public class HomeController : Controller
    {

        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Index(FormCollection collection)
        {
            var inputCount = 0; //前端文本框的數(shù)量
            var inputValues = new List<string>();//前端文本款的值放到這個(gè)集合

            if (int.TryParse(collection["TextBoxCount"], out inputCount))
            {
                for (int i = 1; i <= inputCount; i++)
                {
                    if (!string.IsNullOrEmpty(collection["textbox" + i]))
                    {
                        inputValues.Add(collection["textbox" + i]);
                    }
                }
            }
            TempData["InputResult"] = inputValues;
            return View();
        }
    }

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<div>
    @if (TempData["InputResult"] != null)
    {
        <ul>
            @foreach (var item in (List<string>) TempData["InputResult"])
            {
                <li>@item</li>
            }
        </ul>
    }
</div>

@using (Html.BeginForm("Index", "Home", FormMethod.Post))
{
    <div>
        <div id="TextBoxesGroup">
            <input type="text" id="textbox1" name="textbox1"/>
        </div>
        <hr/>
        @Html.Hidden("TextBoxCount", 1)
        <input type="button" value="添加" id="add"/>
        <input type="button" value="移除" id="remove"/>
        <input type="submit" value="提交"/>
    </div>
}

@section scripts
{
    <script type="text/javascript">
        $(document).ready(function() {
            //默認(rèn)焦點(diǎn)
            $('#textbox1').focus();

            //點(diǎn)擊添加
            $('#add').click(function() {
                //從隱藏域中獲取當(dāng)前文本框的數(shù)量
                var currentCount = parseInt($('#TextBoxCount').val(), 10);

                //文本框數(shù)量加1
                var newCount = currentCount + 1;

                //創(chuàng)建新的文本框
                var newInput = $(document.createElement('Input')).attr({
                    "type": "text",
                    "id": "textbox" + newCount,
                    "name": "textbox" + newCount
                });

                //把新的文本框附加到區(qū)域中
                $('#TextBoxesGroup').append(newInput);

                //把當(dāng)前文本框的數(shù)量賦值到用來(lái)計(jì)數(shù)隱藏域
                $('#TextBoxCount').val(newCount);

                //把焦點(diǎn)轉(zhuǎn)移到新添加的文本框中來(lái)
                $('#textbox' + newCount).focus();
            });

            //點(diǎn)擊移除
            $('#remove').click(function() {
                //從隱藏域中獲取當(dāng)前文本框的數(shù)量
                var currentCount = parseInt($('#TextBoxCount').val(), 10);
                if (currentCount == 0) {
                    alert('已經(jīng)沒(méi)有文本框可以被移除了~~');
                    return false;
                }
                //移除當(dāng)前文本框
                $('#textbox' + currentCount).remove();

                //把新的文本框計(jì)數(shù)賦值給隱藏域
                var newCount = currentCount - 1;
                $('#TextBoxCount').val(newCount);
            });
        });
    </script>
}