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 );
        }
    }
}