Problem in reading a log file

[m samar]

Hi every one I have a log file that continually is filling by a application. How can I read the log file? I tried

_StreamReader tr=new StreamReader("d:\\\\theLogFile.txt");
        MessageBox.Show(tr.ReadLine());_

but got "The process cannot access the file because it is being used by another process." error. help please? thanks.

[Keith Barrow]

Fundamentally, something has the file open for it's exclusive use. Most likely, whatever is writing to the log has it locked. Another possibility is that, if you have the log open in notepad / word/ other text editor it locked by this.

[Luc Pattyn]

Hi, if your app-under-test is logging to a file by opening a file once, and writing to it, and finally closing it upon exit, then no other app can read that file while the AUT is running. What I often do is keep the logfile closed and add a line of text to it using

public void log(string s) {
File.AppendAllText(logfileName, s+Environment.NewLine);
}

And for apps that run for several hours, I switch logfiles regularly, so each file remains limited in size, can be deleted when no longer useful, can be copied/emailed to another location, etc. :)

Luc Pattyn [Forum Guidelines] [My Articles]

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[m samar]

Uufortunately the logger application does not release the log file during running... anyway... thank you for your answers