場景是這樣的:
1.workflowruntime啟動了持久化和監聽服務
2.workfllowruntime創建多個實例,并啟動,一些會長時間延時,一些會中途暫停,會不同的執行狀態(業務狀態)
3.另有一winform控制臺,有個表格,刷新顯示每個實例的信息,包括業務狀態--比如創建,運行,掛起等
4.通過workflowruntime.GetLoadedWorkflows()方法取得所有實例,但卻沒有辦法得到正確的業務狀態

當然,當將實例unload,再load后(實例回寫到數據庫),通過SqlTrackingQuery查詢得到SqlTrackingWorkflowInstance.Status是可以.可是實際上,不可能一刷新實例表格就要將實例unload.所以,在想有沒有辦法在workflowruntime平臺上,獲取實例的業務狀態.?
決定自己寫個類,解決這個問題,思路如下:
1.在宿主中構建Dictionary<Guid, TrackingStatus>,用于維護instance狀態
2.預訂workflowruntime與instance相關的事件
3.在事件處理方法中更新instance對應的trackingstatus
4.定義event WorkflowStatusChangeEventHandler WorkflowStatusChanged事件,以便狀態變化時處理

兩個類:
TrackingStatus
?1using?System;
?2using?System.Collections.Generic;
?3using?System.Text;
?4
?5using?System.Workflow;
?6using?System.Workflow.Runtime;
?7using?System.Workflow.Runtime.Hosting;
?8using?System.Workflow.Runtime.Tracking;
?9using?System.Workflow.Activities;
10using?System.Workflow.ComponentModel;
11
12namespace?WFDebugger
13{
14????public?class?TrackingStatus
15????{
16????????private?WorkflowInstance?instance;
17????????private?WorkflowStatus?status;
18????????private?DateTime?lasteventtime;
19
20????????public?TrackingStatus(WorkflowInstance?instance,?WorkflowStatus?status,?System.DateTime?eventtime)
21????????{
22????????????if?(instance?==?null?||?eventtime?==?null)
23????????????{
24????????????????throw(new?ArgumentNullException("instance|status|eventtime"));
25????????????}
26????????????this.instance?=?instance;
27????????????this.status?=?status;
28????????????this.lasteventtime?=?eventtime;
29????????}
30
31????????public?TrackingStatus(WorkflowInstance?instance,?WorkflowStatus?status)
32????????{
33????????????if?(instance?==?null)
34????????????{
35????????????????throw?(new?ArgumentNullException("instance|status|eventtime"));
36????????????}
37????????????this.instance?=?instance;
38????????????this.status?=?status;
39????????????this.lasteventtime?=?DateTime.Now;
40????????}
41????
42????????public?WorkflowInstance?Instance
43????????{
44????????????get
45????????????{
46????????????????return?instance;
47????????????}
48????????}
49
50????????public?WorkflowStatus?Status
51????????{
52????????????get
53????????????{
54????????????????return?status;
55????????????}
56????????}
57
58????????public?DateTime?LastEventTime
59????????{
60????????????get
61????????????{
62????????????????return?lasteventtime;
63????????????}
64????????}
65
66????????public?void?ChangeStatus(WorkflowStatus?status,?DateTime?eventtime)
67????????{
68????????????if?(!TryChangeStatus(status,?eventtime,new?TimeSpan(0,0,10)))
69????????????{
70????????????????throw(new?Exception("can't?lock?variable"));
71????????????}
72????????}
73
74????????public?void?ChangeStatus(WorkflowStatus?status)
75????????{
76????????????ChangeStatus(status,?DateTime.Now);
77????????}
78
79????????public?bool?TryChangeStatus(WorkflowStatus?status,?DateTime?eventtime,TimeSpan?timeout)
80????????{
81????????????if?(System.Threading.Monitor.TryEnter(this.status,?timeout))
82????????????{
83????????????????this.status?=?status;
84????????????????lasteventtime?=?eventtime;
85????????????????return?true;
86????????????}
87????????????else
88????????????{
89????????????????return?false;
90????????????}
91????????}
92????????public?bool?TryChangeStatus(WorkflowStatus?status,?TimeSpan?timeout)
93????????{
94????????????return?TryChangeStatus(status,DateTime.Now,?timeout);
95????????}
96????}
97}
98
99
TrackingWorkflowEvent
??1using?System;
??2using?System.Collections;
??3using?System.Collections.Generic;
??4using?System.Data;
??5
??6using?System.Workflow;
??7using?System.Workflow.Runtime;
??8using?System.Workflow.Runtime.Hosting;
??9using?System.Workflow.Runtime.Tracking;
?10using?System.Workflow.Activities;
?11using?System.Workflow.ComponentModel;
?12using?System.Collections.ObjectModel;
?13
?14
?15
?16namespace?WFDebugger
?17{
?18????class?TrackingWorkflowEvent:IDisposable?????
