//编码文本框的回车事件

        private void txtCode_KeyUp(object sender, KeyEventArgs e)

        {

        

            if (e.KeyCode == Keys.Enter&&enter==0)

            {

                DataRow[] drs = dttory.Select("cInvcode='" + txtCode.Text + "' or cbarcode='"+txtCode.Text+"' ");

                if (drs.Length > 0)

                {

                    cinvcode = drs[0]["cinvcode"].ToString();

                    txtName.Text = drs[0]["cinvname"].ToString();

                    txtNum.Text = "1";

                    txtPice.Text = drs[0]["iinvlscost"].ToString();//fretailprice

                    minpice = drs[0]["iinvlscost"].ToString();

                    igrouptype = drs[0]["igrouptype"].ToString();

                    bservice = drs[0]["bservice"].ToString();                 

                    itaxrate = Decimal.Parse(drs[0]["itaxrate"].ToString());

                    if (txtPice.Text.Length > 0)

                    {

                        txtMoney.Text =Decimal.Round((decimal.Parse(txtNum.Text) * decimal.Parse(txtPice.Text)),2).ToString();