Writing an array to a text file

Question

There is an array with timers work intervals. Each timer must record these intervals in a text file.

static void Main(string[] args) { int[] timerDelays = { 10000, 15000, 10000 }; foreach (int d in timerDelays) { var timer = new System.Timers.Timer(d); timer.Elapsed += OnTimeout; timer.AutoReset = true; timer.Enabled = true; } Console.Read(); } private static void OnTimeout(Object source, ElapsedEventArgs e) { int[] timerDelays = { 10000, 15000, 10000 }; StreamWriter strwrt = new StreamWriter("C:\\пример.txt", true); strwrt.WriteLine(timerDelays); Console.WriteLine("Нажмите ENTER что бы выйти из программы"); Console.Read(); }

Here is my code. Tell me or give another example, please. I have an error when writing to the file.

There is an array of timer, which timer runs every 1 sec, 1.5 sec and 1 sec.
@ MaksimKutovoy File.WriteAllLines (path, timerDelays); // there is an error
Need to solve one problem - Simultaneous access to the file from different timers.
@ MaksimKutova at least show, using my example, writing an array to a file, please !!!

PashaPash ♦ PashaPash 42.4k 10 golden marks 64 silver marks 130 bronze marks · Accepted Answer · 2016-05-11T06:38:11

 class Program { static void Main(string[] args) { // миллисекунда - это 1/1000 секунды int[] timerDelays = { 1000, 1500, 1000 }; foreach (int d in timerDelays) { var timer = new System.Timers.Timer(d); timer.Elapsed += OnTimeout; timer.AutoReset = true; timer.Enabled = true; } // ожидание в Main, а не в обработчике таймера - таймеры будут работать в фоне Console.WriteLine("Нажмите ENTER что бы выйти из программы"); Console.Read(); } // общий для всех потоков/таймеров объект private static object fileLock = new object(); private static void OnTimeout(Object source, ElapsedEventArgs e) { int[] timerDelays = { 10000, 15000, 10000 }; // блокировка на время записи lock (fileLock) { // запись массива как трех строк, в новый файл или в конец существующего File.AppendAllLines(@"C:\temp\пример.txt", timerDelays.Select(t => t.ToString())); } } }

Answer 2 · 2016-05-11T05:12:01

There are two difficulties in the task:

1. Write array to file

MSDN: File.WriteAllLines

File.WriteAllLines - Creates a new file, writes the specified array of strings to this file using the specified encoding, then closes the file.

Just in case, reading from a file: MSDN: File.ReadAllLines

File.ReadAllLines - Opens a text file, reads all lines of the file into an array of strings, and then closes the file.

 static void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) { int[] timerDelays = { 10000, 15000, 10000 }; string[] str = timerDelays.Select(s => s.ToString()).ToArray(); string path = @"c:\temp\пример.txt"; if (!File.Exists(path)) File.WriteAllLines(path, str); else File.AppendAllLines(path, str); }

2. Simultaneous access to a file from different timers

one of the solutions. The FileStream has the 4th flag in the FileShare.None constructor, which rejects the use of the file if it is busy. Scroll it in while (true) until access appears.

  static void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) { int[] timerDelays = { 10000, 15000, 10000 }; FileStream fs = null; while (true) { try { fs = new FileStream(@"C:\temp\пример.txt", FileMode.Append, FileAccess.Write, FileShare.None); break; } catch { System.Threading.Thread.Sleep(10); } } using (StreamWriter sr = new StreamWriter(fs)) { foreach (int t in timerDelays) { sr.WriteLine(t); Console.WriteLine(t); } sr.Close(); sr.Dispose(); } fs.Close(); fs.Dispose(); }

I know that there are two difficulties, and I ask you to show an example of a code to write to a file, and with the timer I will try it myself.
@ propro17: Well, open the same documentation, everything is painted there.

Writing an array to a text file

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