public static void UpdateSV(tblSinhVien gv)
        {
            SqlConnection Conn    = dbConnectionData.ketnoi();
            SqlCommand    command = new SqlCommand("pr_SinhVien_Update", Conn);

            command.CommandType = CommandType.StoredProcedure;
            command.Parameters.Add("@MaSV", SqlDbType.NVarChar, 10);
            command.Parameters.Add("@HoTen", SqlDbType.NVarChar, 100);
            command.Parameters.Add("@NgaySinh", SqlDbType.DateTime, 50);
            command.Parameters.Add("@GioiTinh", SqlDbType.NVarChar, 10);
            command.Parameters.Add("@QueQuan", SqlDbType.NVarChar, 100);
            command.Parameters.Add("@DiaChiHT", SqlDbType.NVarChar, 100);
            command.Parameters.Add("@MaLop", SqlDbType.NVarChar, 10);
            command.Parameters.Add("@SoTinChiDaDat", SqlDbType.Int, 10);
            command.Parameters.Add("@DiemTichLuy", SqlDbType.Float, 10);
            command.Parameters.Add("@SoTinChiDaDKi", SqlDbType.Int, 10);
            command.Parameters["@MaSV"].Value          = gv.MaSV1;
            command.Parameters["@HoTen"].Value         = gv.HoTen1;
            command.Parameters["@NgaySinh"].Value      = gv.NgaySinh1;
            command.Parameters["@GioiTinh"].Value      = gv.GioiTinh1;
            command.Parameters["@QueQuan"].Value       = gv.QueQuan1;
            command.Parameters["@DiaChiHT"].Value      = gv.DiaChiHT1;
            command.Parameters["@MaLop"].Value         = gv.MaLop1;
            command.Parameters["@SoTinChiDaDat"].Value = gv.SoTinChiDaDat1;
            command.Parameters["@DiemTichLuy"].Value   = gv.DiemTichLuy1;
            command.Parameters["@SoTinChiDaDKi"].Value = gv.SoTinChiDaDKi1;

            Conn.Open();
            command.ExecuteNonQuery();
            Conn.Close();
        }
 private void btnSua_Click(object sender, EventArgs e)
 {
     try
     {
         string      masv = txtMaSV.Text;
         string      ten  = txtTenSV.Text;
         DateTime    ns   = DateTime.Parse(dtpNgaySinh.Text, CultureInfo.InvariantCulture);
         string      gt   = comboBox1.Text;
         string      qq   = txtQueQuan.Text;
         string      dc   = txtDiaChiHT.Text;
         string      mal  = cboMaLop.Text;
         int         dd   = int.Parse(txtSoTCDaDat.Text, CultureInfo.InvariantCulture);
         float       diem = float.Parse(txtDiemTichLuy.Text, CultureInfo.InvariantCulture);
         int         dk   = int.Parse(txtSoTCDaDKy.Text, CultureInfo.InvariantCulture);
         tblSinhVien hp   = new tblSinhVien(masv, ten, ns, gt, qq, dc, mal, dd, diem, dk);
         busSinhVien.InsertSinhVien(hp);
         MessageBox.Show("them  " + ten + "  thanh cong");
         dgvSinhVien.DataSource = busSinhVien.getSinhVien();
     }
     catch
     {
         MessageBox.Show("co loi xay ra");
     }
 }