?19????{
?20
?21????????事件#region?事件
?22????????public?delegate?void?WorkflowStatusChangeEventHandler(object?sender,?WorkflowStatusChangeEventArgs?e);
?23????????public?event?WorkflowStatusChangeEventHandler?WorkflowStatusChanged;
?24????????void?RaiseWorkflowStatusChangeEvent(WorkflowRuntime?runtime,WorkflowStatusChangeEventArgs?e)
?25????????{
?26????????????if?(WorkflowStatusChanged?!=?null)
?27????????????{
?28????????????????WorkflowStatusChanged.Invoke(runtime,?e);
?29????????????}
?30????????}
?31????????#endregion
?32
?33????????私有變量#region?私有變量
?34????????private?WorkflowRuntime?workflowruntime;
?35????????private?SqlTrackingService?trackingservice;
?36????????private?SqlWorkflowPersistenceService?persistenceService;
?37????????private?bool?initialized?=?false;
?38????????private?bool?tacked?=?false;
?39
?40????????private?Dictionary<Guid,?TrackingStatus>?dic?=?new?Dictionary<Guid,?TrackingStatus>();
?41
?42????????#endregion
?43
?44????????public?TrackingWorkflowEvent(WorkflowRuntime?workflowruntime)
?45????????{
?46????????????if?(workflowruntime?!=?null)
?47????????????{
?48????????????????this.workflowruntime?=?workflowruntime;
?49????????????????ReadOnlyCollection<SqlTrackingService>?tcol?=?workflowruntime.GetAllServices<SqlTrackingService>();
?50????????????????if?(tcol?!=?null?&&?tcol.Count?>?0)
?51????????????????{
?52????????????????????trackingservice?=?tcol[0];
?53????????????????}
?54????????????????else
?55????????????????{
?56????????????????????throw?(new?Exception("Workflowruntime?havn't?TrackingService."));
?57????????????????}
?58
?59????????????????ReadOnlyCollection<SqlWorkflowPersistenceService>?pcol?=?workflowruntime.GetAllServices<SqlWorkflowPersistenceService>();
?60????????????????if?(pcol?!=?null?&&?pcol.Count?>?0)
?61????????????????{
?62????????????????????persistenceService?=?pcol[0];
?63????????????????}
?64????????????????else
?65????????????????{
?66????????????????????throw?(new?Exception("Workflowruntime?havn't?WorkflowPersistenceService."));
?67????????????????}
?68
?69????????????????//runtime?event
?70????????????????workflowruntimeStarted?=?new?EventHandler<WorkflowRuntimeEventArgs>(workflowRuntime_Started);
?71????????????????workflowruntimeServicesExceptionNotHandled?=?new?EventHandler<ServicesExceptionNotHandledEventArgs>(workflowRuntime_ServicesExceptionNotHandled);
?72????????????????workflowruntimeStopped?=?new?EventHandler<WorkflowRuntimeEventArgs>(workflowRuntime_Stopped);
?73
?74????????????????//instance?event
?75????????????????workflowruntimeWorkflowCompleted?=?new?EventHandler<WorkflowCompletedEventArgs>(workflowRuntime_WorkflowCompleted);
?76????????????????workflowruntimeWorkflowTerminated?=?new?EventHandler<WorkflowTerminatedEventArgs>(workflowRuntime_WorkflowTerminated);
?77????????????????workflowruntimeWorkflowSuspended?=?new?EventHandler<WorkflowSuspendedEventArgs>(workflowRuntime_WorkflowSuspended);
?78????????????????workflowruntimeWorkflowAborted?=?new?EventHandler<WorkflowEventArgs>(workflowRuntime_WorkflowAborted);
?79????????????????workflowruntimeWorkflowResumed?=?new?EventHandler<WorkflowEventArgs>(workflowRuntime_WorkflowResumed);
?80????????????????workflowruntimeWorkflowLoaded?=?new?EventHandler<WorkflowEventArgs>(workflowRuntime_WorkflowLoaded);
?81????????????????workflowruntimeWorkflowIdled?=?new?EventHandler<WorkflowEventArgs>(workflowRuntime_WorkflowIdled);
?82????????????????workflowruntimeWorkflowPersisted?=?new?EventHandler<WorkflowEventArgs>(workflowRuntime_WorkflowPersisted);
?83????????????????workflowruntimeWorkflowUnloaded?=?new?EventHandler<WorkflowEventArgs>(workflowRuntime_WorkflowUnloaded);
