首先这是我自己在一个任务需求里面所要用到的，大致的代码如下：我把监视文件和备份文件的方法封装到一个WatcherAndBackup
类中了，但是总感觉封装的不是很好，有大牛能够指出改正之处在此留言，谢谢指点了哈!!,主要监视文件用到的类就是在sysytem.IO
里面的FileSystemWatcher，然后在一个控制台里面创建类WatcherAndBackup的实例并且运行就行
代码语言：javascript复制 1 class WatcherAndBackup
2 {
3 string sourcefile = "";//源文件
4 string targetfile = "";//目标文件
5 string targetPath = "";//目标路径
6 public WatcherAndBackup(string Sourcefile,string Targetfile,string TargetPath)
7 {
8 sourcefile = Sourcefile;targetfile = Targetfile;targetPath = TargetPath;
9 }
10
11 public void backup(string sourcefile,string targetfile,string targetPath)
12 {
13 try
14 {
15 if (!Directory.Exists(targetPath))
16 {
17 Directory.CreateDirectory(targetPath);
18
19 }
20 File.Copy(sourcefile, targetfile, true);
21
22 }
23 catch { }
24 }
25 #region 实时监视文件更改并且备份文件
26 public void watcherfile(string path,string file)
27 {
28 FileSystemWatcher fsw = new FileSystemWatcher(path, file);
29 fsw.Changed = new FileSystemEventHandler(change_watcher);
30 fsw.Created = new FileSystemEventHandler(change_watcher);
31 fsw.Deleted = new FileSystemEventHandler(change_watcher);
32 fsw.Renamed = new RenamedEventHandler(rename_watcher);
33 fsw.EnableRaisingEvents = true;
34 Console.WriteLine("开始监视。。。。");
35 fsw.NotifyFilter = NotifyFilters.Attributes | NotifyFilters.CreationTime | NotifyFilters.DirectoryName | NotifyFilters.FileName
36 | NotifyFilters.LastAccess | NotifyFilters.Security | NotifyFilters.Size | NotifyFilters.LastWrite;
37 fsw.IncludeSubdirectories = true;
38 }
39 public void change_watcher(object sender,FileSystemEventArgs e)
40 {
41
42 var wacher = sender as FileSystemWatcher;
43 wacher.EnableRaisingEvents = false;
44
45 if (e.ChangeType==WatcherChangeTypes.Changed)
46 {
47 Console.WriteLine("正在备份。。。");
48 backup(sourcefile,targetfile,targetPath);
49 Console.WriteLine("备份成功。。。");
50
51 }
52 else if (e.ChangeType==WatcherChangeTypes.Created)
53 {
54 Console.WriteLine("{0},{1},{2}", e.ChangeType, e.FullPath, e.Name);
55 return;
56 }
57 else if (e.ChangeType==WatcherChangeTypes.Deleted)
58 {
59 Console.WriteLine("{0},{1},{2}", e.ChangeType, e.FullPath, e.Name);
60 return;
61 }
62 wacher.EnableRaisingEvents = true;
63 }
64 public void rename_watcher(object sender,RenamedEventArgs e)
65 {
66 Console.WriteLine("{0},{1},{2}", e.ChangeType, e.FullPath, e.Name);
67 }
68 #endregion
69
70 } static void Main(string[] args)
{
WatcherAndBackup bk = new WatcherAndBackup(@"D:ggconfig.xml", @"D:ggbackupconfig.xml", @"D:ggbackup");
bk.watcherfile(@"D:gg", "config.xml");//监视的文件为D:ggconfig.xml
Console.Read();
}在这里解释一下：实例类WatcherAndBackup时分别要写下backup方法的三个参数：sourcefile、targefile、targePath，也就是备份方法的源文件、目标文件、目标文件的目录，然后在change_watcher方法当中为什么会有这几局代码：
代码语言：javascript复制var wacher=sender as FileSystemWatcher;
wacher.EnableRaisingEvents=false;然后在方法后面：
代码语言：javascript复制wacher.EnableRaisingEvents=true;其实如果不加入这几句代码会出现当监控到文件修改时会触发两次changed方法，这个修改方法是我在网上找到的一个修改方法
好了，基本也说完了。。。有什么不正确的地方请各位大牛指正，本就打着学习的态度写下的。。嘿嘿！！
