id });
    }
}
public class Item {
    public int Id { get; set; }
    public string Name { get; set; }
}

public class Link {
    public object From { get; set; }
    public object To { get; set; }
}

public Form1() {
    InitializeComponent();
    ViewModel viewModel = new ViewModel();
    diagramDataBindingController1.GenerateItem += DiagramDataBindingController1_GenerateItem;
    diagramDataBindingController1.DataSource = viewModel.Items;
    diagramDataBindingController1.KeyMember = "Id";
    diagramDataBindingController1.ConnectorsSource = viewModel.Connections;
    diagramDataBindingController1.ConnectorFromMember = "From";
    diagramDataBindingController1.ConnectorToMember = "To";
    diagramDataBindingController1.LayoutKind = DiagramLayoutKind.Circular;
}
private void DiagramDataBindingController1_GenerateItem(object sender, DiagramGenerateItemEventArgs e) {
    var item = new DiagramShape {
        X = 27,
        Width = 75,
        Height = 50,
        Shape = BasicShapes.Rectangle
    };
    item.Bindings.Add(new DiagramBinding("Content", "Name"));
    e.Item = item;
}