public static void saveLogMsg(string msg) { string filepath = @"c:\log_monitoring\"; string filename = PublicMehotd.RetStringPersianCalenderwithDash() + "-" + DateTime.Now.Hour.ToString("00") + ".txt"; checkFileAndFolder(filename); using (System.IO.StreamWriter file = File.AppendText(filepath + filename)) { file.WriteLine("\n msg = " + msg); file.WriteLine("\n datep = " + PublicMehotd.RetStringPersianCalender()); file.WriteLine("\n timep = " + PublicMehotd.RetStringLocalTime()); } }