Streamwrite in Strategy

[eurostoxx trader]

I am having problems trying to use the streamwriter in my strategy. I know this can be done (from reading some posts) but I am getting the following error

The process cannot access the file 'C:\C# Files\Test\LevelRetest1.txt' because it is being used by another process.

I have added the "Using System.IO" in the declarations,set the path and created a stream reader object

// This sets the path in which the text file will be created.
private string path = @"C:\C# Files\Test\" + "LevelRetest1.txt";

// Creates a StreamWriter and a StreamReader object
private System.IO.StreamWriter sw;

i thought I could just then write a line in the OnBarUpdate() by adding the following
sw.WriteLine ("Text");

But I keep getting that error so obviously I am doing it wrong. Any thoughts

[NinjaTrader_RyanM1]

Hello eurostoxx trader,

Have you seen the reference sample available on this:

http://www.ninjatrader.com/support/forum/showthread.php?t=3475

Work closely from that sample and let us know if you are still having issues.