One example of jQuery infinite loop, and sending of pure string:
function YoThisIsAtest() {
    $.ajax({
        url: 'test/testera',
        type: 'POST',
        data: { latitude: $('#Latitude').val(), longitude: $('#Longitude').val(), culture: $('#Culture').val() },
        datatype: "text"
    }).done(function (msg) {
        if (!bolStop) {
            $('#myResult').html($('#myResult').html() + "
" + msg);
            YoThisIsAtest();
        }
    });
}
And C§ code should look like:
public string testera(double latitude, double longitude, string culture)
{
  return "Some text";
}