My jquery with ajax do not work. Internal Server Error(500)

Question

This is my jquery:

$('#nmUsuario').on("dblclick", '.clique', function () {
    CarregaDados($(this).parent().find(".idusuario").text());    
})

function CarregaDados(ajaxParameter) {
    var str = "";
    $.ajax({
        url: '/CadastroAcesso/CarregaDadosPagina',
        datatype: 'json',
        contentType: 'application/json;charset=utf-8',
        type: 'POST',
        data: { _nivel: JSON.stringify(ajaxParameter) },
        success: function (data) {
            alert(1);
            $('#txtNome').val(data.result_carrega_pagina.NM_Usuario);
        },
        error: function (error) {
            alert(2);
        }
    })
}

And this is my controller

[HttpPost]
public JsonResult CarregaDadosPagina(int _nivel)
{
      RupturaEntities db = new RupturaEntities();

      var result_carrega_pagina = db.Usuario
            .Where(n => n.IDUsuario == _nivel)
            .Select(s => new { s.NM_Usuario, s.Usuario1, s.Email }).ToList();

      return Json(result_carrega_pagina, JsonRequestBehavior.AllowGet);
}

But, my web page do not work. What I must to do? This is the error: Failed to load resource: the server responded with a status of 500 (Internal Server Error)

How I solve this problem?

Answer 1

You controller takes in an int , yet you pass in a JSON.stringify(ajaxParameter) . It needs to be in this format:

data: { _nivel: 1 }

Check your network traffic and put a breakpoint to make sure it is in the right format.