PIbd-32.-Stroev-V.M.-COP/WinFormsLibrary1/DatabaseImplement/Database.cs

using DatabaseImplement.Models;
using Microsoft.EntityFrameworkCore;

namespace DatabaseImplement
{
    public class Database : DbContext
    {
        public DbSet<Product> Products { get; set; }
        public DbSet<Category> Categories { get; set; }

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseNpgsql("Host=localhost;Port=5432;Database=kop;Username=postgres;Password=postgres");
        }
    }
}