File protection between webservice calls

[nano2k]

Hi
My C# webservice uses a file to store some (short) information between
calls.
One method creates/updates the content of a file, another reads it.
What is the best method to avoid issues like "file is already opened by
another process", etc between calls?
Using Monitor.Enter(...) and Monitor.Exit(...) (or lock statement in
C#) will gracefully solve my problem in every situation?

Thanks.
Adi.

 

[Mariano Omar Rodriguez]

You'll need execute the Dispose method instead of close.

 

[nano2k]

Hi

Thanks for your response.
Below is a code snipet from one of my webservice methods:

string fName = Path.Combine(path, "schemaDate.dat");
lock(m_syncToken) {
StreamWriter sw = File.CreateText(fName);
try{
sw.Write(m_schemaDate.ToString(CultureInfo.InvariantCulture));
}
finally{
sw.Close();
}
}

m_syncToken is defined as:
private static object m_syncToken;

My question is: is this pattern powerful enough to ensure exclusive
acces to only one request? I'm using .NET Framework 1.1 and IIS 5.1.


Mariano Omar Rodriguez a scris:

 

[Mariano Omar Rodriguez]

This code only assures single access to the file if only a worker process is
running at the time.
Ahother thing is that you need call Dispose instead of Close.

 

[nano2k]

Dispose method of what object?


Mariano Omar Rodriguez a scris: