مشکل با page method

[mahsa.n]

سلام
چرا مقدار برگشتی از page method در تگ div نمایش داده نمیشه؟؟؟؟




$.ajax({
type: "POST",
url: "GridView.aspx/ShowPrivateMessage",
//Pass the selected record id
data: "{'args': '" + record_id + "'}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {

$("#li").html (msg);
},
error: function (msg) {
alert("error");
}
});







[System.Web.Services.WebMethod]
public static string ShowPrivateMessage(string args)
{
PrivateMessageANDPrivateMessageDataContext db = new PrivateMessageANDPrivateMessageDataContext();
PrivateMessage p = new PrivateMessage();
var query = from q in db.PrivateMessages
where q.ID == Convert.ToInt32(args)
select q;

if (query.First().Readed == false)
{
query.First().Readed = true;
}
db.SubmitChanges();
return query.First().Message;
}

[alishokr]

با عرض سلام .
روی متدتون Attribute زیر رو اضافه کنین:


[WebGet(ResponseFormat = WebMessageFormat.Json)]
[System.Web.Services.WebMethod]
public static string ShowPrivateMessage(string args)
{
.
.
.
}


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