public int Delete(DatabaseHelper help)
        {
            var t = new Chi_tiet_the_kho //Make sure you have a table called test in DB
            {

                ID_The_Kho = this.ID_the_kho,                   // ID = Guid.NewGuid(),
                Ma_phieu = this.Ma_phieu,
                Loai_phieu = this.Loai_phieu,
                Ngay_xuat_chung_tu = this.Ngay_xuat_chung_tu,

                Ngay_nhap_xuat = this.Ngay_nhap_xuat,
                Dien_giai = this.Dien_giai,
                SL_Nhap = this.SL_Nhap,
                SL_Xuat = this.SL_Xuat,
                SL_Ton = this.SL_Ton,
                Da_quyet_toan = this.Da_quyet_toan,
                Ghi_chu = this.Ghi_chu,

            };
            help.ent.Chi_tiet_the_kho.Attach(t);
            help.ent.Chi_tiet_the_kho.Remove(t);
            return help.ent.SaveChanges();
        }
        public int Update(DatabaseHelper help)
        {
            int temp = 0;
            var t = new Chi_tiet_the_kho //Make sure you have a table called test in DB
            {

                ID_The_Kho = this.ID_the_kho,                   // ID = Guid.NewGuid(),
                Ma_phieu = this.Ma_phieu,
                Loai_phieu = this.Loai_phieu,
                Ngay_xuat_chung_tu = this.Ngay_xuat_chung_tu,

                Ngay_nhap_xuat = this.Ngay_nhap_xuat,
                Dien_giai = this.Dien_giai,
                SL_Nhap = this.SL_Nhap,
                SL_Xuat = this.SL_Xuat,
                SL_Ton = this.SL_Ton,
                Da_quyet_toan = this.Da_quyet_toan,
                Ghi_chu = this.Ghi_chu,

            };
            try
            {
                using (var context = help.ent)
                {
                    context.Chi_tiet_the_kho.Attach(t);
                    context.Entry(t).State = EntityState.Modified;
                    temp = help.ent.SaveChanges();

                }

            }
            catch (Exception ex)
            {

            }

            return temp;
        }
        public int Insert(DatabaseHelper help)
        {
            // insert

            {
                try
                {
                    var t = new Chi_tiet_the_kho //Make sure you have a table called test in DB
                    {

                        ID_The_Kho = this.ID_the_kho,                   // ID = Guid.NewGuid(),
                        Ma_phieu = this.Ma_phieu,
                        Loai_phieu = this.Loai_phieu,
                        Ngay_xuat_chung_tu = this.Ngay_xuat_chung_tu,

                        Ngay_nhap_xuat = this.Ngay_nhap_xuat,
                        Dien_giai = this.Dien_giai,
                        SL_Nhap = this.SL_Nhap,
                        SL_Xuat = this.SL_Xuat,
                        SL_Ton = this.SL_Ton,
                        Da_quyet_toan = this.Da_quyet_toan,
                        Ghi_chu = this.Ghi_chu,

                    };

                    help.ent.Chi_tiet_the_kho.Add(t);
                    help.ent.SaveChanges();
                    return 1;
                }
                catch (Exception ex)
                {

                    return 0;

                }

            }
        }