jquery ajax error while using c# function

Question

I want to use jquery ajax in my project. I just run a simple ajax with code behind. I got the alert error as "500 internal error"

<script type="text/javascript" src="jquery-1.2.6.min.js"></script> 
<script type="text/javascript">

     $(document).ready(function () {

         $.ajax({
             type: "POST",
             url: "listprac.aspx/sayHello",
             contentType: "application/json; charset=utf-8",
             data: "{}",
             dataType: "json",
             success: AjaxSucceeded,
             error: AjaxFailed
         });
     });
     function AjaxSucceeded(result) {
         alert(result.d);
     }
     function AjaxFailed(result) {
         alert(result.status + ' ' + result.statusText);
     }  

  </script>

My code behind:

 public static string sayHello()
    {
        return "hello ";
    }

Sang Suantak · Accepted Answer · 2012-05-25 04:02:14Z

1

For aspx pages you'll have to decorate your code-behind method with the [WebMethod()] attribute:

[WebMethod()]
public static string sayHello()
{
    return "hello ";
}

Edit: WebMethod is within the System.Web.Services.WebService namespace.

edited May 25, 2012 at 4:02

answered May 25, 2012 at 3:51

Sang Suantak

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1 Comment

Sang Suantak Over a year ago

You'll have to include the System.Web.Services.WebService namespace. I've updated my answer as well.

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