WF4设计器数据模型：ModelItem和ModelProperty

public class Animal
{
    // simple property
    public string Name { get; set; }
    // complex property 
    public Location Residence { get; set; } 
    // list 
    public List<Animal> CloseRelatives { get; set; }
    // dictionary
    public Dictionary<string, object> Features { get; set; } 
}

public class Location
{
    public string StreetAddress { get; set; }
    public string City { get; set; }
    public string State { get; set; } 
}

EditingContext ec = new EditingContext();

var companion1 = new Animal { Name = "Houdini the parakeet" };

var companion2 = new Animal { Name = "Groucho the fish" };

var animal = new Animal 

                 {

                       Name = "Sasha the pug",

                       Residence = new Location 

                       {

                           StreetAddress = "123 Main Street",

                           City = "AnyTown",

                           State = "Washington"

                       },

                       Features = { 

                          {"noise", "snort" },

                          {"MeanTimeUntilNaps", TimeSpan.FromMinutes(15) }

                       },

                       CloseRelatives = { companion1, companion2 } 

               };

ModelTreeManager mtm = new ModelTreeManager(ec);  mtm.Load(animal);

ModelItem mi = mtm.Root;

可以通过下面方式来获得相关属性值：

root.Properties["Residence"].
                Value.
                Properties["StreetAddress"].
                Value.GetCurrentValue()

你可能觉得上面的方式比较丑陋，但是在XAML中可以ModelItem.Location.StreetAddress自动路由过来，而其WF团队还承诺正式版会增加Dynamic的支持。

下面是一些测试：