代码发布前端无法显示?

源码运行没有问题，发布后只有有加放单号pos10105.get_create_billno("POS10115");发布后就没有显示，其它栏也没有显示
if (edit == "new")
{
////新增时默认值
dtfrom = pos10105.getpos10105(docno);
DataRow dr = dtfrom.Tables[0].NewRow();
docno = pos10105.get_create_billno("POS10115");
dr["docno"] = docno;
dr["docdate"] = DateTime.Now;
dr["emplno"] = userno;
dr["emplnoname"] = username;
dr["dept"] = fdeptno;
dr["deptdescription"] = fdeptname;
dr["note"] = "";
dtfrom.Tables[0].Rows.Add(dr);
//string dt = Common.DataToJson.DataToJSON(dtfrom);
//context.Response.Write(dt);
StringBuilder str = new StringBuilder();
str.Append("{docno:'" + docno.ToString() + "'}");
context.Response.Write(str);
}

                             public string get_create_billno(string as_fbilltype)
    {
        string str_newfbillno = "";
        string ls_fbillno = null;
        string ls_fyear1, ls_fmonth1, ls_fmaxbillno = "", ls_fday1;
        int ll_no, ll_newno;
        DateTime adt_now = DateTime.Now;
        ls_fyear1 = adt_now.ToShortDateString().Substring(2, 2);
        ls_fmonth1 = adt_now.ToShortDateString().Substring(5, 2);
        ls_fday1 = adt_now.ToShortDateString().Substring(8, 2);

        ls_fbillno = "RE" + ls_fyear1.PadLeft(2, '0') + ls_fmonth1.PadLeft(2, '0') + ls_fday1.PadLeft(2, '0');
        ls_fmaxbillno = DbHelperSQL2.GetFileValues("select max(docno) from pos10105 where docno like '%" + ls_fbillno + "'");
        //ls_fmaxbillno = DbHelperSQL2.GetFileValues("select fmaxno from pda10008 where fbillno='POS10105'");
        if (ls_fmaxbillno.ToString().Length == 0)
        {
            ls_fbillno = "RE" + ls_fyear1.PadLeft(2, '0') + ls_fmonth1.PadLeft(2, '0') + ls_fday1.PadLeft(2, '0') + "0001";
        }
        else
        {
            ll_no = Convert.ToInt16(ls_fmaxbillno.ToString().Substring(ls_fmaxbillno.Length - 1));
            ll_newno = ll_no + 1;
            string ls_newno = ll_newno.ToString().PadLeft(4, '0');
            ls_fbillno = ls_fbillno + ls_newno;
        }
        str_newfbillno = ls_fbillno;
        return str_newfbillno;
    }

补充一下，主要用ligerui的前台aspx调用后台

function loadForm() {
$.ajax({
type: "GET",
url: "../../data/flow/message.ashx", /* 注意后面的名字对应CS的方法名称 /
data: { Action: 'form', edit: getparastr("edit"), docno: getparastr("docno"), rnd: Math.random() }, / 注意参数的格式和名称 */
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (result) {
var obj = eval(result);
for (var n in obj) {
if (obj[n] == "null" || obj[n] == null)
obj[n] = "";
}
//alert(UrlDecode("2013%2F4%2F14%200%3A00%3A00"));
alert(obj); //String 构造函数
alert(obj.docno);
$("#T_docno").ligerTextBox().setValue(obj.docno);
$("#T_docdate").val(formatTimebytype(obj.docdate, "yyyy-MM-dd"));
$("#T_fempno").val(obj.emplno);
$("#T_fempname").val(obj.emplnoname);
$("#T_fdeptno").val(obj.dept);
$("#T_fdeptname").val(obj.deptdescription);
$("#T_note").val(obj.note);
}
});
}