WF 4.0基礎篇(十七) Bookmark

本文例子說明

Bookmark

Bookmark可使用流程Idle並觸發實例的OnIdle

無返回值Bookmark

要定義具備Bookmark的 Activit,可從 NativeActivity繼承,override [Execute 方法],使用[NativeActivityContext.CreateBookmark方法]添加Bookmark

需要override [ CanInduceIdle 屬性],使其返回值為[True]

可用[實例.ResumeBookmark方法]觸發Bookmark

public 　sealed　class　noResultBookmark　:　NativeActivity　
{
public　InArgument<string>　bookmarkName　{　 get;　set;　}
protected　override　bool　CanInduceIdle
{
get
{　return　true;　}
}
protected　override　void　Execute(NativeActivityContext　context)
{
string　bookmark　=　context.GetValue (bookmarkName);
context.CreateBookmark(bookmark);
System.Console.WriteLine("創建bookmark:{0}",　bookmark);
}
}

例:基本使用

流程

宿主

//===================================================
void　workflowCompleted(WorkflowApplicationCompletedEventArgs　e)
{
instance　=　null;
System.Console.WriteLine("workflowCompleted:{0}",　e.CompletionState.ToString());
}
void　aborted(WorkflowApplicationAbortedEventArgs　e)
{
instance　=　null;
System.Console.WriteLine("aborted　,Reason:{0}",　e.Reason.Message);
}
UnhandledExceptionAction　unhandledExceptionl(WorkflowApplicationUnhandledExceptionEventArgs　e)
{
System.Console.WriteLine("unhandledException:{0}",　e.UnhandledException.Message);
return　UnhandledExceptionAction.Cancel;
}
void　workflowIdel(WorkflowApplicationIdleEventArgs　e)
{
System.Console.WriteLine("Idle:{0}",　e.InstanceId);
System.Console.WriteLine("--------BookmarkName---------------------------");
foreach　(var　item　in　e.Bookmarks)
{
System.Console.WriteLine("{0}",　item.BookmarkName);
}
System.Console.WriteLine("================================");
}
//==================================================
WorkflowApplication　instance　=　null;
private　void　button_Run_Click(object　sender,　RoutedEventArgs　e)
{
instance　=　new　WorkflowApplication(new　WFLibrary.noResultBookmarkWorkflow());
instance.Completed　=　new　Action<WorkflowApplicationCompletedEventArgs>(workflowCompleted);
instance.OnUnhandledException　=　unhandledExceptionl;
instance.Aborted　=　aborted;
instance.Idle　=　workflowIdel;
instance.Run();
}
private　void　button_triggering_Click(object　sender,　RoutedEventArgs　e)
{
string　bookName　=　textBoxBookmark.Text;
if　(instance　!=　null)
{
if　(instance.GetBookmarks().Count(p　=>　p.BookmarkName　==　bookName)　==　1)
{
instance.ResumeBookmark(bookName,　null);
}
else
{
foreach　(var　v　in　instance.GetBookmarks())
{
System.Console.WriteLine("--------請從下面選項中選擇一BookmarkName---------------------------");
System.Console.WriteLine("BookmarkName:{0}:,OwnerDisplayName:{1}",　v.BookmarkName,　v.OwnerDisplayName);
System.Console.WriteLine("================================");
}
}
}
else
{
MessageBox.Show("沒有創ä建實例");
}
}

結果

有返回值Bookmark

要定義具備Bookmark的Activit,可從 NativeActivity<T> 繼 承,override [Execute 方法],使用[NativeActivityContext.CreateBookmark方法]添加Bookmark

需要override [ CanInduceIdle 屬性],使其返回值為[True]

可用[實例.ResumeBookmark方法]觸發Bookmark

public　sealed　class　 resultBookmark<T>　:　NativeActivity<T>
{
public　InArgument<string>　bookmarkName　{　get;　 set;　}

protected　override　bool　CanInduceIdle
{
get
{　return　true;　}
}
protected　override　void　Execute(NativeActivityContext　context)
{
string　bookmark　=　context.GetValue (bookmarkName);
context.CreateBookmark(bookmark,new　BookmarkCallback(bookmarkCallback));
System.Console.WriteLine("創建bookmark:{0}",　bookmark);
}
void　bookmarkCallback(NativeActivityContext　 context,　Bookmark　bookmark,　object　obj)
{
this.Result.Set(context,　(T)obj);
}
}

