Unknown web method . Parameter name: methodName c#

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Ok my problem is next, this is my script...

XML

<script type="text/javascript">
        $(document).ready(function() {
            $.ajax({
                type: "POST",
                url: "Kategorije.aspx/CartState",
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                data: { },
                success: function (msg) {
                    $("#ispis").text(msg.d);
                }
            })
        });
    </script>

and here's method i'm calling

C#

public static int CartState()
   {
       DatabaseEntities db = new DatabaseEntities();

       var rez = from p in db.PrivremenaKorpa
                 where (p.SessionID == HttpContext.Current.Session.SessionID)
                 select p;
       return rez.Count();
   }

using firebug and request happens, but this is what i get as response from firebug:

Unknown web method CartState.
Parameter name: methodName

Now, i want to call "CartState" once page is loaded, and replace the div's content (Div "ispis") with the page method's return.
I'm kinda new with this, so any help would be appreciated.

Posted 1-Apr-13 13:47pm

Milos12

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pradiprenushe 2-Apr-13 1:41am

CartState is webmethod?

pradiprenushe 2-Apr-13 1:46am

Try this link http://www.stereoplex.com/blog/asp-net-ajax-and-unknown-web-method.
http://www.webcosmoforums.com/asp/17939-unknown-web-method-parameter-name-methodname-500-internal-server-error-asp-net.html
Add scriptmethod above function.

Milos12 2-Apr-13 9:47am

tyvm :)

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Milos12 · Accepted Answer · 2013-04-02T03:46:00

Thx for your help guys, its solved...the problem was here:

C#

[WebMethod, ScriptMethod(ResponseFormat = ResponseFormat.Json, UseHttpGet = false)]
    public static int CartState()
    {
        DatabaseEntities db = new DatabaseEntities();

        var rez = from p in db.PrivremenaKorpa
                  where (p.SessionID == HttpContext.Current.Session.SessionID)
                  select p;
        return rez.Count();
    }

just need to add this line of code above CartState:

[WebMethod, ScriptMethod(ResponseFormat = ResponseFormat.Json, UseHttpGet = false)]