C#WinForm使用FileSystemWatcher监测文件定时读取

1.在WinForm中 加入FileSystemWatcher控件
  
  2.实例化FileSystemWatcher对象

 public void FileWatche()
   {
       FileSystemWatcher watch = new FileSystemWatcher();  
       watch.Path = @"";   //监控的路径
       watch.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName |
       NotifyFilters.DirectoryName;
       watch.Filter = "*.*";    // 监控的文件格式
       watch.IncludeSubdirectories = true; // 监控子目录
       watch.Created += new FileSystemEventHandler(OnCreatedFile);   // 有文件创建则触发事件(watch.Created)
       watch.Changed += new FileSystemEventHandler(OnChangedFile);  //有文件改變則觸發事件(watch.Changed)
       watch.EnableRaisingEvents = true; // 启动监控      
   }
   
   //监控多种格式的文件
   public void FileWatche()
   {
      string[] filters = { "*.BMP", "*.JPG", "*.PNG" };
      foreach (string f in filters)
      {
         FileSystemWatcher pwc = new FileSystemWatcher(); 
         pwc.Path = @"";   //监控的路径
         pwc.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName |
         NotifyFilters.DirectoryName;
         pwc.Filter = f;   // 监控的文件格式
         pwc.IncludeSubdirectories = true; // 监控子目录
         pwc.Created += new FileSystemEventHandler(OnCreatedFile);   // 有文件创建则触发事件(watch.Created)
         watch.Changed += new FileSystemEventHandler(OnChangedFile);  //有文件改變則觸發事件(watch.Changed)
         pwc.EnableRaisingEvents = true; // 启动监控
      }
   }

   3文件触发事件
  

  //文档发生改变的是时候，读取数据
    private void OnChangedFile(object sender, FileSystemEventArgs e)
   {    
       string FilePath = e.FullPath;//文件地址
       string FileName = e.Name;//文件名
      
       (sender as FileSystemWatcher).EnableRaisingEvents = false;
       
	   //設置讀取時間，当监测文件改变等待指定的时间才开始读取
        setInternal(FileName,FilePath);
		
       (sender as FileSystemWatcher).EnableRaisingEvents = true;//这样可以保证changed事件可以被重新触发。
   }
   

4定时执行

 public void setInternal(string name,string path)
  {
      System.Timers.Timer timer;
      this.timer = new System.Timers.Timer(9000);//实例化Timer类，设置时间间隔   
      timer.Elapsed += new System.Timers.ElapsedEventHandler((s, e) => copy(s, e, name, path));//当到达时间的时候执行事件 
      timer.AutoReset =false ;//false是执行一次，true是一直执行,当为true时会导致只监测一个文档
      timer.Enabled = true;//设置是否执行System.Timers.Timer.Elapsed事件 
  }

5执行文件读取

public void copy(object source, ElapsedEventArgs e, string name1, string name2)
  {
     
	 //需要执行的操作 
                
  }