Error on calling 'OnBarUpdate' method for strategy

[DealI]

my code running perfectly but after some point it stops and i got this message at the bottom of the output window where execution stops

- < Error on calling 'OnBarUpdate' method for strategy 'rainraingoaway/d380bf5bb9194f569ca67594daee5018': Object reference not set to an instance of an object. > -

can u tell me how to fix this

[NinjaTrader_ChelseaB]

Hello ,

Thanks for your note.

This error message indicates that a variable being called is not instantiated. This can be due to the variable being set to null, or not having been properly instantiated in the variables region.

I recommend that you add print statements to your code at each step the strategy is taking.

This will help you to narrow down the particular line of code that is causing the problem.

Please let me know if I can be of further assistance for you.

[DealI]

thanks i used
private IOrder entryOrder = null;
private IOrder exitOrder = null;

may due to this ..!! apart from null wat i can use in assigning variable in the public class for iOrders

[koganam]

thanks i used
private IOrder entryOrder = null;
private IOrder exitOrder = null;

may due to this ..!! apart from null wat i can use in assigning variable in the public class for iOrders

And what are the statements where you used the IOrders to generate the trading orders?

[DealI]

if(GetCurrentBid() <= refhigh-3 && Position.MarketPosition == MarketPosition.Flat )
{

entryOrder = EnterLong();



}
if (Position.MarketPosition != MarketPosition.Flat)
{
lastboughtprice = entryOrder.AvgFillPrice;


}


if(GetCurrentBid() <= lastboughtprice-2 && Position.MarketPosition != MarketPosition.Flat )
{

entryOrder = EnterLong();


}
if (Position.MarketPosition != MarketPosition.Flat)
{
lastboughtprice = entryOrder.AvgFillPrice;


}


if(GetCurrentBid() >= Position.AvgPrice )
{
exitOrder = ExitLong();
refhigh =0;

}


these where i used iOrders

[koganam]

if(GetCurrentBid() <= refhigh-3 && Position.MarketPosition == MarketPosition.Flat )
{

if (entryOrder == null) entryOrder = EnterLong();



}
if (Position.MarketPosition != MarketPosition.Flat)
{
lastboughtprice = entryOrder.AvgFillPrice;


}


if(GetCurrentBid() <= lastboughtprice-2 && Position.MarketPosition != MarketPosition.Flat )
{

if (entryOrder == null) entryOrder = EnterLong();


}
if (Position.MarketPosition != MarketPosition.Flat)
{
lastboughtprice = entryOrder.AvgFillPrice;


}


if(GetCurrentBid() >= Position.AvgPrice )
{
if (exitOrder == null) exitOrder = ExitLong();
refhigh =0;

}


these where i used iOrders

You just need to check for the null reference first. Shown in red in your text.

I do wonder about your exit condition: do you really want to exit as soon as the CurrrentBid is greater than your position's average price?

Remember to reset your IOrders to null after they are filled, so that you can reuse them. We usually do it in the OnExecution() event handler.

[DealI]

Remember to reset your IOrders to null after they are filled..//////

How to reset the IOrders ???

[koganam]

Remember to reset your IOrders to null after they are filled..//////

How to reset the IOrders ???

I referred you to OnExecution(). Read it.

http://www.ninjatrader.com/support/helpGuides/nt7/onexecution.htm

[DealI]

yes i got it but i want to know how to reset entryOrder = null in the OnExecution(IExecution execution)

pls help

[NinjaTrader_Bertrand]

yes i got it but i want to know how to reset entryOrder = null in the OnExecution(IExecution execution)

pls help

Deall, I would highly suggest reviewing this example for working with the advanced order handling approach including IOrders, it will show the resets needed as well.

http://www.ninjatrader.com/support/forum/showthread.php?t=7499