XAF之显示并编辑包含nonpersistent的ListView

          目标：在弹出窗口中显示一个ListView，该ListView包含的是nonpersistent Objects，且这些objects包含了简单类型，引用类型和集合类型。

具体描述：点击一个action，弹出一个LIstView，该ListView包含了父亲Parent列表，点击Parent的children可以选择其child。

效果图：

1.创建Parent为nonPersistent类。注意DataSourcePropery特性和XPCollection的getter中的构造函数，还有重写了Child的ToString方法

[NonPersistent]
    public class Parent : XPObject
    {
        private static int myId = 0;
        public Parent(Session session)
            : base(session)
        {
            Oid = myId++;
        }
        public string Name
        {
            get { return GetPropertyValue<string>("Name"); }
            set { SetPropertyValue<string>("Name", value); }
        }
        [DataSourceProperty("Children")]
        public Child MyChild
        {
            get { return GetPropertyValue<Child>("MyChild"); }
            set { SetPropertyValue<Child>("MyChild", value); }
        }
        private XPCollection<Child> _children;
        public XPCollection<Child> Children
        {
            get 
            {
                if (_children == null)
                    _children = new XPCollection<Child>(Session,false);
                return _children;
            }
        }
    }
    [NonPersistent]
    public class Child : XPObject
    {
        private static int myId = 0;
        public Child(Session session)
            : base(session)
        {
            Oid = myId++;
        }
        public string ChildName
        {
            get { return GetPropertyValue<string>("ChildName"); }
            set { SetPropertyValue<string>("ChildName", value); }
        }
        public override string ToString()
        {
            return ChildName;
        }
    }

2.建立ViewController，添加PopupWindowAction

public partial class ViewController1 : ViewController
    {
        public ViewController1()
        {
            InitializeComponent();
            RegisterActions(components);
        }

        private void popupWindowShowAction1_CustomizePopupWindowParams(object sender, CustomizePopupWindowParamsEventArgs e)
        {
            IObjectSpace objectspace = ObjectSpaceInMemory.CreateNew();
            CollectionSource cs = new CollectionSource(objectspace, typeof(Parent));
            for (int i = 0; i < 5; i++)
            {
                Parent parent = objectspace.CreateObject<Parent>();
                Child son = objectspace.CreateObject<Child>();
                son.ChildName = "kid" + i;
                Child son2 = objectspace.CreateObject<Child>();
                son2.ChildName = "kid__" + i;
                parent.Children.Add(son);
                parent.Children.Add(son2);
                parent.MyChild = son2;
                parent.Name = "father" + i;
                cs.Add(parent);
            }
            ListView view = Application.CreateListView(Application.FindListViewId(typeof(Parent)), cs, false);
            view.Editor.AllowEdit = true;
            e.View = view;
            e.DialogController.SaveOnAccept = true;
            
        }

        private void popupWindowShowAction1_Execute(object sender, PopupWindowShowActionExecuteEventArgs e)
        {
            XPCollection list = (XPCollection)((ListView)e.PopupWindow.View).CollectionSource.List;
            foreach (Parent it in list)
            {
                Console.WriteLine("------\nFather[{0}]'s son is [{1}]", it.Name, it.MyChild);
                Console.WriteLine("below is [{0}]'s all children", it.Name);
                foreach (Child it2 in it.Children)
                {
                    Console.WriteLine("Name:{0}", it2.ChildName);
                }
                Console.WriteLine("----\n");
            }
        }

    }

在popupWindowShowAction_Execute方法中为获取弹出窗口变量的方法。下面是输出结果：

------
Father[father0]'s son is [kid0]
below is [father0]'s all children
Name:kid0
Name:kid__0
----


------
Father[father1]'s son is [kid__1]
below is [father1]'s all children
Name:kid1
Name:kid__1
----


------
Father[father2]'s son is [kid__2]
below is [father2]'s all children
Name:kid2
Name:kid__2
----


------
Father[father3]'s son is [kid__3]
below is [father3]'s all children
Name:kid3
Name:kid__3
----


------
Father[John]'s son is [kid4]
below is [John]'s all children
Name:kid4
Name:kid__4
----