How to Call a Custom C# DLL in VuGen

Step 1: Create a Custom C# DLL

using System;

namespace CustomFunctions
{
    public class CustomFunctions
    {
        public static string HelloWorld()
        {
            return "Hello, World!";
        }
    }
}

Step 2: Prepare VuGen Environment

Place the generated DLL file in a location accessible by VuGen.

Step 3: Call the Custom DLL in VuGen

extern "C" int lr_load_dll(const char *lpLibFileName);

extern "C" void HelloWorld();

Action()
{
    lr_load_dll("path_to_dll\\CustomFunctions.dll");

    HelloWorld();

    return 0;
}

Example

#include "lrun.h"

extern "C" int lr_load_dll(const char *lpLibFileName);

extern "C" void HelloWorld();

Action()
{
    lr_load_dll("path_to_dll\\CustomFunctions.dll");

    HelloWorld();

    return 0;
}

Syntax

Declaration in C#

using System;

namespace CustomFunctions
{
    public class CustomFunctions
    {
        public static string HelloWorld()
        {
            return "Hello, World!";
        }
    }
}

Declaration in VuGen (C)

extern "C" int lr_load_dll(const char *lpLibFileName);

extern "C" void HelloWorld();

Loading DLL and Calling Function in VuGen (C)

lr_load_dll("path_to_dll\\CustomFunctions.dll");

HelloWorld();