Question

My local test server crashes as soon as I’m trying to write to a logfile. I’m using this for an ASP.NET-Page, codebehind is C#.

Structure:

/
 Functions.cs
 index.aspx
 index.aspx.cs

I create an instance of Functions as my index.aspx loads. In Functions, I define a function for logging, which is called from index.aspx.cs and looks like this:

if (_WriterOpen == false)
{
    _Writer = new StreamWriter(_WorkingDir + _Logfile, true);
    _WriterOpen = true;
    _Writer.AutoFlush = true;
}
_Writer.WriteLine(DateTime.Now.ToString() + ": " + String.Format(Note, Args));

_Writer is defined globally for the Class and contains, as you see, a StreamWriter. The class itself has a destructor to close any connections to the files;

~Functions()
{
    _Writer.Flush();
    _Writer.Close();
    _Writer.Dispose();
}

So, when I open up my page, the logs are written but then the server crashes. So I assume the problem is somewhere in the descructor, but I can’t figure out why…

Answer 1

I’d recommend the using statement which automatically invokes the dispose call. For your purposes the code would look something like:

StreamWriter _Writer;

using(_Writer)
{
    if (_WriterOpen == false)
    {
       _Writer = new StreamWriter(_WorkingDir + _Logfile, true);
       _WriterOpen = true;
       _Writer.AutoFlush = true;
    }
    _Writer.WriteLine(DateTime.Now.ToString() + ": " + String.Format(Note, Args));
}

Note I haven’t tested this out but it should work (or at least be close). I’ll update if needed after checking it out

Also see the following two articles:
Article 1
Article 2