使用C#代码审批/转签K2 Blackpearl流程

以下是使用代码审批、转签k2 blackpearl流程，初探K2 Blackpearl，望高人多多包涵、指点.

　　　　//执行动作
        private void MyAction(string argAction)
        {
            //创建连接对象
            SourceCode.Workflow.Client.Connection wfcon = new SourceCode.Workflow.Client.Connection();
            //打开K2连接
            string k2Server = System.Configuration.ConfigurationManager.AppSettings["K2Server"];
            string workflowServicePort = System.Configuration.ConfigurationManager.AppSettings["WorkflowServicePort"];
            wfcon.Open(k2Server + ":" + workflowServicePort);
            
            //当前用户打开
            wfcon.ImpersonateUser(HttpContext.Current.User.Identity.Name);

            //获取流程列表
            SourceCode.Workflow.Client.WorklistItem worklistitem = wfcon.OpenWorklistItem(SN);

            /*
            //获取流程实例编号
            string[] _SN = SN.Split('_');
            int _ID = int.Parse(_SN[0]);
            //获取流程实例
            SourceCode.Workflow.Client.ProcessInstance proInst = wfcon.OpenProcessInstance(_ID);
            //DataFields赋值
            proInst.DataFields["TaskUsers"].Value = ddlTaskUsers.SelectedValue;
            //更新DataFields
            procinst.Update();
            */

            //查找action(执行动作)
            foreach (SourceCode.Workflow.Client.Action action in worklistitem.Actions)
            {
                if (action.Name.Equals(argAction))
                {
                    //执行动作
                    action.Execute();
                }
            }
            wfcon.Dispose();
        }

        //转签
        protected void ProcRedirect(string argEmpName)
        {
            //创建连接对象
            SourceCode.Workflow.Client.Connection wfcon = new SourceCode.Workflow.Client.Connection();
            
            //打开K2连接
            string k2Server = System.Configuration.ConfigurationManager.AppSettings["K2Server"];
            string workflowServicePort = System.Configuration.ConfigurationManager.AppSettings["WorkflowServicePort"];
            wfcon.Open(k2Server + ":" + workflowServicePort);

            wfcon.ImpersonateUser(HttpContext.Current.User.Identity.Name);

            //获取流程列表
            SourceCode.Workflow.Client.WorklistItem worklistitem = wfcon.OpenWorklistItem(SN);
            //转签
            worklistitem.Redirect(argEmpName);
            //释放资源
            wfcon.Dispose();
        }

流程图如下：