private void updateGrade() { try { if (!txtGradeId.Text.Trim().Equals(string.Empty)) { GradeDTO oGradeDTO = new GradeDTO(); oGradeDTO.GradeId = Convert.ToInt16(txtGradeId.Text.Trim()); oGradeDTO.SubjectId = cmbSubject.SelectedValue.ToString(); oGradeDTO.Description = txtDescription.Text.Trim(); oGradeDTO.LowerLimit = Convert.ToInt16(txtLowerLimit.Text.Trim()); oGradeDTO.UpperLimit = Convert.ToInt16(txtUpperLimit.Text.Trim()); oGradeDTO.ModifiedBy = "Kaveen"; oGradeDTO.ModifiedDateTime = DateTime.Now; if (oGradeBL.UpdateGrade(oGradeDTO)) { ClearControls(); filterBySubjectId(); MessageBox.Show("Record Updated successfully.!"); } } else { txtGradeId.Focus(); } } catch (Exception ex) { throw ex; } }