Add an implementation of 'IDesignTimeDbContextFactory' to the project error while creating a migration step in .NET core 2.0

Question

I had a .NET core 1.0 webapp working fine. I had to upgrade to .NET Core 2.0. I also had to add a migration step for my SQLite database.

If I launch this command:

Answer 1

I solve the problem by simply updating Program.cs to the latest .NET Core 2.x pattern:

From 1.x:

using System.IO; using Microsoft.AspNetCore.Hosting;

namespace AspNetCoreDotNetCore1App {
    public class Program
    {
        public static void Main(string[] args)
        {
            var host = new WebHostBuilder()
                .UseKestrel()
                .UseContentRoot(Directory.GetCurrentDirectory())
                .UseIISIntegration()
                .UseStartup()
                .UseApplicationInsights()
                .Build();

            host.Run();
        }
    } }

To 2.x:

using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Hosting;

namespace AspNetCoreDotNetCore2App
{
    public class Program
    {
        public static void Main(string[] args)
        {
            BuildWebHost(args).Run();
        }

        public static IWebHost BuildWebHost(string[] args) =>
            WebHost.CreateDefaultBuilder(args)
                .UseStartup()
                .Build();
    }
}

Source: https://docs.microsoft.com/en-us/ef/core/miscellaneous/cli/dbcontext-creation