BookStore/BookStore_2.0/BookStoreContext.cs

using System.Configuration;
using Microsoft.EntityFrameworkCore;

namespace BookStore_2._0
{
    class BookStoreContext : DbContext
    {
        public DbSet<Book> Books { get; set; }
        public BookStoreContext()
        {

        }
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseSqlServer(ConfigurationManager.ConnectionStrings["gr601_kayual"].ConnectionString);
        }
    }
}