wwf 4.0 加载的工作流怎么传参

oXueYuZhiYing 2014-05-10 12:07:10

wwf 4.0 加载的工作流怎么传参, 是否有例子!
在下面的代码中怎么样可以把 public string Load(string id, object inputs = null,Dictionary<string,object> ids=null)
中的 ids传到工流中??



using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Activities;

using System.Activities.DurableInstancing;

using System.Runtime.DurableInstancing;

using System.Activities.XamlIntegration;



namespace Common

{

    /// <summary>

    /// 工作流辅助类

    /// </summary>

    public class WFHelp

    {

        private string bookMark = string.Empty;

        private string path = string.Empty;

        private string connectionString = string.Empty;

        private InstanceStore _instanceStore;

        public WFHelp()

        {

            this.bookMark = "BookmarkName";

            this.path = System.Web.HttpContext.Current.Server.MapPath("~/WF/Activity1.xaml");

            this.connectionString = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"];

        }

        public WFHelp(string bookMark, string path, string connectionString)

        {

            this.bookMark = bookMark;

            this.path = path;

            this.connectionString = connectionString;

        }

        /// <summary>

        /// 加载工作流

        /// </summary>

        /// <param name="id">工作流的唯一标示</param>

        /// <param name="bookMark">标签名称</param>

        /// <param name="ids">恢复指定名称的书签的时候，传入的参数</param>

        /// <returns>工作流的加载的状态</returns>

        public string Load(string id, object inputs = null,Dictionary<string,object> ids=null)

        {

            _instanceStore = new SqlWorkflowInstanceStore(connectionString);

            InstanceView view = _instanceStore.Execute

                (_instanceStore.CreateInstanceHandle(),

                new CreateWorkflowOwnerCommand(),

                TimeSpan.FromSeconds(30));

            _instanceStore.DefaultInstanceOwner = view.InstanceOwner;



            WorkflowApplication i = new WorkflowApplication(ActivityXamlServices.Load(path));



            i.InstanceStore = _instanceStore;

            i.PersistableIdle = (waiea) => PersistableIdleAction.Unload;

            try

            {

                i.Load(new Guid(id));

                return i.ResumeBookmark(bookMark, inputs).GetString();

            }

            catch (Exception ex)

            {

                throw ex;

            }



        }

        /// <summary>

        /// 创建工作流

        /// </summary>

        /// <param name="parameters">传入的参数</param>

        /// <returns>获取工作流实例的Id值</returns>

        public string Create(IDictionary<string, object> parameters)

        {

            _instanceStore = new SqlWorkflowInstanceStore(connectionString);

            InstanceView view = _instanceStore.Execute

                (_instanceStore.CreateInstanceHandle(),

                new CreateWorkflowOwnerCommand(),

                TimeSpan.FromSeconds(30));

            _instanceStore.DefaultInstanceOwner = view.InstanceOwner;



            WorkflowApplication i = new WorkflowApplication(ActivityXamlServices.Load(path), parameters);

            i.InstanceStore = _instanceStore;

            i.PersistableIdle = (waiea) => PersistableIdleAction.Unload;

            i.Run();

            return i.Id.ToString();



        }

    }

}