private bool CheckRegNo()
        {
            bool valid = true;

            sb = new StringBuilder();

            if (m_oRegister.CheckRegNo(m_lRegisterId, txtRegNo.Text) == true)
            {
                valid = false;
                sb.Append(" * Reg No already Exists" + Environment.NewLine);
                errorProvider1.SetError(txtRegNo, "Reg No already Exists");
            }
            else
            {
                errorProvider1.SetError(txtRegNo, "");
            }
            return(valid);
        }