?84????????????????workflowruntimeWorkflowCreated?=?new?EventHandler<WorkflowEventArgs>(workflowRuntime_WorkflowCreated);
?85????????????????workflowruntimeWorkflowStarted?=?new?EventHandler<WorkflowEventArgs>(workflowRuntime_WorkflowStarted);
?86
?87????????????????initialized?=?true;
?88????????????}
?89????????????else
?90????????????{
?91????????????????throw?(new?ArgumentNullException("workflowruntime"));
?92????????????}
?93????????}
?94
?95????????私有方法#region?私有方法
?96????????private?bool?AddInstance(WorkflowInstance?instance)
?97????????{
?98????????????if?(instance?==?null)
?99????????????{
100????????????????throw(new?ArgumentNullException("instance"));
101????????????}
102????????????if?(instance.WorkflowRuntime?!=?workflowruntime)
103????????????{
104????????????????throw?(new?Exception("different?workflowruntime"));
105????????????}
106????????????SqlTrackingQuery?sq?=?new?SqlTrackingQuery(trackingservice.ConnectionString);
107????????????SqlTrackingWorkflowInstance?sqi?;
108????????????if?(sq.TryGetWorkflow(instance.InstanceId,?out?sqi))
109????????????{
110????????????????dic.Add(instance.InstanceId,?new?TrackingStatus(instance,?sqi.Status));
111????????????????RaiseWorkflowStatusChangeEvent(workflowruntime,?new?WorkflowStatusChangeEventArgs(instance,sqi.Status));
112????????????????return?true;
113????????????}
114????????????else
115????????????????return?false;
116????????}
117????????private?bool?AddInstance(WorkflowInstance?instance,WorkflowStatus?status)
118????????{
119????????????if?(instance?==?null)
120????????????{
121????????????????throw?(new?ArgumentNullException("instance"));
122????????????}
123????????????if?(instance.WorkflowRuntime?!=?workflowruntime)
124????????????{
125????????????????throw?(new?Exception("different?workflowruntime"));
126????????????}
127????????????dic.Add(instance.InstanceId,?new?TrackingStatus(instance,?status));
128????????????RaiseWorkflowStatusChangeEvent(workflowruntime,?new?WorkflowStatusChangeEventArgs(instance,?status));
129????????????return?true;
130????????}
131
132????????private?void?RemoveInstance(WorkflowInstance?instance)
133????????{
134????????????if?(instance?==?null)
135????????????{
136????????????????throw?(new?ArgumentNullException("instance"));
137????????????}
138????????????if?(instance.WorkflowRuntime?!=?workflowruntime)
139????????????{
140????????????????throw?(new?Exception("different?workflowruntime"));
141????????????}
142????????????RemoveInstance(instance.InstanceId);
143????????}
144????????private?void?RemoveInstance(Guid?instanceid)
145????????{
146????????????//if?(instanceid?==?null)
147????????????//{
148????????????//????throw?(new?ArgumentNullException("instanceid"));
149????????????//}
150????????????if?(dic.ContainsKey(instanceid))
151????????????{
152????????????????dic.Remove(instanceid);
153????????????}
154????????????else
155????????????{
156????????????????throw?(new?Exception("no?found?appointed?instance"));
157????????????}
158
159
160????????}
161????????private?bool?ChangeStatus(WorkflowInstance?instance,?WorkflowStatus?status)
162????????{
163????????????if?(instance?==?null)
164????????????{
165????????????????throw?(new?ArgumentNullException("instance"));
166????????????}
167????????????//if?(status?==?null)
168????????????//{
169????????????//????throw?(new?ArgumentNullException("status"));
170????????????//}
171????????????if?(dic.ContainsKey(instance.InstanceId))
172????????????{
173????????????????TrackingStatus?ts?=?dic[instance.InstanceId];
174????????????????bool?r?=?ts.TryChangeStatus(status,new?TimeSpan(0,0,10));
