WF4 子流程的实现

using System;
using System.Linq;
using System.Activities;
using System.Activities.Statements;
using System.Collections.Generic;

namespace WorkflowConsoleApplication2
{

    class Program
    {
        public static WorkflowApplication Instance = null;
        static void Main(string[] args)
        {
         //   WorkflowInvoker.Invoke(new Workflow1());
            Instance = new WorkflowApplication(new Workflow1());
            Instance.Run();
            System.Console.Read(); 
        }
    }

    public class MyActivity : NativeActivity
    {
        public static string bookmark = "AAAAAAAA";
        public static Guid InstanceId = Guid.Empty;



        public List<string> Tests { get; set; }
        protected override bool CanInduceIdle
        {
            get
            { return true; }
        }
        protected override void Execute(NativeActivityContext context)
        {
            Tests = new List<string>() { "A", "B", "C", "D", "E", "F" };
            WorkflowApplication app = new WorkflowApplication(Create(Tests));
            app.Run();
            InstanceId = app.Id;

            context.CreateBookmark(bookmark, bookmarkCallback);
            Console.WriteLine("No");

        }
        protected void bookmarkCallback(NativeActivityContext context, Bookmark bookmark, object obj)
        {
            Console.WriteLine("OK");
        }

        public Activity Create(List<string> l)
        {
            var par = new Parallel()
            {

            };

            foreach (var item in l)
            {
                par.Branches.Add(new WriteLine() { Text = item });
            }
            var seq = new Sequence();
            seq.Activities.Add(par);
            seq.Activities.Add(new BackActivity());
            return seq;
        }

    }

    public class BackActivity : NativeActivity
    {
        protected override void Execute(NativeActivityContext context)
        {
            // MyActivity.mainInstance.ResumeBookmark(MyActivity.bookmark, null);
            Program.Instance.ResumeBookmark(MyActivity.bookmark, null);
        }
    }
}