msdn上一段關於使用filesystemwatch類的例子，今天寫的乙個功能使用到監視檔案系統的應用，看到這段**，很有啟發，留作紀念。**如下：
public class watcher
[permissionset(securityaction.demand, name="fulltrust")]
public static void run()
// create a new filesystemwatcher and set its properties.
filesystemwatcher watcher = new filesystemwatcher();
watcher.path = args[1];
/* watch for changes in lastaccess and lastwrite times, and
the renaming of files or directories. */
watcher.notifyfilter = notifyfilters.lastaccess | notifyfilters.lastwrite
| notifyfilters.filename | notifyfilters.directoryname;
watcher.includesubdirectories = true
; // 這個屬性用於指定是否監視指定目錄中的子目錄，很有用
// only watch text files.
watcher.filter = "*.*";
// add event handlers.
watcher.changed += new filesystemeventhandler(onchanged);
watcher.created += new filesystemeventhandler(onchanged);
watcher.deleted += new filesystemeventhandler(onchanged);
watcher.renamed += new renamedeventhandler(onrenamed);
// begin watching.
watcher.enableraisingevents = true;
// wait for the user to quit the program.
console.writeline("press /'q/' to quit the sample.");
while(console.read()!='q');
}// define the event handlers.
private static void onchanged(object source, filesystemeventargs e)
private static void onrenamed(object source, renamedeventargs e)
renamed to ", e.oldfullpath, e.fullpath);}}
**：
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