1. IronBarcode
  2. Solución de Problemas
  3. Error de compilación de ML.OnnxRuntime

Missing DLLs in Creating MSI Installer

Curtis Chau
Curtis Chau
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When creating an MSI installer, you may encounter the following exception:

2025-01-27 16:57:23 - Error: IronBarCodeDetection.Exceptions.IronBarcodeDetectionException: Unexpected error occurred during execution of the IronBarcode Machine Learning library. Please provide details to support@ironsoftware.com for a resolution. ---> System.TypeInitializationException: The type initializer for 'Microsoft.ML.OnnxRuntime.NativeMethods' threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.ML.OnnxRuntime.NativeMethods..cctor()
   --- End of inner exception stack trace ---
   at Microsoft.ML.OnnxRuntime.SessionOptions..ctor()
   at Iron.BarCode.Extensions.xjtagg`1..ctor(Stream dfepdx, SessionOptions dfepdy)
   at IronBarCodeDetection.BarcodeDetect.PredictObject[TModel](Stream modelStream)
   --- End of inner exception stack trace ---
   at IronBarCodeDetection.BarcodeDetect.PredictObject[TModel](Stream modelStream)
   at IronBarCodeDetection.BarcodeDetect.DetectBarCode()
   at Iron.BarCode.Extensions.cuewjf.ehxbbs(BarcodeDetect tlxjvd)
   at Iron.BarCode.Extensions.cuewjf.ehxbbr(AnyBitmap tlxjvd, Double tlxjve)
   at Iron.BarCode.Extensions.cuewjo.mvanli(AnyBitmap tlxjvd, Double tlxjve)
   at Iron.BarCode.Extensions.cuewjo.mvanlf(Image`1 tlxjvd)
   at Iron.BarCode.Extensions.cuewjo.mvankh(Object tlxjvd)
   at IronBarCode.BarcodeReader.Read(AnyBitmap inputImage, BarcodeReaderOptions barcodeReaderOptions)
   at WindowsFormsBarcode.Form1.btnBrowse_Click_1(Object sender, EventArgs e)
2025-01-27 16:57:23 - Error Message: Unexpected error occurred during execution of the IronBarcode Machine Learning library. Please provide details to support@ironsoftware.com for a resolution.
2025-01-27 16:57:23 - Inner Exception: The type initializer for 'Microsoft.ML.OnnxRuntime.NativeMethods' threw an exception.
2025-01-27 16:57:23 - Inner Exception Stack Trace:    at Microsoft.ML.OnnxRuntime.SessionOptions..ctor()
   at Iron.BarCode.Extensions.xjtagg`1..ctor(Stream dfepdx, SessionOptions dfepdy)
   at IronBarCodeDetection.BarcodeDetect.PredictObject[TModel](Stream modelStream)

Reason

This error occurs because the library cannot find the required files to function properly.

Solution

To ensure the MSI installer runs smoothly, you must include the following three files in your setup project: onnxruntime.dll, IronBarcodeInterop.dll, and ReaderInterop.dll. These files are generated when you build the project in Release mode:

  • onnxruntime.dll: Located at MsiInstallerSample\MsiInstallerSample\bin\Release
  • IronBarcodeInterop.dll: Located at MsiInstallerSample\MsiInstallerSample\bin\Release\runtimes\win-x86\native
  • ReaderInterop.dll: Located at MsiInstallerSample\MsiInstallerSample\bin\Release\runtimes\win-x86\native

Make sure all three files are added to your Setup Project to avoid this exception.

Curtis Chau
Curtis Chau
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Escritor Técnico

Curtis Chau tiene una licenciatura en Ciencias de la Computación (Carleton University) y se especializa en el desarrollo front-end con experiencia en Node.js, TypeScript, JavaScript y React. Apasionado por crear interfaces de usuario intuitivas y estéticamente agradables, disfruta trabajando con frameworks modernos y creando manuales bien ...

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