批量更新GridViewRow中的值

            string strtolmoney = "";
            string strid = "";

            foreach (GridViewRow row in this.mygvsg1.Rows)
            {
                strid += this.mygvsg1.DataKeys[row.RowIndex].Value.ToString() + ";";
                TextBox txtgoods_no = (TextBox)row.FindControl("txtgoods_no");

                TextBox txttolmoney = (TextBox)row.FindControl("txttolmoney");
                strtolmoney += txttolmoney.Text.ToString().Trim().Replace("'", "''") + ";";
            }