C# Jquery获取列表项

如何获取第二个列表项的值并分配给文本框。例如，我的第二个列表项是“编辑配置文件”，然后在textbox1 textchange之后，textbox2将自动分配“编辑配置文件” 这是我的代码

   <script language ="javascript" type="text/javascript">
    $(document).ready(function () {
        $("#TextBox1").bind('change', function (e) {
            if ($("#TextBox1").val() != '') {
                sendData();
            }

        });


        function sendData() {
            var loc = window.location.href;
            loc = (loc.substr(loc.length - 1, 1) == "/") ? loc + "t1ViewDB.aspx" : loc;
            $.ajax({
                type: "POST",
                url: loc + "/GetModuleList",
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function (msg) {
                    if (msg.d) {

                        //Get the second list item and assign value to textbox2
                        //???
                        $("#TextBox2").val('');


                    }
                },
                error: function () {
                    alert("An unexpected error has occurred during processing.");
                }

            });
        }
    });


</script>

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仅按索引引用：

 $("#TextBox2").val(msg.d[1]['Value'] );

 $("#TextBox2").val(msg.d[1]['Value'] );