从静态例程 c# 访问方法

本文关键字：访问 方法 例程 静态 | 更新日期: 2023-09-27 18:36:47

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（） 在某个地方触发 Onchanged 处理程序（当文件夹内容更精确地更改时触发）这里 

 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 处理程序作为 

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的处理程序访问方法CreateLogFile（）。我怎样才能访问它？

从静态例程 c# 访问方法

似乎OnChanged应该是非静态的。通常只有特定的实例会调用 OnChanged。这是因为某物变化的诺拉格被包裹在它本身的实例中。从您的OnChanged中删除静态，您就可以开始了。

或者，如果您不能/不想使您的OnChanged成为非静态的，则可以将CreateLogFile设置为静态的，我认为没有任何理由在您的方法之外减少变量：

    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();
    }

你有两种方法：

1-如果您的记录器类是非静态的，请使用您的记录器类日志 = 新的您的记录器类（）;并做空洞

2-使您的记录器类静态，使您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)
{
     ...
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