ASP.NET MVC 简单分页

1.后台Controller

 public ActionResult Index(int pageIndex = 1, int pageSize = 3)
        {
            MyDataDBEntities db = new MyDataDBEntities();
           
            //获取集合总数
            int userListCount = db.User.Count();
            //获取页数总计，计算：拿集合总数除以当前页面显示的条数的余数，如果余数为0，表示整除，则拿集合总数除以页面显示条数。如果余数不为0，则补充多加一页
            int pageCount = userListCount % pageSize == 0 ? userListCount / pageSize : (userListCount / pageSize) + 1;
            //先根据Id排序再跳过 当前页面显示数目 * 当前显示页数 - 1，再拿出当前显示的数目。假如当前第一页，则3 * （1-1）= 0 ，跳过0条数据，取出3条数据。
            var userList = db.User.OrderBy(o => o.Id).Skip(pageSize * (pageIndex - 1)).Take(pageSize);
            //传递给前端总页数
            ViewBag.pageCount = pageCount;
            //传递给前端当前页数
            ViewBag.pageIndex = pageIndex;

            return View(userList);  //传出当前实例对象
        }

2.前台代码

@if (pageCurrent <= 1)
{
    @Ajax.ActionLink("上一页", "Index", "Home", new { pageIndex = 1, pageSize = 3 }, new AjaxOptions{ UpdateTargetId = "myTab"}, new {@class = "btn btn-success"})
   // @Html.ActionLink("上一页", "Index", "Home", new {}, new { @class = "btn btn-primary" })
}
else
{
    @Ajax.ActionLink("上一页", "Index", "Home", new { pageIndex = pageCurrent - 1, pageSize = 3 }, new AjaxOptions{ UpdateTargetId = "myTab"}, new { @class = "btn btn-success" })
 //   @Html.ActionLink("上一页", "Index", "Home", new { pageIndex = pageCurrent - 1, pageSize = 3 }, new { @class = "btn btn-primary" })
}
<span>第 @pageCurrent 页/ 共 @pageAll 页</span>
@if (pageCurrent >= pageAll)
{
    @Ajax.ActionLink("下一页","Index", "Home", new {pageIndex = pageAll, pageSize = 3}, new AjaxOptions{UpdateTargetId = "myTab"}, new { @class = "btn btn-success" })
   // @Html.ActionLink("下一页", "Index", "Home", new { pageIndex = pageAll, pageSize = 3 }, new { @class = "btn btn-primary" })
}
else
{
    @Ajax.ActionLink("下一页","Index", "Home", new {pageIndex = pageCurrent + 1, pageSize = 3}, new AjaxOptions{UpdateTargetId = "myTab"}, new { @class = "btn btn-success" })
 //   @Html.ActionLink("下一页", "Index", "Home", new { pageIndex = pageCurrent + 1, pageSize = 3 }, new { @class = "btn btn-primary" })
}