Reference Issue

[dastaan]

Hi NT,

I am trying to ingest MongoDB Driver in strategy files. Even though I have added them in reference ( Through NinjaEditor ) the strategy is throwing issue :

( Could not load file or assembly 'MongoDB.Driver, Version=2.11.5.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.)

Attaching screenshots for reference.

Looking forward to hearing back from you soon.

[NinjaTrader_ChrisL]

Hello dastaan, thanks for writing in.

Could you try removing the references, then moving the DLL files into Documents\NinjaTrader 8\bin\Custom then adding the references again? It could be a file access error we are seeing here.

I look forward to hearing from you.

[dastaan]

Hi ChrisL,

Indeed! You are on point. [ Kudos ]

I tried your solution and stuck with new issue :

Error on calling 'OnBarUpdate' method on bar 0: The type initializer for 'MongoDB.Driver.Core.Misc.DnsClientWrapper' threw an exception.

NT is utilizing 4.8 .Net & according to https://docs.mongodb.com/drivers/csharp version 2.11 should work so I think version mismatch can't be the case.(?)


[ Also how can I check what exception it is throwing ? ]

[NinjaTrader_ChrisL]

Hi dastaan, thanks for your reply.

You could try using Visual Studio debugging to attach to the NinjaTrader process, then run the script while attached to make it throw the exception. I'm not positive if that will work on a DLL file though please test it out.
https://ninjatrader.com/support/help..._debugging.htm

Please also look in your latest trace file within Documents\NinjaTrader 8\trace to see if there is a trace error in there.

Best regards.

[dastaan]

Hi Chris,

Highly appreciate your suggestion, It is valuable.

This is the exception that I am getting from it :

System.TypeInitializationException: The type initializer for 'MongoDB.Driver.Core.Misc.DnsClientWrapper' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'DnsClient, Version=1.3.1.0, Culture=neutral, PublicKeyToken=4574bb5573c51424' or one of its dependencies. The system cannot find the file specified.
at MongoDB.Driver.Core.Misc.DnsClientWrapper..ctor()
at MongoDB.Driver.Core.Misc.DnsClientWrapper..cctor()
--- End of inner exception stack trace ---
at MongoDB.Driver.MongoUrlBuilder.Parse(String url)
at MongoDB.Driver.MongoUrl..ctor(String url)
at MongoDB.Driver.MongoClient..ctor(String connectionString)
at NinjaTrader.NinjaScript.Strategies.RevMasterV5F.On BarUpdate() in c:\Users\91991\Documents\NinjaTrader 8\bin\Custom\Strategies\RevMasterV5F.cs:line 195

Any idea what am I missing here ?

[NinjaTrader_ChrisL]

Hello dastaan, thanks for your reply.

It looks like you used Nuget to add in the MongoDB DLLs into the custom Visual Studio project. You should not add any dependencies to the custom project like this because NinjaTrader handles the DLL building, not Visual Studio. What you will need to do is take an external VS .net framework 4.8 WPF project, use nuget in that to acquire MongoDB, and build the project. Open the bin/debug folder and copy all .dll's that are needed for mongo but not the applications exe to the Documents\NinjaTrader 8\bin\Custom folder. Then manually reference those dll's in the NS editor and compile.

Best regards.

[dastaan]

Hi Chris,

Your suggestion was extremely valuable. [ It has resolved the issue ].

Apart from it, I have a few general questions :

1) How I can get a support job ( Remote?) at NinjaTrader ?

2) Does one's activity in support forums ( or no of posts ) helps in it ?

[NinjaTrader_ChrisL]

Hello dastaan, thanks for your reply.

All of our career listings are here, there are currently no openings for support:

https://ninjatrader.bamboohr.com/jobs/

You will need to ask your questions to the Human Resources department after applying for more details.

Best regards.