(MVC) สอบถามเรื่องการกำหนดไม่ได้เว็บ Refresh หลังจากกดปุ่ม Upload

<script src="~/Scripts/jquery-1.10.2.js"></script>

<script type="text/javascript">
    $(document).ready(function () {
        $('input[type=radio]').change(function (e) {
            if (this.id == 'choice1') {
                $('#single').hide();
                $('.single').prop('disabled', true);

                $('#multiple').show();
                $('.multiple').prop('disabled', false);
            }
            else {
                $('#multiple').hide();
                $('.multiple').prop('disabled', true);

                $('#single').show();
                $('.single').prop('disabled', false);
            }
        });
    })
</script>

<style>
    #single{
        display:none;
    }
</style>

@using (Html.BeginForm("UploadFiles", "jQuery", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <div id="typeupload">
        <input type="radio" name="typeupload" id="choice1" checked="checked" /> Multiple
        <input type="radio" name="typeupload" id="choice2" value="single" /> Single
    </div>
    
    <div class="container" style="margin-top:50px">
        <div id="multiple">
            <input type="file" class="multiple" name="files" multiple /> <br />
        </div>
        <div id="single">
            <input type="file" class="single" name="files" /> <br />
            <input type="file" class="single" name="files" /> <br />
            <input type="file" class="single" name="files" /> <br />
        </div>
        <button class="btn btn-default">Upload</button>
    </div>
}