Error CS0433 when exporting a strategy

[Armin]

Hi,

when I export my strategy I get an error CS0433.
Error compiling export assembly: c:\users\myuser\documents\NinjaTrader 8\bin\Custom\Strategies\MyStrategy. cs(20,11) : error CS0433: The type 'NinjaTrader.NinjaScript.Indicators.EMA' exists in both 'c:\users\myuser\documents\NinjaTrader 8\bin\Custom\NinjaTrader.Vendor.dll' and 'c:\users\myuser\documents\NinjaTrader 8\bin\Custom\MyIndicator.dll'

The situation is the following:
1. I have a custom indicator (MyIndicator) that uses the EMA standard indicator. When I export this indicator the compiler gives me a message that @EMA.cs is added to the dll.
2. I install the indicator at the NinjaTrader environment where I develop my strategy.
3. When exporting my strategy, I add the reference to MyIndicator. After pressing Export I get the error CS0433.

I wonder how to solve this problem?
When I create the MyIndicator.dll I have no option to leave out the @EMA.cs.
On the other side I have to add the reference to MyIndicator when I export the strategy to ensure that it works.

Any suggestions on how I can overcome this dilemma?

Thanks !!!
Armin

[NinjaTrader_ChrisL]

Hi Armin, thanks for posting. I tested using the attached files and do not get this issue. There must be some way you are using the indicator that is causing a compile error on your end. Please see attached for my example.

I posted a .zip fo the UseEMA indicator as source and I also uploaded the host strategy .cs file.

1. Import UseEMASource
2. Export this as a compiled assembly.
3. Exclude UseEMA from compilation by right clicking it from the Editor window>Exclude From Compilation
4. Import the newly created UseEMA.dll
5. Add in the HostStrategy.cs file into Documents\NinjaTrader 8\bin\Custom\Strategies, then compile.
6. Export the HostStrategy as a DLL. Note, I did not have to add the UseEMA as an additional reference, it will do it automatically.

[Armin]

Hi Chris,

thank you for testing this issue.
With your example I recognized, that I forgot to mention that I also use the standard EMA in the strategy.
Just declare in HostStrategy at line 31:

private EMA StdEMA;

You can compile the strategy without problems.
But now when you try to export it and have a reference to UseEMA, then the error CS0433 will come up and you can not export the HostStrategy.

Thanks !!!
Armin

[NinjaTrader_ChrisL]

Hi, Please make sure when you are exporting the Strategy that also uses the EMA, add the EMA system indicator to the list of exports

[Armin]

Hi Chris,

I would have never come up with that.

Thank you for your valuable support !!!
Armin