Filewatcher返回错误。没有重载匹配委托

Question

我写过这个应该检查文件更改的方法。

public static void watch()    
   {    
        FileSystemWatcher watcher = new FileSystemWatcher();    
        watcher.Path = ConfigurationManager.AppSettings["OpticusFileLoc"];    
        watcher.Filter = "sigtrades.xml";    
        watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
       | NotifyFilters.FileName | NotifyFilters.DirectoryName;    


       // watcher.Created += new FileSystemEventHandler(OnChanged);
        watcher.Changed += new FileSystemEventHandler(OnChanged);

        watcher.EnableRaisingEvents = true;

    }

但是，我收到此错误： “'OnChanged'没有重载匹配委托'System.IO.SystemEventHandler'

我哪里错了？

Answer 1

您的OnChanged方法需要the following signature：

void OnChanged(object sender, FileSystemEventArgs e);

是吗？