WF本质论第一章的代码
写书的那位大师丢三落四,代码没有拷贝完全,导致我花了些时间整理了这些代码,整理这些代码要感谢网上的一位老兄,可惜我不知道他的名字了。
今天在我的硬盘里发现了这些代码,决定发布上来共享。大家好才是真的好。
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using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Runtime.Remoting.Messaging;
namespace WF
{
public class Program
{
static void Main()
{
BookmarkManager mgr = new BookmarkManager();
OpenSesame os = new OpenSesame();
os.Start(mgr);
mgr.Resume("read", null);
Console.WriteLine("Press any key to continue
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Console.ReadKey();
}
}
/// <summary>
/// 书签类
/// </summary>
[Serializable]
public class Bookmark
{
private string name;
private object payload;
private BookmarkLocation bookmarkLocation;
private BookmarkManager bookmarkManager;
public Bookmark(string name, BookmarkLocation continueAt)
{
this.name = name;
this.bookmarkLocation = continueAt;
}
public string Name { get { return this.name; } }
public BookmarkLocation ContinueAt { get { return this.bookmarkLocation; } }
public object Payload { get { return this.payload; } set { this.payload = value; } }
/// <summary>
/// 书签位置属性
/// </summary>
public BookmarkManager BookmarkManager { get { return this.bookmarkManager; } set { this.bookmarkManager = value; } }
}
/// <summary>
/// 书签位置(委托类型)
/// </summary>
/// <param name="resumed"></param>
public delegate void BookmarkLocation(Bookmark resumed);
public class BookmarkManager
{
private delegate string AsyncReadLine();
private IList<Bookmark> bookmarks;
private int currentIndex = -1;
public void Add(Bookmark bookmark)
{
if (this.bookmarks == null)
this.bookmarks = new List<Bookmark>();
bookmark.BookmarkManager = this;
bookmarks.Add(bookmark);
}
public void Remove(Bookmark bookmark)
{
if (this.bookmarks != null && this.bookmarks.Count > 0)
this.bookmarks.Remove(bookmark);
}
public void Resume(string bookmarkName, object payload)
{
foreach (Bookmark bk in this.bookmarks)
if (bk.Name.Equals(bookmarkName) && bk.ContinueAt != null)
{
this.currentIndex = this.bookmarks.IndexOf(bk);
BeginReadLine(new AsyncCallback(AsyncCallback), payload);
}
}
private void AsyncCallback(IAsyncResult ar)
{
Bookmark bk = this.bookmarks[currentIndex];
bk.Payload = EndReadLine(ar);
bk.ContinueAt.Invoke(bk);
}
private IAsyncResult BeginReadLine(AsyncCallback asyncCallback, object state)
{
AsyncReadLine asyncReadLine = new AsyncReadLine(Console.ReadLine);
return asyncReadLine.BeginInvoke(asyncCallback, state);
}
private string EndReadLine(IAsyncResult ar)
{
AsyncReadLine reader = (AsyncReadLine)((AsyncResult)ar).AsyncDelegate;
return reader.EndInvoke(ar);
}
}
[Serializable]
public class OpenSesame
{
private string key;
public void Start(BookmarkManager mgr)
{
this.key = DateTime.Now.Millisecond.ToString();
Console.WriteLine("Here is the key: {0}", key);
mgr.Add(new Bookmark("read", this.ContinueAt));
}
private void ContinueAt(Bookmark resumed)
{
string s = (string)resumed.Payload;
BookmarkManager mgr = resumed.BookmarkManager;
mgr.Remove(resumed);
if (this.key.Equals(s))
Console.WriteLine("Welcome, my friends!");
else
Console.WriteLine("Sorry, you press a wrong key.");
}
}
}