1、1 ManualWorkflowSchedulerService 手動調度服務當該服務加載到引擎中后，有如下特點:1. 如果實例正在運行，宿主的當前進程將被阻塞，直到工作流實例進入idle狀態(tài)，引擎對宿主的阻塞才結束2. 對實例的操作，如啟動(Start)、觸發(fā)外部事件(handleExternalEventActivity)等操作，只以手動調用ManualWorkflowSchedulerService 服務的RunWorkflow(實例ID)方法，才會真正執(zhí)行3. 只有調用ManualWorkflowSchedulerService 服務的RunWorkflow(實例ID)方法時，流程才運

2、行，宿主才被阻塞4. 當實例進入idle狀態(tài)時組塞才結束5. 可以依次調用完所用的觸發(fā)外部事件(handleExternalEventActivity),再調用ManualWorkflowSchedulerService 服務的RunWorkflow(實例ID)方法開始執(zhí)行ManualWorkflowSchedulerService mws;WorkflowRuntime runtime;runtime = newWorkflowRuntime();mws = newManualWorkflowSchedulerService();runtime.AddService(mws);Workflo

3、wInstance instance = runtime.CreateWorkflow(typeof(Workflow1);Guid instanceId;instanceId = instance.InstanceId;instance.Start(); /此時，實例并沒開始mws.RunWorkflow(instanceId);/實例開始2 與正常的工作流對比說明2.1 外部事件using System;using System.Collections.Generic;using System.Text;using System.Workflow.Activities;namespace

4、ExternalDataExchangepublicinterfaceIEXService eventEventHandler<ExtEventArgs> one;eventEventHandler<ExtEventArgs> tow;eventEventHandler<ExtEventArgs> three; SerializablepublicclassExService : IEXService publiceventEventHandler<ExtEventArgs> one;publiceventEventHandler<ExtE

5、ventArgs> tow;publiceventEventHandler<ExtEventArgs> three;publicvoid Rone(Guid instanceId) if (this.one != null) this.one(this, newExtEventArgs(instanceId); publicvoid Rtow(Guid instanceId) if (this.tow != null) this.tow(this, newExtEventArgs(instanceId); publicvoid Rthree(Guid instanceId)

6、if (this.three != null) this.three(this, newExtEventArgs(instanceId); SerializablepublicclassExtEventArgs : ExternalDataEventArgs public ExtEventArgs(Guid instanceId) : base(instanceId) 2.2 工作流2.3 工作流結點代碼using System;using System.ComponentModel;using System.ComponentModel.Design;using System.Collect

7、ions;using System.Drawing;using System.Workflow.ComponentModel.Compiler;using System.Workflow.ComponentModel.Serialization;using System.Workflow.ComponentModel;using System.Workflow.ComponentModel.Design;using System.Workflow.Runtime;using System.Workflow.Activities;using System.Workflow.Activities.

8、Rules;namespacepublicsealedpartialclassWorkflow1: SequentialWorkflowActivitypublic Workflow1()InitializeComponent();privatevoid codeActivity1_ExecuteCode(object sender, EventArgs e) System.Console.WriteLine("開始" + DateTime.Now.ToString(); privatevoid codeActivity2_ExecuteCode(object sender

9、, EventArgs e) System.Console.WriteLine("One(隨后sleep 20M)" + DateTime.Now.ToString(); System.Threading.Thread.Sleep(20000); privatevoid codeActivity3_ExecuteCode(object sender, EventArgs e) System.Console.WriteLine("two" + DateTime.Now.ToString(); privatevoid codeActivity4_Execut

10、eCode(object sender, EventArgs e) System.Console.WriteLine("three" + DateTime.Now.ToString(); 2.4 宿主代碼Guid instanceId;WorkflowRuntime runtime;ExService exchangeServer;ManualWorkflowSchedulerService mws;/正常啟動引擎privatevoid button1_Click(object sender, EventArgs e) runtime = newWorkflowRuntim

11、e();ExternalDataExchangeService exchange = newExternalDataExchangeService(); runtime.AddService(exchange); exchangeServer = newExService(); exchange.AddService(exchangeServer); runtime.StartRuntime();WorkflowInstance instance = runtime.CreateWorkflow(typeof(Workflow1); instanceId = instance.Instance

12、Id; instance.Start(); /ManualWorkflowSchedulerService方式啟動引擎privatevoid button5_Click(object sender, EventArgs e) runtime = newWorkflowRuntime();ExternalDataExchangeService exchange = newExternalDataExchangeService(); runtime.AddService(exchange); mws = newManualWorkflowSchedulerService(); runtime.Ad

13、dService(mws); exchangeServer = newExService(); exchange.AddService(exchangeServer); runtime.StartRuntime();WorkflowInstance instance = runtime.CreateWorkflow(typeof(Workflow1); instanceId = instance.InstanceId; instance.Start(); /oneprivatevoid button2_Click(object sender, EventArgs e) exchangeServ

14、er.Rone(instanceId); /towprivatevoid button3_Click(object sender, EventArgs e) exchangeServer.Rtow(instanceId); /threeprivatevoid button4_Click(object sender, EventArgs e) exchangeServer.Rthree(instanceId); /ManualWorkflowSchedulerService的RunWorkflowprivatevoid button6_Click(object sender, EventArgs

15、 e) mws.RunWorkflow(instanceId); 2.5 正常使用開始-09-12 14:33:35One(隨后sleep 20M)2007-09-12 14:33:38two2007-09-12 14:34:05three2007-09-12 14:34:141. 啟動，開運行 codeActivity1的代碼，顯示"開始-09-12 14:33:35",然后進入one的idel2. 觸發(fā)one,并運行codeActivity2的代碼,，顯示"One(隨后sleep 20M)2007-09-12 14:33:38",Sleep 20秒后

16、，進入two的idel3. 觸發(fā)two,并運行codeActivity3的代碼,，顯示"two2007-09-12 14:34:05",進入three的idel4. 觸發(fā)three,并運行codeActivity4的代碼,，顯示"three2007-09-12 14:34:14",進入three的idel注意：A. 當執(zhí)行codeActivity2的Sleep 20秒的過程中， 宿主線程并沒有被阻塞?？梢岳^承點擊其他按鈕B. 可以不等codeActivity2的Sleep 20秒的過程結束，就可以直接點擊后面的按鈕，觸發(fā)tow與three,此時，這些執(zhí)行

17、將在實例里排隊，最后都會被依次執(zhí)行開始-09-12 14:39:22線程0x954 已退出，返回值為0 (0x0)。線程0x1b0 已退出，返回值為0 (0x0)。two2007-09-12 14:39:42three2007-09-12 14:39:42由于是排隊，codeActivity3與codeActivity4，的執(zhí)行，幾乎沒有時間差2.6 使用ManualWorkflowSchedulerService開始2007-09-12 14:43:13One(隨后 sleep 20M)2007-09-12 14:43:13two2007-09-12 14:43:38three2007-09-12 14:43:40操作過程是1,run (啟動 -> codeActivity1 -> one idel)2,run (觸發(fā)one ->codeActivity2 -> two idel)3,run (觸發(fā)two -> codeActivity3 -> three idel)4,run (觸發(fā)three -> codeActivity4 -> 完成)當實例沒有進入idel時，宿組線程是被阻塞的，這時無法操作任何按鈕，程序也進入一種無響應狀態(tài)注意：A. 對實例的所有操作只有執(zhí)行ManualWorkflowSch