.net MVC4 来一个简单的分页代码

action

 VodeEntities db = new NewVode.Models.VodeEntities();
        int pagesize = 3;
        public ActionResult Index(string title, int page = 1)
        {
            var sql = "select * ,row_number() over ( order by id desc ) as rownum from vode";

            if (!string.IsNullOrEmpty(title))
            {
                sql = string.Format("{0} where title like '%{1}%'", sql, title);
            }

            var conn = db.Database.Connection;
            var sql2 = string.Format("select top {1} * from ({0}) as a where a.rownum>({2}-1)*{1} and a.rownum<={1}*{2}", sql, pagesize, page);
            var list = conn.Query<Vode>(sql2);

            ViewBag.curPage = page;
            var total = conn.QueryFirst<int>("select count(id) from (" + sql + ") as a");
            ViewBag.curPageTotal =Math.Ceiling((double)( total / pagesize));
            ViewBag.stitle = title;
            return View(list);
        }

html

@model IEnumerable<NewVode.Models.Vode>
@{
    ViewBag.Title = "Index";
}

<script src="~/Scripts/jquery-1.8.2.js"></script>
<h2>Index</h2>
<form action="/home/index" method="post">

    标题： <input name="title" id="title" value="@ViewBag.stitle" />
    <input type="button" value="查询 " id="btnSearch"/>
    <input type="hidden" id="page" name="page" value="@ViewBag.curPage" />
    @if (Model.Count() == 0)
    {
        <div>
            无数据
        </div>
    }
    else
    {
        <div>

            @foreach (var item in Model)
            {
                <div>
                    @item.title
                </div>
            }
            <div id="pagebar">

                <a href="javascript:;" onclick="goto(-1)" id="prev">上一页</a>
                <a href="javascript:;" onclick="goto(1)" id="next">下一页</a>
                <select>
                    @for (int i = 1; i <= ViewBag.curPageTotal; i++)
                    {
                        <option value="@i">@i</option>
                    }
                </select>
            </div>
        </div>
    }

</form>

<script>
    var curpage = parseInt( @ViewBag.curPage);
    var total = parseInt(@ViewBag.curPageTotal);
    
    if (total <=1) {
        $("#pagebar").hide();
    } else {
        if (curpage == 1) {
            $("#prev").disabled = true;
        }
        if (curpage == total) {
            $("#next").hide();
        }
    }
    function goto(v) {
        var n = curpage + v;
        if (n <= 0) {
            alert("已经是第一页了");
        }
        else if (n > total) {
            alert("已到最后一页了");
        }
        else {
            $("#page").val(n);
            $("form").submit();
        }
    }
    $("form select").val(curpage).change(function () {
        $("#page").val($(this).val());
        $("form").submit();

    });
    $("#btnSearch").click(function () {
        $("#page").val(1);
        $("form").submit();
    })
</script>