write file need to optimised for heavy traffic

Question

i am very new to C#, and this is my first question, please be gentle on me

I am trying to write a application to capture some tick data from the data provider, below is

Answer 1

You need to create a field for the stream instead of a local variable. Initialize it in constructor once and don't forget to close it somewhere. It's better to implement IDisposable interface and close the stream in Dispose() method.

IDisposable

class MyClass : IDisposable {
    private StreamWriter _writer;

    MyClass() {
        _writer = File.App.....;
    }

    void zf_TickEvent(object sender, ZenFire.TickEventArgs e)
    {

        output myoutput = new output();

        myoutput.time = e.TimeStamp;
        myoutput.product = e.Product.ToString();
        myoutput.type = Enum.GetName(typeof(ZenFire.TickType), e.Type);
        myoutput.price = e.Price;
        myoutput.volume = e.Volume;


        _writer.Write(myoutput.time.ToString(timeFmt) + ",");
        _writer.Write(myoutput.product + "," );
        _writer.Write(myoutput.type + "," );
        _writer.Write(myoutput.price + ",");
        _writer.Write(myoutput.volume + ",");

    }

    public void Dispose() { /*see the documentation*/ }
}