Ajax method call

I am trying to call a simple method in my code behind using Jquery with Ajax. But I get a 404 not found exception everytime. Unfortunately this is a web forms solution. So I dont have all the perks of MVC ๐Ÿ™

It does get into the javascript method and gives the alert but wonโ€™t go into my c# method. My previous experience of using this Jquery method is in an MVC website. Is it compatible with webforms sites?

My Javascript is:

$(document).ready(function() {

              $('#btn_<%=UserStuff.tag %>').click(function() {                    

                  var value = $('#<%#Eval("tag") %>twink').val();
                  something(value);                    
              });
          });


          function something(theval) {

            alert(theval);

              $.ajax({
                  type: "POST",
                  url: "/Default.aspx/MyMethod?something=" + theval,
                  data: "{}",
                  contentType: "application/json; charset=utf-8",
                  dataType: "json",
                  success: function(msg) {
                      alert(msg);
                  }
              });
          }
}

And my C# code is:
   public JsonResult MyMethod(string something)
{
    JsonResult ret = new JsonResult();      

    return ret;
}

Thanks in advance.

Answers:

Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & Iโ€™ll get back to you as soon as possible.

Method 1

Your method returns JsonResult. This is MVC specific and you cannot use it in a webforms application.

If you want to call methods in the code behind in a classic WebForms application you could use PageMethods:

[WebMethod]
public static string GetDate()
{
    return DateTime.Now.ToString();
}

And then to call the method:
$.ajax({
    type: 'POST',
    url: 'PageName.aspx/GetDate',
    data: '{ }',
    contentType: 'application/json; charset=utf-8',
    dataType: 'json',
    success: function(msg) {
        // Do something interesting here.
    }
});

And hereโ€™s a full working example I wrote for you:
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Services" %>
<script type="text/C#" runat="server">
    [WebMethod]
    public static string SayHello(string name)
    {
        return "Hello " + name;
    }
</script>
<!DOCTYPE html>
<html>
<head>
    <title></title>
    <script type="text/javascript" src="/scripts/jquery-1.4.1.js"></script>
    <script type="text/javascript">
        $(function () {
            $.ajax({
                type: 'POST',
                url: 'default.aspx/sayhello',
                data: JSON.stringify({ name: 'John' }),
                contentType: 'application/json; charset=utf-8',
                dataType: 'json',
                success: function (msg) {
                    // Notice that msg.d is used to retrieve the result object
                    alert(msg.d);
                }
            });
        });
    </script>
</head>
<body>
    <form id="Form1" runat="server">

    </form>
</body>
</html>

PageMethods are not limited to simple argument types. You could use any type as input and output, it will be automatically JSON serialized.


All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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