带有空值的Jquery对话框

Question

我的ASP.NET页面上有一个jQuery UI对话框：

        $(function () {
            var dialog,
              fascicolo = getQuerystring("fascicolo"),
              annotazione = $("#nota").val();

            function addUser() {
                var nota = {};
                nota.fascicolo = fascicolo;
                nota.notastr = annotazione;
                $.ajax({
                ...
                    }
                });
                dialog.dialog("close");
            }

            dialog = $("#dialog-form").dialog({
                autoOpen: false,
                height: 300,
                width: 350,
                modal: true,
                buttons: {
                    "Inserisci la nota": addUser,
                    Cancel: function () {
                        dialog.dialog("close");
                    }
                },
                close: function () {
                }
            });
            $("#create-user").button().on("click", function () {
                event.preventDefault();
                dialog.dialog("open");
            });
        });
  </script>

这是我的div：

<div id="dialog-form" title="Create new nota">
<fieldset>
  <label for="nota">Nota</label>
  <input type="text" name="nota" id="nota" value=""/>
  <input type="submit" tabindex="-1" style="position:absolute; top:-1000px"/>
</fieldset>
</div>

这就是问题，用json调用的web方法得到 $（＆＃34;＃nota＆＃34;）。val（）为空！帮帮我...我试过了 .parent().appendTo(jQuery("form:first")); open: function (type, data) {$(this).parent().appendTo(jQuery("form:first"))},解决方案，但没有......

修改

这是ajax调用

function addUser() {
                var nota = {};
                nota.fascicolo = fascicolo;
                nota.notastr = annotazione;
                $.ajax({
                    type: "POST",
                    url: "dettagliofascicolo2.aspx/SaveNota",
                    data: '{nota: ' + JSON.stringify(nota) + '}',
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    success: function (response) {
                        alert("Nota inserita correttamente!");
                        window.location.reload();
                    }
                });
                dialog.dialog("close");
            }

这是由ajax调用的webmethot：

<WebMethod()> _
<ScriptMethod()> _
     Public Shared Sub SaveNota(nota As nota)
    Dim conString As String =           ConfigurationManager.ConnectionStrings("connMySql").ConnectionString
    Dim myConnection As MySqlConnection = New MySqlConnection(conString)

    Dim stringa_ins As String = "INSERT INTO `note_fascicolo`(`fascicolo`, `note`) VALUES (@fascicolo,@nota)"

    Dim dbcomm As New MySqlCommand(stringa_ins, myConnection)

    dbcomm.Parameters.Add("@fascicolo", MySqlDbType.Int32)
    dbcomm.Parameters.Add("@nota", MySqlDbType.VarChar)

    dbcomm.Parameters("@fascicolo").Value = nota.fascicolo
    dbcomm.Parameters("@nota").Value = nota.notastr

    Dim ident As Integer

    Try
        myConnection.Open()
        ident = dbcomm.ExecuteScalar()

    Catch ex As Exception
        'Response.Write(ex.Message)
        'Response.End()

    End Try

    myConnection.Close()
End Sub

 Public Class nota
    Public Property fascicolo() As String
        Get
            Return _fascicolo
        End Get
        Set(value As String)
            _fascicolo = value
        End Set
    End Property
    Private _fascicolo As String
    Public Property notastr() As String
        Get
            Return _notastr
        End Get
        Set(value As String)
            _notastr = value
        End Set
    End Property
    Private _notastr As String
End Class