数据库准备：
1. 创建database（这里我们用的是MSSQL。Workflow支持其它数据库，但是MSSQL是配置最方便，不要问我为什么！）。
2.
运行位于[%WINDIR%\Microsoft.NET\Framework\v4.xxx\SQL\EN]的的脚本文件SqlWorkflowInstanceStoreSchema.sql和SqlWorkflowInstanceStoreLogic.sql。这时数据库中表应该类似于下图：
开工:
1.
在上一个项目的基础上，引入System.Activites.DurableInstancing和System.Runtime.DurableInstancing。如下图所示：
2. 修改Console Project的program.cs如下：
1 static void Main(string[] args)
2 {
3 // Workflow Store of SQL Server
4 SqlWorkflowInstanceStore store =
5 new SqlWorkflowInstanceStore("Data Source=192.168.3.26;Initial Catalog=workflow_hour3;Persist Security Info=True;User ID=sa;[email protected]");
6
7 AutoResetEvent syncEvent = new AutoResetEvent(false);
8
9 Activity wf = new WorkflowsProject.Activity1();
10
11 // Create the WorkflowApplication using the desired
12 // workflow definition.
13 WorkflowApplication wfApp = new WorkflowApplication(wf);
14
15 // Assign workflow store to the current workflow
16 wfApp.InstanceStore = store;
17
18 wfApp.PersistableIdle = delegate(WorkflowApplicationIdleEventArgs e)
19 {
20 Console.WriteLine("Workflow {0} persisted at {1}",
21 e.InstanceId, System.DateTime.Now.ToLongTimeString());
22 return PersistableIdleAction.Persist;
23 };
24
25 wfApp.Idle = delegate(WorkflowApplicationIdleEventArgs e)
26 {
27 Console.WriteLine("Workflow {0} idled at {1}",
28 e.InstanceId, System.DateTime.Now.ToLongTimeString());
29 syncEvent.Set();
30 };
31
32 // Handle the desired lifecycle events.
33 wfApp.Completed = delegate(WorkflowApplicationCompletedEventArgs e)
34 {
35 Console.WriteLine("Workflow {0} completed.", e.InstanceId.ToString());
36 syncEvent.Set();
37 };
38
39 wfApp.Aborted = delegate(WorkflowApplicationAbortedEventArgs e)
40 {
41 Console.WriteLine("Workflow {0} terminated because {1}", e.InstanceId, e.Reason.Message);
42 syncEvent.Set();
43 };
44
45 // Start the workflow.
46 wfApp.Run();
47
48 // Wait for Completed to arrive and signal that
49 // the workflow is complete.
50 syncEvent.WaitOne();
51
52 // Keep the console screen alive when workflow comnpletes
53 Console.WriteLine("Press enter to continue");
54 Console.Read();
55 }
3. 修改Delay的Duration为30秒，方便我们观察数据库的数据变化：
4. 运行。结果如下：
5. 在workflow
persisted阶段，还没有到completed的时候，如果查看数据库中的[System.Activities.DurableInstancing].[InstancesTable]表，我们就会发现诸如如下的记录：
而当workflow运行到completed的时候，在查询这张表，就会发现这条记录已经不存在了。说明工作流的数据存储运行正确。
时间： 2025-01-12 22:51:10