175????????????????RaiseWorkflowStatusChangeEvent(workflowruntime,?new?WorkflowStatusChangeEventArgs(instance,?status));
176????????????????return?r;
177????????????}
178????????????else
179????????????{
180????????????????return?false;
181????????????????//return?AddInstance(instance,?status);
182????????????}
183
184
185????????}
186????????#endregion
187
188????????公開屬性#region?公開屬性
189????????/**////?<summary>
190????????///?工作流環境
191????????///?</summary>
192????????public?WorkflowRuntime?WorkflowRuntime
193????????{
194????????????get
195????????????{
196????????????????return?workflowruntime;
197????????????}
198????????}
199
200????????/**////?<summary>
201????????///?實例數量
202????????///?</summary>
203????????public?int?Count
204????????{
205????????????get
206????????????{
207????????????????return?dic.Count;
208????????????}
209????????}
210
211????????/**////?<summary>
212????????///?是否在跟蹤
213????????///?</summary>
214????????public?bool?IsOnTracking
215????????{
216????????????get
217????????????{
218????????????????return?tacked;
219????????????}
220????????}
221????????/**////?<summary>
222????????///?是否初始化
223????????///?</summary>
224????????public?bool?Initialized
225????????{
226????????????get
227????????????{
228????????????????return?initialized;
229????????????}
230????????}
231????????public?WorkflowStatus?GetWorkflowStatus(Guid?instanceID)
232????????{
233????????????//if?(instanceID?==?null)
234????????????//{
235????????????//????throw(new?ArgumentNullException("instanceID"));
236????????????//}
237????????????if?(dic.ContainsKey(instanceID))
238????????????{
239????????????????return?dic[instanceID].Status;
240????????????}
241????????????else
242????????????{
243????????????????throw(new?Exception("no?found?appointed?instance"));
244????????????????//return?AddInstance(instance,?status);
245????????????}
246????????}
247????????public?WorkflowStatus?GetWorkflowStatus(WorkflowInstance?instance)
248????????{
249????????????if?(instance?==?null)
250????????????{
251????????????????throw?(new?ArgumentNullException("instance"));
252????????????}
253????????????if?(instance.WorkflowRuntime?!=?workflowruntime)
254????????????{
255????????????????throw?(new?Exception("different?workflowruntime"));
256????????????}
257????????????return?GetWorkflowStatus(instance.InstanceId);
258????????}
259
260????????#endregion?
261
262????????Runtime?Event#region?Runtime?Event
263????????
264????????事件句柄#region?事件句柄
265????????//runtime?event
266????????EventHandler<WorkflowRuntimeEventArgs>??????????????workflowruntimeStarted;
267????????EventHandler<ServicesExceptionNotHandledEventArgs>??workflowruntimeServicesExceptionNotHandled;
268????????EventHandler<WorkflowRuntimeEventArgs>??????????????workflowruntimeStopped;
269
270????????//instance?event
271????????EventHandler<WorkflowCompletedEventArgs>????????????workflowruntimeWorkflowCompleted;
272????????EventHandler<WorkflowTerminatedEventArgs>???????????workflowruntimeWorkflowTerminated;
273????????EventHandler<WorkflowSuspendedEventArgs>????????????workflowruntimeWorkflowSuspended;
274????????EventHandler<WorkflowEventArgs>?????????????????????workflowruntimeWorkflowAborted;
275????????EventHandler<WorkflowEventArgs>?????????????????????workflowruntimeWorkflowResumed;
276????????EventHandler<WorkflowEventArgs>?????????????????????workflowruntimeWorkflowLoaded;
277????????EventHandler<WorkflowEventArgs>?????????????????????workflowruntimeWorkflowIdled;
278????????EventHandler<WorkflowEventArgs>?????????????????????workflowruntimeWorkflowPersisted;
279????????EventHandler<WorkflowEventArgs>?????????????????????workflowruntimeWorkflowUnloaded;