例: 基本使用

流程

宿主

//===================================================
void　workflowCompleted(WorkflowApplicationCompletedEventArgs　e)
{
instance　=　null;
System.Console.WriteLine("workflowCompleted:{0}",　e.CompletionState.ToString());
}
void　aborted(WorkflowApplicationAbortedEventArgs　e)
{
instance　=　null;
System.Console.WriteLine("aborted　,Reason:{0}",　e.Reason.Message);
}
UnhandledExceptionAction　unhandledExceptionl(WorkflowApplicationUnhandledExceptionEventArgs　e)
{
System.Console.WriteLine("unhandledException:{0}",　e.UnhandledException.Message);
return　UnhandledExceptionAction.Cancel;
}
void　workflowIdel(WorkflowApplicationIdleEventArgs　e)
{
System.Console.WriteLine("Idle:{0}",　e.InstanceId);
System.Console.WriteLine("--------BookmarkName---------------------------");
foreach　(var　item　in　e.Bookmarks)
{
System.Console.WriteLine("{0}",　item.BookmarkName);
}
System.Console.WriteLine("================================");
}
//==================================================
WorkflowApplication　instance　=　null;
private　void　button_Run_Click(object　sender,　RoutedEventArgs　e)
{
instance　=　new　WorkflowApplication(new　WFLibrary.resultBookmarkWorkflow());
instance.Completed　=　new　Action<WorkflowApplicationCompletedEventArgs>(workflowCompleted);
instance.OnUnhandledException　=　unhandledExceptionl;
instance.Aborted　=　aborted;
instance.Idle　=　workflowIdel;
instance.Run();
}
private　void　button_triggering_Click(object　sender,　RoutedEventArgs　e)
{
string　bookName　=　textBoxBookmark.Text;
string　inputValue　=　textBox_Value.Text;
if　(instance　!=　null)
{
if　(instance.GetBookmarks().Count(p　=>　p.BookmarkName　==　bookName)　==　1)
{
instance.ResumeBookmark(bookName,inputValue　);
}
else
{
foreach　(var　v　in　instance.GetBookmarks())
{
System.Console.WriteLine("--------請從下面選項中選擇一BookmarkName---------------------------");
System.Console.WriteLine("BookmarkName:{0}:,OwnerDisplayName:{1}",　v.BookmarkName,　v.OwnerDisplayName);
System.Console.WriteLine("================================");
}
}
}
else
{
MessageBox.Show("沒有創建實例");
}
}

結果

例:在parallel中使用Bookmark

流程

宿主

//===================================================
void　workflowCompleted(WorkflowApplicationCompletedEventArgs　e)
{
instance　=　null;
System.Console.WriteLine("workflowCompleted:{0}",　e.CompletionState.ToString());
}
void　aborted(WorkflowApplicationAbortedEventArgs　e)
{
instance　=　null;
System.Console.WriteLine("aborted　,Reason:{0}",　e.Reason.Message);
}
UnhandledExceptionAction　unhandledExceptionl(WorkflowApplicationUnhandledExceptionEventArgs　e)
{
System.Console.WriteLine("unhandledException:{0}",　e.UnhandledException.Message);
return　UnhandledExceptionAction.Cancel;
}
void　workflowIdel(WorkflowApplicationIdleEventArgs　e)
{
System.Console.WriteLine("Idle:{0}",　e.InstanceId);
System.Console.WriteLine("--------BookmarkName---------------------------");
foreach　(var　item　in　e.Bookmarks)
{
System.Console.WriteLine("{0}",　item.BookmarkName);
}
System.Console.WriteLine("================================");
}
//==================================================
WorkflowApplication　instance　=　null;
private　void　button_Run_Click(object　sender,　RoutedEventArgs　e)
{
instance　=　new　WorkflowApplication(new　WFLibrary.parallelBookmarkWorkflow());
instance.Completed　=　new　Action<WorkflowApplicationCompletedEventArgs>(workflowCompleted);
instance.OnUnhandledException　=　unhandledExceptionl;
instance.Aborted　=　aborted;
instance.Idle　=　workflowIdel;
instance.Run();
}
private　void　button_triggering_Click(object　sender,　RoutedEventArgs　e)
{
string　bookName　=　textBoxBookmark.Text;
string　inputValue　=　textBox_Value.Text;
if　(instance　!=　null)
{
if　(instance.GetBookmarks().Count(p　=>　p.BookmarkName　==　bookName)　==　1)
{
instance.ResumeBookmark(bookName,inputValue　);
}
else
{
foreach　(var　v　in　instance.GetBookmarks())
{
System.Console.WriteLine("--------請從下面選項中選擇一BookmarkName---------------------------");
System.Console.WriteLine("BookmarkName:{0}:,OwnerDisplayName:{1}",　v.BookmarkName,　v.OwnerDisplayName);
System.Console.WriteLine("================================");
}
}
}
else
{
MessageBox.Show("沒有創建實例");
}
}

