DLL call issues

[Ariseigle]

Hello,

I am working with a desk manager who has an external
software compatable with NT.
I am trying to use the Runtime.dll from the software
folder in the NinjaTrader 7. However I am unsuccessful.
My system is a 64bit Windows machine with .Net Frameworks 4.5 and
4.6 installed.
When trying the VB example from the programming examples folder, the
program works fine. Similarly, if I try to use it in Visual Studio
.Net in a C# project where I add the dll as a reference, everything
works fine: I can instantiate a Runtime.DLL object.
What I do, is I take the Interop.Runtime.dll generated
in the Visual Studio when the Runtime.dll is added to the
references, and place it in Documents/NT7/bin/Custom.
Then, in NT 7 (32b) I add the reference in an Indicator and then I
simply create and instantiate the Runtime.DLL. NT compiles
the indicator fine but at runtime I get this error:
: Could not load file or assembly 'Interop.Runtime,
Version=1.1.0.0, Culture=neutral, PublicKeyToken=null' or one of its
dependencies. The system cannot find the file specified.
I believe is something with the way Visual Studio converts the
Assembly COM DLL to an Interop DLL but I can't seem to figure what it
is. Can you help me with this issue ?

or........

Should I attempt a different method for this in NT8 ?

Kind regards

Ari

[NinjaTrader_PatrickH]

Hello Ariseigle,

Thank you for your post and welcome to the NinjaTrader Support Forum!

As long as the file is in the bin/custom folder under Documents\NinjaTrader 7 (NinjaTrader 8 folder for NinjaTrader 8) and you have added the references and are stating using myDLL; in your code it should work.

NinjaTrader 7 would not support a .NET 4.5 .dll and would need 3.5. Try creating the .dll as 3.5.

Please let me know if you have any questions.

[Ariseigle]

The original Dll is a COM Dll and we observed that it cannot be used directly in NT7 or NT8. If we place it at the right folder and add the reference NT7/8 can't compile. So what we did, we used the converted Dll into the InterOp Dll from the .Net project. That one compiles but NT7/8 complains with the original error at the runtime

[NinjaTrader_PatrickH]

Hello Ariseigle,

Thank you for your response.

I am actually not sure on that as I have never tried to work with libraries in that fashion. I will check with development. Anyone else that has attempted this is free to respond here as well.