/// <summary>
        /// Checks mandatory fields
        /// </summary>
        /// <returns></returns>
        private bool CheckMandatory()
        {
            if (Supplier_cmb.Text == string.Empty || Supplier_cmb.SelectedIndex < 0)
            {
                messageData = new MessageData("mmce00002", Properties.Resources.mmce00002, Supplier_lbl.Text);
                popUpMessage.Warning(messageData, Text);

                Supplier_cmb.Focus();

                return(false);
            }

            return(true);
        }