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jqueryajaxweb-servicesjsonpagemethods

.net 2.0 ajax jquery pagemethod 404 object not found

in my master page, i have

<head>
<script type="text/javascript">
$(document).ready(function() {
$("#result").click(function() {
$.ajax({type: "POST",url: "ws.aspx/HelloWorld",data: "{}",contentType: "application/json; charset=utf-8",dataType: "json",success: function(msg) {
$("#result").text(msg.d);
}
});
});
</script>
</head>
<body>
<form>
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server" />
<div name="result" id="result">long clicky text</div>
</form>
</body>

in my ws.aspx page, which has no master page references, and is empty except for

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="ws.aspx.vb" Inherits="CRTWebApp.ws" %>

<html>
<head>
</head>
<body>
</body>

in my ws.aspx.vb file it is declared like this

<System.Web.Services.WebService()> _ 
Partial Public Class ws
 Inherits System.Web.UI.Page

<System.Web.Services.WebMethod()> _ 
<System.Web.Script.Services.ScriptMethod(ResponseFormat:=Script.Services.ResponseFormat.Json)> _
        Public Shared Function HelloWorld() As String
            Return "hello world"
        End Function
    End Class

in firebug, if i click on "long clicky text" this is what happens

POST HelloWorld 404 Object Not Found

ws.aspx is in the same folder, the url it spits out is the correct one, i can surf to that page (though it is empty..)

here is request and response

Response Headers
Server  Microsoft-IIS/5.1
Date    Wed, 15 Sep 2010 21:43:37 GMT
WWW-Authenticate    Negotiate NTLM
Connection  close
Content-Length  4431
Content-Type    text/html

Request Headers
Host    localhost
User-Agent  Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9 (.NET CLR 3.5.30729)
Accept  application/json, text/javascript, */*
Accept-Language en-us,en;q=0.5
Accept-Encoding gzip,deflate
Accept-Charset  ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive  115
Connection  keep-alive
Content-Type    application/json; charset=utf-8
X-Requested-With    XMLHttpRequest
Referer http://localhost/CRTWebApp/SysAdmin/cat.aspx?lang=en
Content-Length  2
Cookie  ASP.NET_SessionId=clvadayboyqwilizioi4ks55
Pragma  no-cache
Cache-Control   no-cache
Solution

  • Instead of creating of ASPX web page you should create a ASMX page. You can add new service to your Web Application if you click on the solution tree right mouse button and choose "Add", "New Item" and then choose "Web Service" template (the last one) on the list of Web Templates.

    If you use old version of Visual Studio see http://support.microsoft.com/kb/301273 or http://www.vbdotnetheaven.com/UploadFile/mmehta/SimpleWebService04262005065102AM/SimpleWebService.aspx as an example.