0

我有一个方法

 private string sLogFormat;
        private string sErrorTime;

        public void CreateLogFile(string path, string msg)
        { 
            //sLogFormat used to create log files format :
            // dd/mm/yyyy hh:mm:ss AM/PM ==> Log Message
            sLogFormat = DateTime.Now.ToShortDateString().ToString() + " " + DateTime.Now.ToLongTimeString().ToString() + " ==> ";

            //this variable used to create log filename format "
            //for example filename : ErrorLogYYYYMMDD
            string sYear = DateTime.Now.Year.ToString();
            string sMonth = DateTime.Now.Month.ToString();
            string sDay = DateTime.Now.Day.ToString();
            sErrorTime = sYear + sMonth + sDay;

            StreamWriter sw = new StreamWriter(path + sErrorTime, true);
            sw.WriteLine(sLogFormat + msg);
            sw.Flush();
            sw.Close();

        }

另一个方法 run() 在某处触发 Onchanged 处理程序（它在更精确地更改文件夹内容时触发）here 

 public static void Run()
        {
            // Create a new FileSystemWatcher and set its properties.
            FileSystemWatcher watcher = new FileSystemWatcher();
            watcher.Path = "C:/model_RCCMREC";

            /* 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;
            //   watch wav files.
            watcher.Filter = "*.wav";

            // Add event handlers. 
            watcher.Created += new FileSystemEventHandler(OnChanged);

            // Begin watching.
            watcher.EnableRaisingEvents = true;
        }

和 OnChanged 处理程序为

public static  void OnChanged(object source, FileSystemEventArgs e)
        {  
            try
            { 

                //access last folder(newly created one is suposedly at last position)
                var directory = new DirectoryInfo("C:/model_RCCMREC");
                var myFile = (from f in directory.GetFiles() orderby f.LastWriteTime descending select f).First();

                //2.Split the file name.
            }


            catch
            {
//I WANT TO ACCESS THE METHOD CreateLogFile(x,y) HERE

            }
        }

我无法正常从 OnChanged 处理程序访问方法 CreateLogFile()。如何访问它？

4

2 回答 2

1

似乎 OnChanged 应该是非静态的。通常只有一个特定的实例会调用 OnChanged。这是因为某事物发生变化的知识被封装在它自身的实例中。从你的 OnChanged 中删除静态，你就可以开始了。

或者如果你不能/不想让你的 OnChanged 非静态，你可以让你的 CreateLogFile 静态，我看不出有任何理由在你的方法之外删除你的变量：

    public static void CreateLogFile(string path, string msg)
    { 
        string sLogFormat;
        string sErrorTime;

        //sLogFormat used to create log files format :
        // dd/mm/yyyy hh:mm:ss AM/PM ==> Log Message
        sLogFormat = DateTime.Now.ToShortDateString().ToString() + " " + DateTime.Now.ToLongTimeString().ToString() + " ==> ";

        //this variable used to create log filename format "
        //for example filename : ErrorLogYYYYMMDD
        string sYear = DateTime.Now.Year.ToString();
        string sMonth = DateTime.Now.Month.ToString();
        string sDay = DateTime.Now.Day.ToString();
        sErrorTime = sYear + sMonth + sDay;

        StreamWriter sw = new StreamWriter(path + sErrorTime, true);
        sw.WriteLine(sLogFormat + msg);
        sw.Flush();
        sw.Close();

    }
于 2013-10-25T08:52:55.300 回答
0

你有两种方法：

1- 如果您的 Logger 类是非静态的，请使用 YourLoggerClass log = new YourLoggerClass() 创建一个新的 logger 对象；做空隙

2- 将您的 Logger 类设为静态，这样您就可以在任何地方轻松使用它：

private static string sLogFormat;
private static string sErrorTime;

public static void CreateLogFile(string path, string msg)
{
     ...
于 2013-10-25T08:56:06.283 回答