return json from Javascript to aspx with Ajax

Question

I'm using .NET 4.5, I used this code from a WCF service to Javascript this worked fine. Now I can't seem to figure out how to send data back to the aspx page also with Ajax. What am I doing wrong?

Javascript called when pressing a button:

function sendEmeaDataToWcf(object) {
    $.ajax({
        type: "POST",
        url: "EditFeedEmea.aspx/UpdateEmeaData",
        data: JSON.stringify({ postData: "Test" }),
        processData: false,
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        async: true,
        success: function() {
            console.log("Emea Data loaded");
        },
        error: showError
    });
}

The code in the code behind:

[WebMethod]
public void UpdateEmeaData(string postData)
{

}

He doesn't even get to the webmethod. I get a 500 error (jqXhr.status == 500). Receiving data from the same page works well. I also tried to remove processData, dataType, async, charset. Still nothing...

You could check the answer of your aspnet server in the network tab of chrome dev tools, would help. — Florian F.
– Florian F., Commented Dec 30, 2013 at 16:33
500 error means server side internal error. First check about the "static" keyword for webmethod. As Florian tells, do use Chrome Developer options or Firebug to check the details of error. — Nagaraj Tantri
– Nagaraj Tantri, Commented Dec 30, 2013 at 17:07

Gary.S · Accepted Answer · 2013-12-30 16:45:07Z

2

Your webmethod UpdateEmeaData needs to be static for this to work.

[WebMethod]
public static void UpdateEmeaData(string postData)
{

}

edited Dec 30, 2013 at 16:45

answered Dec 30, 2013 at 16:33

Gary.S

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