How Can I Call a Native .NET Library from Python?

Calling a Native .NET Library from Python

Your goal is to execute a .NET library from within your Python code. To achieve this, we'll avoid using IronPython and instead explore the possibility of calling C# code from Python.

First, you'll need to install the "UnmanagedExports" NuGet package into your .NET project. This package allows you to export .NET methods without COM interoperability.

Here's a modified example of your C# code:

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using RGiesecke.DllExport;

class Test
{
    [DllExport("add", CallingConvention = CallingConvention.Cdecl)]
    public static int TestExport(int left, int right)
    {
        return left + right;
    }
}

Once compiled, you can load the .dll into your Python code and access the exported methods:

import ctypes
a = ctypes.cdll.LoadLibrary(source)
a.add(3, 5)

This will invoke the TestExport method in your C# library, returning the sum of the two numbers passed to it.

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