Log file throwing error, already in use

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Hi, i am trying to log error into a Application folder(its windows app). What i am trying to do is first check whether a file exists , if not create a new file or if it does exists write the error to the file.
But the problem i am facing is that the path of file. I want the Logs to be in Log folder inside bin. But how can i access that. If i take Applcation.StartUp it goes inside the debug folder and since the process is being done the file writing fails with the error"File already in use".
So how can i handle this. My desired path in ...\bin\Log..

Thanks

Posted 23-Mar-14 20:25pm

Arjun Menon U.K

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2 solutions

Solution 2

Hi

Can you try this to access the log folder inside bin?

string execPath = AppDomain.CurrentDomain.BaseDirectory.ToString();
           DirectoryInfo diInfo  = Directory.GetParent(execPath);
           string logPath = Path.Combine(diInfo.Parent.FullName, "logs");

Regards
Dominic

Posted 23-Mar-14 21:13pm

Dominic Abraham

Updated 23-Mar-14 21:14pm

v2

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Mehdi Gholam · Accepted Answer · 2014-03-23T20:29:00

Solution 1

Use an existing component like log4net or my article : Mini Drop-in Replacement for log4net[^]

Posted 23-Mar-14 20:29pm

Mehdi Gholam

Comments

Arjun Menon U.K 24-Mar-14 2:52am

if (!File.Exists(path))
{
File.Create(path);
TextWriter tw = new StreamWriter(path);
tw.WriteLine(message);
tw.Close();
}
else if (File.Exists(path))
{
TextWriter tw = new StreamWriter(path);
tw.WriteLine(message);
tw.Close();
}

Any problem in this??

Mehdi Gholam 24-Mar-14 2:58am

Try the following instead :

File.AppendAllText(path, message);

Arjun Menon U.K 24-Mar-14 3:04am

what if the file don't exists?

Mehdi Gholam 24-Mar-14 3:05am

http://msdn.microsoft.com/en-us/library/ms143356%28v=vs.110%29.aspx

Arjun Menon U.K 24-Mar-14 3:07am

Can you please tell me , why if the File.Create(path); followed by the File.Append / stream wirter write function throwing error , already in use?

Mehdi Gholam 24-Mar-14 3:10am

I can't without debugging your running application.

Arjun Menon U.K 24-Mar-14 3:14am

string path = Directory.GetParent(Path.GetDirectoryName(Application.StartupPath)) + "\\Log\\Log.txt";
if (!File.Exists(path))
{
// Create a file to write to.
string createText = "Date:-" + DateTime.Now + ".Error:-" + message + Environment.NewLine;
File.WriteAllText(path, createText);
}
else
{
// This text is always added, making the file longer over time
// if it is not deleted.
string appendText = "Date:-" + DateTime.Now + ".Error:-" + message + Environment.NewLine;
File.AppendAllText(path, appendText);
}

This worked thanks