C # Simple Write log

Self-organized a simple write log class, convenient for later use again.

Description: CS Program, program startup directory, automatically create log directory, write logs. Logs are recorded by day, and daily logs are saved as a TXT file.

 <summary>///////////////////////</summary> public class Logmanager {Priv        Ate static string logdirectory = Application.startuppath + @ "\log\";        <summary>////The maximum number of logs saved///</summary> private static int maxlogcount = 365;                public static void Write (String msg) {try {deletelog (); if (! System.IO.Directory.Exists (logdirectory)) {System.IO.Directory.CreateDirectory (Logdirec                Tory); } String name = DateTime.Now.Year.ToString () + DateTime.Now.Month.ToString (). PadLeft (2, ' 0 ') + DateTime.Now.Day.ToString ().                PadLeft (2, ' 0 ');                String datapath = logdirectory + name + ". txt"; if (System.IO.File.Exists (datapath))//Append {using (FileStream fs = new FileStream (datapat                   H, Filemode.append)) {      using (StreamWriter SW = new StreamWriter (FS)) {//start writing Sw.                            WriteLine ("\ n"); Sw.                            WriteLine ("Current time:" + DateTime.Now.ToString ()); Sw.                            WriteLine ("Log message:" + msg); Clears the buffer sw.                            Flush (); Close the stream SW.                            Close (); Fs.                        Close ();  }}} else//create {using (FileStream fs = New FileStream (DataPath, FileMode.Create)) {using (StreamWriter SW = new Strea Mwriter (FS)) {//start writing SW.                            WriteLine ("Current time:" + DateTime.Now.ToString ()); Sw.                            WriteLine ("Log message:" + msg);                   emptying buffers         Sw.                            Flush (); Close the stream SW.                            Close (); Fs.                        Close (); }}}} catch {}} public STA                tic void Write (Exception ex) {try {deletelog (); if (! System.IO.Directory.Exists (logdirectory)) {System.IO.Directory.CreateDirectory (Logdirec                Tory); } String name = DateTime.Now.Year.ToString () + DateTime.Now.Month.ToString (). PadLeft (2, ' 0 ') + DateTime.Now.Day.ToString ().                PadLeft (2, ' 0 '); String datapath = logdirectory + name + ". txt";//File format: 20170606.txt if (System.IO.File.Exists (datapath))//                    Append {using (FileStream fs = new FileStream (DataPath, Filemode.append)) {using (StreamWriter SW = New StreamWriter (FS)) {//begins writing to SW.                            WriteLine ("\ n"); Sw.                            WriteLine ("Current time:" + DateTime.Now.ToString ()); Sw. WriteLine ("Exception info:" + ex.)                            Message); Sw. WriteLine ("Exception object:" + ex.)                            Source); Sw. WriteLine ("Call stack:" + ex.)                            StackTrace); Sw. WriteLine ("Trigger method:" + ex.)                            TargetSite); Clears the buffer sw.                            Flush (); Close the stream SW.                            Close (); Fs.                        Close ();  }}} else//create {using (FileStream fs = New FileStream (DataPath, FileMode.Create)) {using (StreamWriter SW = new Strea Mwriter (FS)) {//start writing SW. WriteLine ("Current time: "+ DateTime.Now.ToString ()); Sw. WriteLine ("Exception info:" + ex.)                            Message); Sw. WriteLine ("Exception object:" + ex.)                            Source); Sw. WriteLine ("Call stack:" + ex.)                            StackTrace); Sw. WriteLine ("Trigger method:" + ex.)                            TargetSite); Clears the buffer sw.                            Flush (); Close the stream SW.                            Close (); Fs.                        Close (); }}}} ' catch {}}///&LT;SU mmary>///delete Log//</summary> private static void Deletelog () {Directory            Info dic = new DirectoryInfo (logdirectory); Don't have to delete the logs every day, remove the IF (!) 10 days. (            DateTime.Now.Day% = = 0)) {return; } if (dic. Exists) {var files = dic.     GetFiles ();           if (Files.                Length < Maxlogcount) return;                list<int> names = new list<int> (); for (int i = 0; i < files. Length; i++) {String strname = Path.getfilenamewithoutextension (Files[i].                    Name);                    int name; if (int. TryParse (strname, out name)) {names.                    ADD (name); }} names. Sort ();//Ascending//names. Reverse ();//descending for (int i = 0; i < names. Count-maxlogcount; i++) {String path = System.IO.Path.Combine (Logdirectory, Names[i].                    ToString () + ". txt");                File.delete (path); }            }        }    }

　　

C # Simple Write log