280????????EventHandler<WorkflowEventArgs>?????????????????????workflowruntimeWorkflowCreated;
281????????EventHandler<WorkflowEventArgs>?????????????????????workflowruntimeWorkflowStarted;
282
283????????public?void?TackEvent()
284????????{
285????????????if?(initialized?&&?!tacked)
286????????????{
287????????????????預定事件#region?預定事件
288????????????????//runtime?event
289????????????????workflowruntime.Started?+=?workflowruntimeStarted;
290????????????????workflowruntime.ServicesExceptionNotHandled?+=?workflowruntimeServicesExceptionNotHandled;
291????????????????workflowruntime.Stopped?+=?workflowruntimeStopped;
292
293????????????????//instance?event
294????????????????workflowruntime.WorkflowCompleted?+=?workflowruntimeWorkflowCompleted;
295????????????????workflowruntime.WorkflowTerminated?+=?workflowruntimeWorkflowTerminated;
296????????????????workflowruntime.WorkflowSuspended?+=?workflowruntimeWorkflowSuspended;
297????????????????workflowruntime.WorkflowAborted?+=?workflowruntimeWorkflowAborted;
298????????????????workflowruntime.WorkflowResumed?+=?workflowruntimeWorkflowResumed;
299????????????????workflowruntime.WorkflowLoaded?+=?workflowruntimeWorkflowLoaded;
300????????????????workflowruntime.WorkflowIdled?+=?workflowruntimeWorkflowIdled;
301????????????????workflowruntime.WorkflowPersisted?+=?workflowruntimeWorkflowPersisted;
302????????????????workflowruntime.WorkflowUnloaded?+=?workflowruntimeWorkflowUnloaded;
303????????????????workflowruntime.WorkflowCreated?+=?workflowruntimeWorkflowCreated;
304????????????????workflowruntime.WorkflowStarted?+=?workflowruntimeWorkflowStarted;
305????????????????#endregion
306????????????????tacked?=?true;
307????????????}
308????????????else
309????????????{
310????????????????throw(?new?Exception("TrackingWorkflowEvent?didn't?initialized?or?TrackingInstanceEvent?tacked?event"));
311????????????}
312????????}
313
314????????public?void?UntackEvent()
315????????{
316????????????if?(initialized?&&?tacked)
317????????????{
318????????????????卸載事件#region?卸載事件
319????????????????//runtime?event
320????????????????workflowruntime.Started?-=?workflowruntimeStarted;
321????????????????workflowruntime.ServicesExceptionNotHandled?-=?workflowruntimeServicesExceptionNotHandled;
322????????????????workflowruntime.Stopped?-=?workflowruntimeStopped;
323
324????????????????//instance?event
325????????????????workflowruntime.WorkflowCompleted?-=?workflowruntimeWorkflowCompleted;
326????????????????workflowruntime.WorkflowTerminated?-=?workflowruntimeWorkflowTerminated;
327????????????????workflowruntime.WorkflowSuspended?-=?workflowruntimeWorkflowSuspended;
328????????????????workflowruntime.WorkflowAborted?-=?workflowruntimeWorkflowAborted;
329????????????????workflowruntime.WorkflowResumed?-=?workflowruntimeWorkflowResumed;
330????????????????workflowruntime.WorkflowLoaded?-=?workflowruntimeWorkflowLoaded;
331????????????????workflowruntime.WorkflowIdled?-=?workflowruntimeWorkflowIdled;
332????????????????workflowruntime.WorkflowPersisted?-=?workflowruntimeWorkflowPersisted;
333????????????????workflowruntime.WorkflowUnloaded?-=?workflowruntimeWorkflowUnloaded;
334????????????????workflowruntime.WorkflowCreated?-=?workflowruntimeWorkflowCreated;
335????????????????workflowruntime.WorkflowStarted?-=?workflowruntimeWorkflowStarted;
336
337????????????????#endregion
338
339????????????????tacked?=?false;
340????????????}
341????????????else
342????????????{
343????????????????throw?(new?Exception("TrackingWorkflowEvent?didn't?initialized?or?TrackingInstanceEvent?didn't?tack?event"));
344????????????}
345????????}
346????????
