vs2017 EFCore 迁移数据库命令

   public class DesignTimeDbContextFactory : IDesignTimeDbContextFactory<QHContext>
    {
        public QHContext CreateDbContext(string[] args)
        {

            var builder = new DbContextOptionsBuilder();
            //builder.UseSqlServer("Server=(localdb)\MSSQLLocalDB;Integrated Security=true;Initial Catalog=Light;");
            builder.UseSqlServer("Server=***;Database=**;User ID=**;Password=**;Trusted_Connection=false;Connect Timeout=120;MultipleActiveResultSets=True;");
            return new QHContext(builder.Options);
        }
    }

 public class QHContext : DbContext
    {

        public QHContext(DbContextOptions options) : base(options)
        {

        }

        public DbSet<Customer> Customers { get; set; }
        public DbSet<Order> Orders { get; set; }
        public DbSet<OrderItem> OrderItems { get; set; }
        public DbSet<Product> Products { get; set; }
        public DbSet<ProductItem> ProductItems { get; set; }

        public DbSet<User> Users { get; set; }

        public DbSet<BuckleRecord> BuckleRecords { get; set; }
        public DbSet<CustomerRelation> CustomerRelations { get; set; }
        public DbSet<OrderLog> OrderLogs { get; set; }
        public DbSet<RebateRecord> RebateRecords { get; set; }
        public DbSet<Recharge> Recharges { get; set; }
        public DbSet<Withdraw> Withdraws { get; set; }


        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            //var builder = new ConfigurationBuilder()
            //            .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);

            //var configuration = builder.Build();

            //string connectionString = configuration.GetConnectionString("MyConnection");

            //optionsBuilder.UseMySQL(connectionString);
        }

        protected override void OnModelCreating(ModelBuilder builder)
        {
           
            //builder.Entity<Customer>().HasKey(m => m.CustomerId);
            builder.Entity<Customer>().ToTable("Customer");
            builder.Entity<BuckleRecord>().ToTable("BuckleRecord");
            builder.Entity<CustomerRelation>().ToTable("CustomerRelation");
            builder.Entity<Order>().ToTable("Order");
            builder.Entity<OrderItem>().ToTable("OrderItem");
            builder.Entity<OrderLog>().ToTable("OrderLog");
            builder.Entity<Product>().ToTable("Product");
            builder.Entity<ProductItem>().ToTable("ProductItem");
            builder.Entity<RebateRecord>().ToTable("RebateRecord");
            builder.Entity<Recharge>().ToTable("Recharge");
            builder.Entity<User>().ToTable("User");
            builder.Entity<Withdraw>().ToTable("Withdraw");

            base.OnModelCreating(builder);
        }
    }