Use resx from Azure Function

HttpTrigger1.cs

using System.Globalization;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;

public class HttpTrigger1
{
    [FunctionName("HttpTrigger1")]
    public async Task<IActionResult> Run(
        [HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = null)] HttpRequest req,
        ILogger log)
    {
        log.LogInformation("C# HTTP trigger function processed a request.");

        if (req.Query["lang"] == "en") {
            var specifiedCulture = new CultureInfo("en");
            CultureInfo.CurrentCulture = specifiedCulture;
            CultureInfo.CurrentUICulture = specifiedCulture;
        } else {
            var specifiedCulture = new CultureInfo("ja");
            CultureInfo.CurrentCulture = specifiedCulture;
            CultureInfo.CurrentUICulture = specifiedCulture;
        }
        string resourceName = "Resources.SharedResource";
        string assemblyName = System.Reflection.Assembly.GetExecutingAssembly().GetName().Name;
        System.Resources.ResourceManager rm = new System.Resources.ResourceManager($"_{assemblyName}.{resourceName}", System.Reflection.Assembly.GetExecutingAssembly());
        log.LogInformation(rm.GetString("Str_Hello"));

        return new OkObjectResult($"{rm.GetString("Str_Hello")} World");
    }
}

project structure

.
├── bin
├── host.json
├── HttpTrigger1.cs
├── local.settings.json
├── MyFunctionApp.csproj
├── obj
└── Resources
   ├── SharedResource.en.resx
   └── SharedResource.ja.resx