Azure WebJobs in .NET Core Using VS 2017 15.3

With .NET Core Framework the way to create a WebJob it's a bit different. You need to use Console Application(.NET Core).

I highly recommend you to follow this guide Azure WebJobs In .NET Core

This is my working example of simple WebJob :(Using Core 2.2)

(Program)

public class Program
{
    public static IConfigurationRoot config { get; private set; }

    static void Main(string[] args)
    {
        var environment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT");
        Console.WriteLine($"Current Environment : {(string.IsNullOrEmpty(environment) ? "Development" : environment)}");

        config = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"appsettings.{environment}.json", optional: true, reloadOnChange: true)
                .AddEnvironmentVariables()
                .Build();

        Console.WriteLine("URL API:" + config["appsettings node"]);


        var builder = new HostBuilder()
            .ConfigureWebJobs(webJobConfiguration =>
            {
                webJobConfiguration.AddTimers();
                webJobConfiguration.AddAzureStorageCoreServices();
            })
            .ConfigureServices(serviceCollection => serviceCollection.AddSingleton<TimeneyeTasks>())
            .Build();

        builder.Run();
    }
}

(My class:)

I hope it helps!!