Program compiles, but doesn't display

[hilojack]

Greetings-

So we've done the migration of an old program from NT 6.5 to NT 7 and got it to compile, however it will not display on the charts. We went through the code breaking changes for the migration and made the appropriate updates, yet nothing.

This is a totally custom program written entirely from scratch and is roughly 1200 lines of code-- so don't ask me to upload LOL.

Is there something basic we have missed? Seems to me like its just the flip of a switch or something, as the program doesn't appear to be engaging NT7 despite the changes made.

Any thoughts?

Thx.

[NinjaTrader_Joydeep]

Hello hilojack,
Thanks for your note.

To assist you further may I know are you getting any error message in the Log tab or in the Output Window (Tools>Output Window).

Please refer to this post which further discusses how to debug in NinjaTrader.

http://www.ninjatrader.com/support/forum/showthread.php?t=3418

[hilojack]

hi joydeep-

Thank you for your help. the error message in the log states:

"Error on calling 'OnBarUpdate' method for indicator 'custom' on bar 0: Object reference not set to an instance of an object."

[NinjaTrader_Joydeep]

Hello hilojack,
Thanks for the information.

Unfortunately we do not debug custom NinjaScript codes. You have to debug the code and see from where the error is coming from.

http://www.ninjatrader.com/support/forum/showthread.php?t=3418

[hilojack]

Well I get that. Perhaps a little more than a 3 page migration guide would be helpful. there's a reason why people go platform agnostic... and unfortunately its situations like this.

[NinjaTrader_Joydeep]

Hello hilojack,
Thanks for your feedback. I will forward your request to development for future consideration.

[NinjaTrader_Joydeep]

Hello hilojack,
You can also use the try catch block to fish out the errors. Please refer to this sample code which further demonstrates it.

http://ninjatrader.com/support/forum/showthread.php?t=9825

Please refer here for the code breaking changes that were made while one upgrades to NinjaTrader 7.

http://www.ninjatrader.com/support/helpGuides/nt7/pdf/NinjaScript_Code_Breaking_Changes_Revision_11_October_11_2010.pdf

[koganam]

hi joydeep-

Thank you for your help. the error message in the log states:

"Error on calling 'OnBarUpdate' method for indicator 'custom' on bar 0: Object reference not set to an instance of an object."

That means that you have declared an object but not initialized it before you are trying to access it. For example, have you initialized all the DataSeries (if any), that you have declared?

[kbrobot.net]

Greetings-

So we've done the migration of an old program from NT 6.5 to NT 7 and got it to compile, however it will not display on the charts. We went through the code breaking changes for the migration and made the appropriate updates, yet nothing.

This is a totally custom program written entirely from scratch and is roughly 1200 lines of code-- so don't ask me to upload LOL.

Is there something basic we have missed? Seems to me like its just the flip of a switch or something, as the program doesn't appear to be engaging NT7 despite the changes made.

Any thoughts?

Thx.

Hello, hilojack!
If it is possible then send me the code-i will try to help you