本文实例讲述了C#监控文件夹变化的方法。分享给大家供大家参考。具体实现方法如下：
当需要监控某一文件，FileSystemWatcher类提供了Created, Deleted,Rename等事件。
就拿FileSystemWatcher的Created事件来说，该事件类型是FileSystemEventHandler。
复制代码 代码如下:
public delgate void FileSystemEventHandler(Object sender, FileSystemEventArgs e)
其中参数：
sender表示事件的发起者
e表示事件参数
在C盘创建temp文件夹。
客户端。
复制代码 代码如下:
class Program
{
static void Main(string[] args)
{
var watcher = new FileSystemWatcher(@"c:\temp");
watcher.EnableRaisingEvents = true; //启用FileSystemWatcher
watcher.Created += new FileSystemEventHandler(OnCreated);
watcher.Deleted += new FileSystemEventHandler(OnDeleted);
watcher.Renamed += new RenamedEventHandler(OnRenamed);
Console.ReadKey();
}
static void OnDeleted(object sender, FileSystemEventArgs e)
{
Console.WriteLine("{0}:{1}", e.ChangeType, e.Name);
}
static void OnCreated(object sender, FileSystemEventArgs e)
{
Console.WriteLine("{0}:{1}", e.ChangeType, e.Name);
}
static void OnRenamed(object sender, RenamedEventArgs e)
{
Console.WriteLine("{0}:原文件名{1},新文件名{2}", e.ChangeType, e.OldName, e.Name);
}
}
{
static void Main(string[] args)
{
var watcher = new FileSystemWatcher(@"c:\temp");
watcher.EnableRaisingEvents = true; //启用FileSystemWatcher
watcher.Created += new FileSystemEventHandler(OnCreated);
watcher.Deleted += new FileSystemEventHandler(OnDeleted);
watcher.Renamed += new RenamedEventHandler(OnRenamed);
Console.ReadKey();
}
static void OnDeleted(object sender, FileSystemEventArgs e)
{
Console.WriteLine("{0}:{1}", e.ChangeType, e.Name);
}
static void OnCreated(object sender, FileSystemEventArgs e)
{
Console.WriteLine("{0}:{1}", e.ChangeType, e.Name);
}
static void OnRenamed(object sender, RenamedEventArgs e)
{
Console.WriteLine("{0}:原文件名{1},新文件名{2}", e.ChangeType, e.OldName, e.Name);
}
}
当然，可以通过 watcher.Renamed += OnCreated;注册事件。
希望本文所述对大家的C#程序设计有所帮助。
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