FCC/Applications/ATG_Classic_App/DesignTimeDbContextFactory.cs

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Design;
using Microsoft.EntityFrameworkCore.Infrastructure;

namespace Application.ATG_Classic_App
{
    /// <summary>
    /// Visual studio Add-Migration will detect and use this to get DbContext
    /// </summary>
    public class DesignTimeDbContextFactory : IDesignTimeDbContextFactory<AppDbContext>
    {
        public AppDbContext CreateDbContext(string[] args)
        {
            var option = new DbContextOptionsBuilder<AppDbContext>()
                .UseSqlite("Data Source=Application.ATG_Classic_App_database.db").Options;
            return new AppDbContext(option);
            return new AppDbContext();
        }
    }
}