Originally posted by: SystemAdmin

[char507 said:]

Hi,

I'm currently beginning our effort to call our CPLEX model from some C# code and I figured exploring the examples located under: 
    C:\ILOG\OPL63\examples\opl_interfaces\dotnet\x64_windows_vs2008\CSharp
would be a good place to start.  In particular, i've been trying to get the SteelMill or Warehouse example to work.  These applications build correctly when provided the reference to oplall.dll however, they throw an exception when run. 

From the line
OplFactory.DebugMode = true
A TypeInitializationException is thrown from ILOG.OPL.OplFactory.  The inner exception says
The type initializer for 'ILOG.OPL.opl_lang_wrap' threw an exception.

Commenting this line out of the code just throws an exception on the next line.  I'm kind of at a loss as to what i'm doing wrong but it has to be something extremely simple.  Any help would be greatly appreciated as this is quite a roadblock for me!



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Originally posted by: SystemAdmin

[vblanchard said:]

Usually, this type of error comes up when some OPL DLLs are not found at runtime. Can you make sure that you have <OPL_install_dir>\bin\your_port within your PATH environment variable for the machine?
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Originally posted by: char507

Where would I check this? I'm trying to explicitly add the 'opl63_dotnet.dll' and the 'cplex121.dll' files explicitly as references in the VS2008 project. However, i'm getting an error that says "A reference to this .dll could not be added. Please make sure that the file is accessible and that it is a valid assembly or COM component"
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Originally posted by: char507

Problem Solved. I didn't realize these .dlls had to be windows environment variables.
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Originally posted by: evanr

I am having similar issues. After adding the OPL directory to my system PATH variable I now receiving a new error:

The type initializer for 'ILOG.OPL.OplFactory' threw an exception.
Unable to cast object of type 'System.TypeInitializationException' to type 'java.lang.Throwable'.

at ILOG.OPL.OplFactory..ctor()
at Warehouse.Warehouse.Main(String[] args) in C:\ILOG\OPL551\examples\dotnet\x86_windows_vs2008\Warehouse\Warehouse.cs:line 86
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

Any help would be greatly appreciated!!!!
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Originally posted by: nestanx

Hi, buddy,I just got the same problem like you recently. Have you solved it? I really need some help.......
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Originally posted by: nestanx

My email address is jzhang12@rockets.utoledo.edu
hope we could solve it together.
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Originally posted by: evanr

I resolved this problem. A couple things that help

1) Include the oplall.dll in the .NET project (found in <OPL root>\bin\)
2) Ensure that the J# runtime has been installed (pre-requisite for deployment) and add references to vjscor and vjslib to the .NET project
3) Ensure that the OPL license environment variable is set. The variable is called ILOG_LICENSE_FILE and should point to the .ilm license
4) The OPL objects have runtime assembly requirements that throw runtime exceptions if they are not found in the appropriate path. I resolved this problem by including the required dlls as 'content' in my .NET project, and so ensuring that they are deployed. See: http://www-01.ibm.com/support/docview.wss?uid=swg21401507
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Originally posted by: nestanx

Thank you, pal.
I solved the problem just like you told me.
I really appreciate it.
^_
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