結果

例:在ParallelForEach中使用Bookmark

流程

參數

 

變量

流程

宿主

//===================================================
void　workflowCompleted(WorkflowApplicationCompletedEventArgs　e)
{
instance　=　null;
System.Console.WriteLine("workflowCompleted:{0}",　e.CompletionState.ToString());
}
void　aborted(WorkflowApplicationAbortedEventArgs　e)
{
instance　=　null;
System.Console.WriteLine("aborted　,Reason:{0}",　e.Reason.Message);
}
UnhandledExceptionAction　unhandledExceptionl(WorkflowApplicationUnhandledExceptionEventArgs　e)
{
System.Console.WriteLine("unhandledException:{0}",　e.UnhandledException.Message);
return　UnhandledExceptionAction.Cancel;
}
void　workflowIdel(WorkflowApplicationIdleEventArgs　e)
{
System.Console.WriteLine("Idle:{0}",　e.InstanceId);
System.Console.WriteLine("--------BookmarkName---------------------------");
foreach　(var　item　in　e.Bookmarks)
{
System.Console.WriteLine("{0}",　item.BookmarkName);
}
System.Console.WriteLine("================================");
}
//==================================================
WorkflowApplication　instance　=　null;
private　void　button_Run_Click(object　sender,　RoutedEventArgs　e)
{
System.Collections.Generic.SortedSet<string>　nameList　=　new　SortedSet<string>();
nameList.Add("wxd");
nameList.Add("wxwinter");
nameList.Add("lzm");
nameList.Add("dd");
System.Collections.Generic.Dictionary<string,　object>　dictionary　=　new　Dictionary<string,　object> ();
dictionary.Add("myNameList",　nameList);
instance　=　new　WorkflowApplication(new　WFLibrary.ParallelForEachWorkflow(),　dictionary);
instance.Completed　=　new　Action<WorkflowApplicationCompletedEventArgs>(workflowCompleted);
instance.OnUnhandledException　=　unhandledExceptionl;
instance.Aborted　=　aborted;
instance.Idle　=　workflowIdel;
instance.Run();
}
private　void　button_triggering_Click(object　sender,　RoutedEventArgs　e)
{
string　bookName　=　textBoxBookmark.Text;
string　inputValue　=　textBox_Value.Text;
if　(instance　!=　null)
{
if　(instance.GetBookmarks().Count(p　=>　p.BookmarkName　==　bookName)　==　1)
{
instance.ResumeBookmark(bookName,inputValue　);
}
else
{
foreach　(var　v　in　instance.GetBookmarks())
{
System.Console.WriteLine("--------請從下面選項中選擇一BookmarkName---------------------------");
System.Console.WriteLine("BookmarkName:{0}:,OwnerDisplayName:{1}",　v.BookmarkName,　v.OwnerDisplayName);
System.Console.WriteLine("================================");
}
}
}
else
{
MessageBox.Show("沒有創建實例");
}
}

結果

例:在ForEach中使用Bookmark

將[在ParallelForEach中使用Bookmark]中的ParallelForEach 換成ForEach

結果

本文 例子下載：http://files.cnblogs.com/foundation/BookmarkSample.rar