protected void m_grv_gd_assign_su_kien_cho_giang_vien_RowDeleting(object sender, GridViewDeleteEventArgs e) { try { decimal v_dc_id_noi_dung_tt = CIPConvert.ToDecimal(m_grv_gd_assign_su_kien_cho_giang_vien.DataKeys[e.RowIndex].Value); m_us_v_gd_assign_su_kien_giang_vien.DeleteByID(v_dc_id_noi_dung_tt); load_data_2_grv(); m_lbl_mess.Text = "Bạn đã xóa dữ liệu thành công!"; } catch (Exception v_e) { CSystemLog_301.ExceptionHandle(this, v_e); } }