MultiCharts: Trading Software for Automated Trading and Backtesting

My environment is Windows 7 VS 2010 Ultimate Version 10.0.40219.1 SP1Rel

I've two blocking issues
The first is the famous message

Unable ti evaluate the expression

when I try to see a variable's value.
The second is an error raided when the calcbar executes any PL structure, for example or the message is

ManagedStudies.details._ELAPI_exception_Wrap_ was unhandled by user code
Message: Error from the application

This happens when I use a Class wtitten in VB, and residing in an external module.
For example then indicator resides in
__zD_BinBol.Indicator.VB
end then class in in
zD_Lib1.Function.VB

PS
Please can you tell me how to add references to external assembly with PL editor?
I have then IB .NET version.

Thank you in advance

Hello szoi,

For "unable to evaluate the expression" error please see this post.

You do not need to catch the _ELAPI_exception_Wrap_ exception in VS as it is an internal message for the system.

Here is how to add a reference.

Hi

I don t think this issue was solved with vs2012

Emmanuel

Hi Henry,
thank you very much for your support.
I'm still in trouble.
I've all the logic implemented in a DLL called MC_zD_
Here's the strategy code Anyway I still receive then prompt 'Unable to evaluate the expression' both outside and inside the DLL (see attached image)
Any suggestion?
Thanks

szoi, you need to set the breakpoint in the code of your DLL, not in the code on MultiCharts .NET study. Please attach to MultiCharts before applying the study to a chart or start MultiCharts from VS.

Thank you for the fast reply
Henry, this is what I'm doing
I starts MC from VS, I've no breakpoints on MultiCharts .NET study code, and I break only in DLL, but I can't see variables anyway.
Please see the attached images

Thank you for the fast reply
Henry, this is what I'm doing
I starts MC from VS, I've no breakpoints on MultiCharts .NET study code, and I break only in DLL, but I can't see variables anyway.
Please see the attached images

On this screenshot the breakpoint is still set in the MultiCharts .NET study code, not in your DLL.

Sorry, Henry
I know this sounds very stupid from me, but I don't understand what means to put the breakpoint in the DLL.
My breakpoint is in the code from DLL,
(22mflq4o.dll.VB.netmodule!PowerLanguage.PostNewsSrtInd.CalcBar Line 36), and I don't know to breack elsewhere.

Sorry, Henry
I know this sounds very stupid from me, but I don't understand what means to put the breakpoint in the DLL.
My breakpoint is in the code from DLL,
(22mflq4o.dll.VB.netmodule!PowerLanguage.PostNewsSrtInd.CalcBar Line 36), and I don't know to breack elsewhere.

szoi, please try these instructions:
http://stackoverflow.com/questions/9431 ... int-in-dll
http://stackoverflow.com/questions/2617 ... ual-studio

Very strange!
I've followed all the instructions: I've added the DLL project, (MC_zD_) to the solution, cleared all the breakpoints and started the debug session, and the issue is still there.

Very strange!
I've followed all the instructions: I've added the DLL project, (MC_zD_) to the solution, cleared all the breakpoints and started the debug session, and the issue is still there.

On this screenshot the breakpoint is still set in the MultiCharts .NET *.dll.VB.netmodule in StartCalc method.

Henry, I'm afraid of abusing of your patience, but I've a blind spot, and I'm not finding the way.
Please can you revise my procedure to find where I'm wrong?
1. All the logic, is in a separate DLL, as in this post
2. The strategy code, just contains the New and the Create procedures, which just calls the DLL's homonymous. This way all the code is in the DLL.
3. In my test VS solutions, there are two projects: the DLL (as in http://stackoverflow.com/questions/9431 ... int-in-dll), and the debug project, with the minimal strategy code.
4. To start debugging, I implicitly start C:\Program Files\TS Support\MultiCharts .NET64 for TWS\MultiCharts64.exe (specified as parameter in Debug --> Start external program)
5. I set the breakpoints only in the DLL code, from the DLL's project .
6. The debug session starts correctly, and the breakpoints are executed.
7. At this point I believe to be in the DLL code, while I'm still in the MultiCharts .NET study code.
Where's the bug?
Thank you in advance

szoi, please see the attached images with the description. We have also verified that this bug is now fixed in Visual Studio 2013. Which means you can now use it to debug your VB code directly.