private bool CheckAvailability() { bool recordStstus = false; try { if (oStudentBL.CheckAvailability(txtStudentId.Text.Trim())) { txtStudentId.Clear(); txtStudentId.Focus(); MessageBox.Show("Record already exist.!"); recordStstus = true; } else { txtStudentId.Focus(); } } catch (Exception) { throw; } return(recordStstus); }