Question

This is main program.cs

LogError.WriteError("Application started: " + DateTime.Now + Environment.NewLine);
            try
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new CrawlerApp());
            }
            catch (Exception e)
            {
                LogError.WriteError(e);
            }
            LogError.WriteError("Application closed: " + DateTime.Now + Environment.NewLine);

and this is LogError class

public static class LogError
    {
        public static void WriteError(Exception e)
        {
            WriteError("Message: " + e.Message + Environment.NewLine + "Stack trace: " + e.StackTrace);
        }

        public static void WriteError(string error)
        {
            try
            {
                StreamWriter sw = File.AppendText("log.txt");
                sw.WriteLine(DateTime.Now + Environment.NewLine);
                sw.WriteLine(error + Environment.NewLine);
                sw.WriteLine(Environment.NewLine);
                sw.Close();
            }
            catch (Exception)
            {
                //
            }
        }
    }

When i publish application and run it log.txt file is never created. If i run application from bin/debug folder then works. Why when i publish app logging not working. I am using win 2003 OS.

Answer 1

File.AppendText only works if the file already exists: http://msdn.microsoft.com/en-us/library/system.io.file.appendtext.aspx. This link also has this sample code:

string path = @"c:\temp\MyTest.txt";
    // This text is added only once to the file.
    if (!File.Exists(path)) 
    {
        // Create a file to write to.
        using (StreamWriter sw = File.CreateText(path)) 
        {
            sw.WriteLine("Hello");
            sw.WriteLine("And");
            sw.WriteLine("Welcome");
        }   
    }

    // This text is always added, making the file longer over time
    // if it is not deleted.
    using (StreamWriter sw = File.AppendText(path)) 
    {
        sw.WriteLine("This");
        sw.WriteLine("is Extra");
        sw.WriteLine("Text");
    }