I found it out, just in case someone else needs it too:
or
Can I thank myself?

Hello,

At the moment C# 4.0 is used for MultiCharts .NET 14.
We are planning to add C# 7.0 in the nearest future.

Also please make sure to support recent visualstudio version like 2019 and >.

I agree! Please upgrade C# version and decent Visual Studio support as soon as possible!

Hi, I have the same problem but struggeling to call the kind of method that Henry suggested with the Interfaces as parameters.
Could someone please show an example of how to call the method including definition of the parameters passed into the method? Thanks a lot in advance!

Hi JoshM, thanks for your quick reply! I found the solution, so it is indeed possible! I had these issues: 1. The file name I had the files in folder "C:\ProgramData\TS Support\MultiCharts .NET64\StudyServer\Techniques\CS", but the PowerLanguage .NET Editor did not show them in the Studies Overview ...

I need that functionality too for Multicharts .NET!
It should be possible to get multiple .CS code files into the Multicharts .NET editor and compile then without copy & paste.

Best regards,
trd001

Thank you Svetlana!!!

Hi, I'd be very grateful if someone could answer these related questions: 1. How can I get the date of the last bar on chart in StartCalc method? 2. Is it possible to access the "Data Range" data ("from", "to") from the Format Instrument / Settings tab? 3. In general, how can I iterate thru the data...