CODEWITHSUNDEEP
c#.netrinterop
Meelfan Bmfp
Meelfan Bmfp

Reputation: 605

An unhandled exception of type 'System.ApplicationException' occurred in RDotNet.NativeLibrary.dll

I'm looking into using R.NET for working with R library in my .NET application. I have installed the libraries and the R environment.

However, i get the exception described above when running the sample program provided on the project page:

 static void Main(string[] args)
        {

         //   REngine.SetEnvironmentVariables(); // <-- May be omitted; the next line would call it.
            REngine engine = REngine.GetInstance();
            // A somewhat contrived but customary Hello World:
            CharacterVector charVec = engine.CreateCharacterVector(new[] { "Hello, R world!, .NET speaking" });
            engine.SetSymbol("greetings", charVec);
            engine.Evaluate("str(greetings)"); // print out in the console
            string[] a = engine.Evaluate("'Hi there .NET, from the R engine'").AsCharacter().ToArray();
            Console.WriteLine("R answered: '{0}'", a[0]);
            Console.WriteLine("Press any key to exit the program");
            Console.ReadKey();
            engine.Dispose();
        }

In case anyone has run into this issue, i would be really glad to have any comments. I have searched relevant forum but no luck yet.

full exception information:

An unhandled exception of type 'System.ApplicationException' occurred in RDotNet.NativeLibrary.dll Additional information: Windows Registry key 'SOFTWARE\R-core' not found in HKEY_LOCAL_MACHINE nor HKEY_CURRENT_USER

I checked the R is properly installed and R-Core is found HKEY_LOCAL_MACHINE

Many thanks in advance

Upvotes: 0

Views: 2441

Answers (1)

Meelfan Bmfp
Meelfan Bmfp

Reputation: 605

Please follow the diagnosis instructions in jmp75.github.io/rdotnet/ts_paths_on_windows . This would help isolate the issue. I suspect a mismatch between 32 and 64 bits in your c# project and R set up (which R engine did you install: 32 and/or 64 bits?) but this is just a wild guess without the aforementioned diagnosis.

Changing the target platform of my project solved the issue following the comment above

Upvotes: 3

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