State.Terminated

[PaulZ]

I have coded the following:
if (State == State.Terminated)
{Print("ProgramEnd");}

The result is 4x a printed statement: ProgramEnd.

Why do I get more than 1 printed statement of "ProgramEnd"?
Are there more occasions of State.Terminated in one Strategy Analyzer run?

[NinjaTrader_PatrickH]

Hello PaulZ,

Thank you for your post.

The Termianted State would be called for any strategy and any strategy instance. This is explained in further detail at the following link: http://ninjatrader.com/support/helpG...fecycle_of.htm

Please let me know if you have any questions.

[PaulZ]

I find the explanation very confusing and don't understand why NT8 is better than NT7 on this.

I want to perform a calculation on my trades (NT8: SystemPerformance.AllTrades) once at the completion of a single strategy.
With NT7 I used OnTermination() and this worked perfectly OK.
With NT8 I use "if (State == State.Terminated)" and this resuts in 4 calculations. I do not understand why this is happening and I do not want 4 calculations but a single calculation, like I had in NT7.
Can you please help?

[NinjaTrader_PatrickH]

Hello PaulZ,

Thank you for your response.

You can use a bool in NinjaTrader 8 to determine when an instance is actually ran over the data. The example below if taken from the lower section of the Help Guide article "Understanding the life cycle of your NinjaScript objects".

// custom flag to help time termination logic
private bool toolBarNeedsReset = false;
 
protected override void OnStateChange()
{
  if (State == State.SetDefaults)
  {
    Name = "State lifetime indicator";
  }
  else if (State == State.Historical)
  {
    // before indicator starts historical processing
    // add a custom tool bar using a custom method
    AddToolBarButton(); // this is a pseudo-method for example purposes
    toolBarNeedsReset = true; // use a flag to track this logic was executed
  }
 
  else if (State == State.Terminated)
  {
    // here we intend to remove the custom tool bar when the indicator shuts down
    if (toolBarNeedsReset) // flag is only true after actually added
        RemoveToolBarButton();
  }
}

Reference: http://ninjatrader.com/support/helpG...fecycle_of.htm

State.Terminated is included for each object's instance to assist in cleaning up resources. This was not present in prior versions of the NinjaTrader platform.

Please let me know if you have any questions.