Books.Service/PresssService.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Books.Service.Entity;

namespace Books.Service
{
    public class PresssService
    {
        private BookDbContext db { get; set; } = new BookDbContext();
        public IQueryable<PressEntity> GetPress()
        {
            BaseService<PressEntity> bs = new BaseService<PressEntity>();
            return bs.GetAll();
        }
        public PressEntity GetPressId(int id)
        {
            BaseService<PressEntity> bs = new BaseService<PressEntity>();
            return bs.GetId(id);
        }
        public int Add(string name)
        {
            BookDbContext db = new BookDbContext();
            db.Presse.Add(new PressEntity { Name=name });
            return db.SaveChanges();
        }
        public void Update(int id, string name)
        {
            BaseService<PressEntity> bs = new BaseService<PressEntity>();
            var pre=bs.GetId(id);
            pre.Name = name;
            bs.SaveChanges();
        }
        public int Delete(int id)
        {
            BaseService<PressEntity> bs = new BaseService<PressEntity>();
            
            var da = bs.GetId(id);
            bs.db.Presse.Remove(da);
            return bs.SaveChanges();
        }
    }
}