public void suachitietsddv(ChitietsddvObject chitiet)
        {
            kn.connect();
            SqlCommand cmd = new SqlCommand("UPDATEchitietSDDV", kn.con);

            cmd.CommandType = CommandType.StoredProcedure;
            SqlParameter p = new SqlParameter("@MAKH", chitiet.Makh);

            cmd.Parameters.Add(p);
            p = new SqlParameter("@MADV", chitiet.Madv);
            cmd.Parameters.Add(p);
            p = new SqlParameter("@NGAYSD", chitiet.Ngaysd);
            cmd.Parameters.Add(p);
            p = new SqlParameter("@SLDV", chitiet.Sldv);
            cmd.Parameters.Add(p);
            int count = cmd.ExecuteNonQuery();

            if (count > 0)
            {
                MessageBox.Show("Sửa thành công");
            }
            else
            {
                MessageBox.Show("Không thể sửa!!!");
            }
            kn.disconnect();
        }
 private void btnxoachitietdv_Click(object sender, EventArgs e)
 {
     try
     {
         ChitietsddvObject ct = new ChitietsddvObject();
         ct.Makh = txtchitietmakh.Text;
         ct.Madv = txtchitietmadv.Text;
         Chitietsddvcontrol.deletechitietsddv(ct);
         dataGridView1.DataSource = Chitietsddvcontrol.getdatachitietdv();
     }
     catch { }
 }
 private void btnsuachitietdv_Click(object sender, EventArgs e)
 {
     try
     {
         ChitietsddvObject ct = new ChitietsddvObject();
         ct.Makh = txtchitietmakh.Text;
         ct.Madv = txtchitietmadv.Text;
         //ct.Ngaysd = DateTime.Parse(datime1.Text);
         ct.Ngaysd = DateTime.Now;
         ct.Sldv   = Int32.Parse(txtsldv.Text);
         Chitietsddvcontrol.updatechitietsddv(ct);
         dataGridView1.DataSource = Chitietsddvcontrol.getdatachitietdv();
     }
     catch { }
 }
        public static void deletechitietsddv(ChitietsddvObject chitiet)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            ctsd.xoachitietsddv(chitiet);
        }
        public static void updatechitietsddv(ChitietsddvObject chitiet)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            ctsd.suachitietsddv(chitiet);
        }
        public static void ADDchitietsddv(ChitietsddvObject chitiet)
        {
            Chitietsddvmodel ctsd = new Chitietsddvmodel();

            ctsd.themchitietsddv(chitiet);
        }