Write a log file

Question

I have a recent problem . I can upload file in my intetpub/wwwrooot/folder

But I can't write a log file in this same folder ...

I have all the permissions for the network service. Everything is on my server.

DirectoryInfo di = new DirectoryInfo(~/);

// Get a reference to each file in that directory.
FileInfo[] fiArr = di.GetFiles();


string strLogText = di;

// Create a writer and open the file:
StreamWriter log;

if (!System.IO.File.Exists("C:\\inetpub\\wwwroot\\logfile.txt"))
{
    log = new StreamWriter("C:\\inetpub\\wwwroot\\logfile.txt");
}
else
{
    log = System.IO.File.AppendText("C:\\inetpub\\wwwroot\\logfile.txt");
}

// Write to the file:
log.WriteLine(DateTime.Now);
log.WriteLine(strLogText);
log.WriteLine();

// Close the stream:
log.Close();

The error is the access is denied !

It works locally , but on my server it doesnt. On the folder Inetpub , I just need to allow writting for Network service ? That is strange because I can upload file and writting is already enable

Define "can't" in this case. How do you try? Is it in code? Show the code. Do you get an error? Show the error. — David
– David, Commented Dec 5, 2011 at 15:46
I am sure you have reasons for implementing your own logging. However, you might want to check out log4net - logging.apache.org/log4net — Kris Krause
– Kris Krause, Commented Dec 5, 2011 at 16:34
Are there something at your server that hook up your logfile exclusively? — Independent
– Independent, Commented Dec 5, 2011 at 16:53

Community · Accepted Answer · 2017-05-23 10:34:23Z

2

Emged in case of exceptions your code does not close the streams on the log file and this is surely not good.

You should use a using statement around the streams so in any case streams are closed and disposed also in case of exceptions.

As Chris has suggested I would absolutely opt for a logging Framework and I would also avoid writing in that wwwroot folder.

ELMAH or NLog or Log4Net are good and easy alternatives far better than any custom logging lie you are doing right now and the big advantage of these technologies/libraries is that you can change the behaviour at runtime simply by editing the configuration file, no need to rebuild or redeploy anything...

my favourite is actually Log4Net, check these ones for a simple example on how to use it:

http://logging.apache.org/log4net/release/manual/configuration.html

Log4Net in App object?

edited May 23, 2017 at 10:34

CommunityBot

11 silver badge

answered Dec 5, 2011 at 16:41

Davide Piras

44.7k10 gold badges103 silver badges150 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

ChrisLively · Accepted Answer · 2011-12-05 16:33:48Z

0

Depending on the version of your server (windows 2008 and above), that directory has additional protection against writes.

I'd highly recommend you look into ELMAH to do your logging. It gives you a number of options including in memory or database backed and collects a LOT of additional data you might want.

Further, opening up various physical directory locations for write access is a HUGE security no-no.

answered Dec 5, 2011 at 16:33

ChrisLively

88.3k27 gold badges174 silver badges249 bronze badges

Comments

sfuqua · Accepted Answer · 2011-12-06 02:23:07Z

0

On the server, is the web app running under an Application Pool that has alternate credentials, other than the normal network service account? If you haven't done so already, try turning on Auditing to see what user is trying to access the file.

answered Dec 6, 2011 at 2:23

sfuqua

5,8731 gold badge36 silver badges33 bronze badges

Collectives™ on Stack Overflow

Write a log file

3 Answers 3

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related