Question

    [HttpPost]
    public ActionResult accountchange(int id, int accountid, bool activate)
    {
        // Operations
        return Json(new { Model = model, Result = true, Message = "Changed Successfully });
    }

    $('#accountchange-button').click(function () {
        alert("");
        $.post("url/accountchange/", {id:1, accountid:1, activate:1},
            function (data) { $('.result').html(data); }, "json");

    });

always got:

POST http://localhost/account/accountchange/ 500 (Internal Server Error)
                f.support.ajax.f.ajaxTransport.sendjquery.min.js:4
                f.extend.ajaxjquery.min.js:4
                f.each.f.(anonymous function)jquery.min.js:4
                (anonymous function)demo:105
                f.event.dispatchjquery.min.js:3
                f.event.add.h.handle.i

any idea?

Answer 1

In your code, I don’t see model being defined. That’s my best guess as to why your application is returning a 500 application error. As previously mentioned in the comment, you can use the inspect element utility to figure out what the server is actually complaining about.

[HttpPost]
public ActionResult accountchange(int id, int accountid, bool activate)
{
    // Model = model is most likely undefined
    return Json(new { Model = model, Result = true, Message = "Changed Successfully });
}