347????????#endregion
348
349????????事件處理#region?事件處理
350
351????????runtime?event#region?runtime?event
352????????void?workflowRuntime_Started(object?sender,?WorkflowRuntimeEventArgs?e)
353????????{
354????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?runtime?started(啟動)\tDateTime(時間)?:?{1}.{2}",?e.IsStarted,?DateTime.Now,?DateTime.Now.Millisecond);
355????????}
356
357????????void?workflowRuntime_ServicesExceptionNotHandled(object?sender,?ServicesExceptionNotHandledEventArgs?e)
358????????{
359????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?runtime?services?exception?not?handled(異常)[{0}]\tDateTime(時間)?:?{1}.{2}",?e.Exception,?DateTime.Now,?DateTime.Now.Millisecond);
360????????}
361
362????????void?workflowRuntime_Stopped(object?sender,?WorkflowRuntimeEventArgs?e)
363????????{
364????????????dic.Clear();
365????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?runtime?stopped(停止)\tDateTime(時間)?:?{1}.{2}",?e.IsStarted,?DateTime.Now,?DateTime.Now.Millisecond);
366????????}
367????????#endregion?runtime?event
368
369????????instance?event#region?instance?event
370????????void?workflowRuntime_WorkflowCompleted(object?sender,?WorkflowCompletedEventArgs?e)
371????????{
372????????????ChangeStatus(e.WorkflowInstance,?WorkflowStatus.Completed);
373????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tcompleted(完成)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
374????????}
375
376????????void?workflowRuntime_WorkflowTerminated(object?sender,?WorkflowTerminatedEventArgs?e)
377????????{
378????????????ChangeStatus(e.WorkflowInstance,?WorkflowStatus.Terminated);
379????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tterminated(結束)\tDateTime(時間)?:?{1}.{2}\tmessage:{3}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond,?e.Exception.Message);
380????????}
381
382????????void?workflowRuntime_WorkflowSuspended(object?sender,?WorkflowSuspendedEventArgs?e)
383????????{
384????????????ChangeStatus(e.WorkflowInstance,?WorkflowStatus.Suspended);
385????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tsuspended(暫停)\tDateTime(時間)?:?{1}.{2}\tmessage:{3}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond,?e.Error);
386????????}
387
388????????void?workflowRuntime_WorkflowResumed(object?sender,?WorkflowEventArgs?e)
389????????{
390????????????ChangeStatus(e.WorkflowInstance,?WorkflowStatus.Running);
391????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tresumed(繼續)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
392????????}
393
394????????void?workflowRuntime_WorkflowAborted(object?sender,?WorkflowEventArgs?e)
395????????{
396????????????ChangeStatus(e.WorkflowInstance,?WorkflowStatus.Terminated);
397????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\taborted(中斷)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
398????????}
399
400????????void?workflowRuntime_WorkflowIdled(object?sender,?WorkflowEventArgs?e)
401????????{
402????????????ChangeStatus(e.WorkflowInstance,?WorkflowStatus.Running);
403????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tidled(空閑)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
404????????}
405
406????????void?workflowRuntime_WorkflowUnloaded(object?sender,?WorkflowEventArgs?e)
407????????{
408????????????RemoveInstance(e.WorkflowInstance);
409????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tunloaded(卸載)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
410????????}
411
412????????void?workflowRuntime_WorkflowPersisted(object?sender,?WorkflowEventArgs?e)
413????????{
414????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tpersisted(持久)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
415????????}
416
417????????void?workflowRuntime_WorkflowLoaded(object?sender,?WorkflowEventArgs?e)
418????????{
419????????????AddInstance(e.WorkflowInstance);
420????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tloaded(加載)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
421????????}
422
423????????void?workflowRuntime_WorkflowCreated(object?sender,?WorkflowEventArgs?e)
424????????{
425????????????AddInstance(e.WorkflowInstance,?WorkflowStatus.Created);
426????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tcreated(創建)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
427????????}
428
429????????void?workflowRuntime_WorkflowStarted(object?sender,?WorkflowEventArgs?e)
430????????{
431????????????ChangeStatus(e.WorkflowInstance,?WorkflowStatus.Running);
432????????????Console.WriteLine("TrackingWorkflowEvent:?Workflow?{0}?\tstarted(啟動)\tDateTime(時間)?:?{1}.{2}",?e.WorkflowInstance.InstanceId,?DateTime.Now,?DateTime.Now.Millisecond);
433????????}
434
435
436????????#endregion?instance?event
437
438
439????????#endregion?事件處理
440
441????????#endregion
442
443????????IDisposable?Members#region?IDisposable?Members
444
445????????public?void?Dispose()
446????????{
447????????????if?(dic?!=?null)
448????????????{
449????????????????dic.Clear();
450????????????????dic?=?null;
451????????????}
452????????}
453
454????????#endregion
455????}
456
457}
使用方便:
????????????trackingworkflowevent?=?new?TrackingWorkflowEvent(workflowRuntime);?????//創建
????????????trackingworkflowevent.TackEvent();??????????????????????????????????????????????????????????//預訂事件
????????????trackingworkflowevent.GetWorkflowStatus(instance);???????????????????????????????????? ??//獲取instance狀態
????????????trackingworkflowevent.UntackEvent();?????????????????????????????????????????????????????//卸載事件
????????????trackingworkflowevent.Dispose();?????????????????????????????????????????????????????????????//消毀

轉載于:https://www.cnblogs.com/net66/archive/2006/10/26/541184.html

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