ExecControl.Recalculate() error  [SOLVED]

Hello,
My strategy is generating the below error message upon executing the
ExecControl.Recalculate();
line (ie, this is the line 377 that is mentioned in the error message).
The code in the last bar calculation is running fine on its own. When the error occurs, the code execution does not even get into the CalcBar() method. What are the reasons why the recalculate call would fail like this?
Thank you

Here is the error message:
ManagedStudies.details._ELAPI_exception_Wrap_: Error in the application.
at ManagedStudies.details._ELAPI_exception_Wrap_Generator.raise(_ELAPI_exception_Wrap_Generator* )
at PowerLanguage.CExecutionControl.Recalculate()
at PowerLanguage.Strategy.EE_RTraderV3_6.OnRecalcLastBarAfterEvent() in c:\ProgramData\TS Support\MultiCharts .NET64\StudyServer\Techniques\CS\EE_RTraderV3_6.Strategy.CS:line 377 Exception caught.

Hello eroleyikan,

You do not need to catch this exception as it is an internal message for the system.

Thanks Henry.
I can do that, but I will still have the problem of my strategy not recalculating.

I would like my strategy to recalculate based on real-time price conditions. I implemented the DataLoader example from the programming guide. I can get the current price of the symbol I am on. I want to be able to recalculate the strategy if a certain condition about the current price is true.

My sample code is below. As you can see in ResultCallBack() method, when real-time price is greater than the last price, the strategy should recalculate. But it does not.

What do you think is wrong?
Thanks
Erol

Recalculate should be called from the CalcBar.

Henry,
Thanks for your response, I am not clear though... calcBar is what gets re-run when the recalculate command is issued, is it not? How does it make sense to call recalculate() from withing calcBar?

Can you point to an example or thread that demonstrates this behavior?
Thank you
Erol

Here is a sample code for you:

Thanks Henry, this is working without an error now. But the last bar code is getting executed multiple times every second even though I am setting needRecalc = false each time.
In the example code below, I tried to recalculate only ONCE when the price changes but the lastbar code seems to run 4 or 5 times each iteration. What event is kicking off this repetition?


As an example, the code below is generating an output like this:

rt.Close != LastPrice is true.
In ResltCallBack() Current Price: 78.105 Last Price: 78.104 rt.time: 9:15 AM
In lastbar code 09:14:24 AM
In lastbar code 09:14:24 AM
In lastbar code 09:14:24 AM
In lastbar code 09:14:24 AM
In lastbar code 09:14:24 AM
In lastbar code 09:14:24 AM
rt.Close != LastPrice is true.
In ResltCallBack() Current Price: 78.106 Last Price: 78.105 rt.time: 9:15 AM
rt.Close != LastPrice is true.
In ResltCallBack() Current Price: 78.105 Last Price: 78.106 rt.time: 9:15 AM
In lastbar code 09:14:25 AM
In lastbar code 09:14:25 AM
In lastbar code 09:14:25 AM
In lastbar code 09:14:25 AM


Here is the code that goes with this output: thanks
Erol

You can output the CalculationReason to check it.

The calcreason says "Default".
changed the code so that the needRecalc is set to true only if the price moves more than a point. That works, but the lastbar keeps recalculating what appears to be at every tick.
Is there any way to control this?

eroleyikan, you can turn off the IOG:
https://www.multicharts.com/trading-sof ... Calculated

Thanks for everyone's help. I finalized my code. I thought I would post back a summary of the final solution in case it would be helpful for others.

Functionality: place one entry order and a pair of stop and limit orders ALL at the same time at the end of a bar. Then, during the next bar update the prices of the stop limit orders as needed.

How I did it:
I stopped using the Recalculate() function. When IOG mode is set to enabled, recalculate() call is not required. Bars recalculate every tick.
[IOGMode(IOGMode.Enabled)]

Then in the CalcBar() method, I placed all the code that I need to execute ONCE per bar in IF statement such as:
if (Bars.CurrentBar > 1 && Bars.Status == EBarState.Close)

EBarState.Close executes the code at the last tick of the bar.

I placed by order generation code inside an if statement such as
if (Bars.LastBarOnChart)
so the orders are sent/updated every tick. But the prices don't change every tick. So orders stay the same until I updated the stop/limit prices in the ResultCallback() function as needed.

Of course, if you update the stop/limit prices too often you would have a problem. So I modified the ResultCallBack() method to check the current market every 30 seconds for a certain amount of price change. Here is the code: I hope this is helpful. Let me know if you have any questions.