Service AJAX requests with webmethod in ASPX page
I am trying to service AJAX requests with a method in my .aspx page. For some reason I am not getting the data returned that I want. Can anybody tell me what I am doing wrong?
mypage.aspx:
<%@ Page Language="VB" Title="My Page" %>
<%@ Import Namespace="System.Web.Services" %>
<%@ Import Namespace="System.Collections.Generic" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub Page_Load(sender As Object, e As System.EventArgs)
End Sub
<WebMethod()> Public Function testmethod() As Integer
Return 5
End Function
</script>
<html>
<!--...rest of page including mybutton and myresults-->
JQuery:
$("#mybutton").click(function() {
$.ajax({
type: "POST",
url: "mypage.aspx/testmethod",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
alert("success");
$("#myresults").html(msg.d);
},
error: function(msg) {
alert("error:" + JSON.stringify(msg));
}
});
});
When I click mybutton I get an alert "error:" and then whole lot of HTML that says:
Unknown web method testmethod.
Parameter name: methodName
Answer
The method needs to be Shared:
<WebMethod()> Public Shared Function testmethod() As Integer
Return 5
End Function
Also, I'm not sure that page methods are supported when you don't use a code-behind file.