数据分页一只是一个老生常谈的问题,只要是做系统开发,一般都会牵扯到。最新学习了Razor,用到分页功能,分享下如何实现Ajax分页。
1.准备工作
网上有现成的分页工具MVCPager,最新的是1.5版本,综合比较后感觉这个控件还是蛮好的,决定采用
MVCPager源码和Demo:http://mvcpager.codeplex.com/releases/view/64098
源码中采用了Linq,由于自己项目没用Linq,所以对MVCpager稍作了修改,修改后的dll:MVCWeb.rar
其实就改了一个地方,数据类型由IQuery改成IList,加入一个TotalCount(总记录数量)参数
2.实现
首先来个图,吊吊胃口
①Model,没什么好说
using System;
using System.Collections;
namespace Model
{
public class comnotices
{
#region 构造函数
public comnotices()
{}
#endregion
#region 属性
/// <summary>自动增长</summary>
public int nid
{
get;
set;
}
/// <summary>信息类别</summary>
public string category
{
get;
set;
}
/// <summary>信息标题</summary>
public string title
{
get;
set;
}
/// <summary>信息内容</summary>
public string infodetails
{
get;
set;
}
/// <summary>发布时间</summary>
public string publishdate
{
get;
set;
}
/// <summary>发布人</summary>
public string publishman
{
get;
set;
}
/// <summary>访问量</summary>
public int hits
{
get;
set;
}
#endregion
#region 获得自增键
private string ReturnAutoID()
{
return "nid";
}
#endregion
}
}
②Controller
[OutputCache(Duration = 300)]
//condition是条件,page是当前页面
public ActionResult Index(string condition = "", int page = 1)
{
if (condition.ToLower() != "all")
condition = " category='" + Server.HtmlDecode(condition.Replace("'", "")) + "' ";
else condition = "";
//ToPagedList就是修改的MVCpager方法,参数:当前页号,分页大小,总记录数量
//FindAllByPage是自己实现的分页方法,根据条件只取当前页面的数据
PagedList<comnotices> notices = mgr.FindAllByPage(((page - 1) * 20).ToString(), "20", "", condition, 11).ToPagedList(page, 20, int.Parse(mgr.GetTotalCount("", condition)));
if (Request.IsAjaxRequest())
return PartialView("NewsAjaxList", notices);
return View(notices);
}
③View页面
@*这里注意*@
@model Webdiyer.WebControls.Mvc.PagedList<Model.comnotices>
@{
ViewBag.Title = "xxxxxx";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<div class="submain">
<div class="subleft">
.............
</div>
<div class="subright">
.............
@{Html.RenderPartial("NewsAjaxList", Model); }@*这里注意,用于AJAX局部刷新*@
</div>
</div>
④局部视图(NewsAjaxList.cshtml)
@using Webdiyer.WebControls.Mvc
@model PagedList<Model.comnotices>
<div id="CJ_NEWSLIST">
<ul>
@foreach (var news in Model)
{
<li><a href="/News/d@{@news.nid}" title="@news.title">[@news.category]@news.title</a> <span class="newsdate">HITS:@news.hits @news.publishdate</span></li>
}
</ul><br />
@*分页控件显示的地方一定要放在刷新的div里面,不然会出现双重控件*@
<div style="text-align:right;">
@Html.AjaxPager(Model, new PagerOptions() { PageIndexParameterName = "page", ShowDisabledPagerItems = true, AlwaysShowFirstLastPageNumber = true, CssClass = "pages" }, new AjaxOptions { UpdateTargetId = "CJ_NEWSLIST" })
</div>
@*需用样式的分页,去掉css即可*@
<div style="text-align:right;">
@Html.AjaxPager(Model, new PagerOptions() { PageIndexParameterName = "page", ShowDisabledPagerItems = true, AlwaysShowFirstLastPageNumber = true }, new AjaxOptions { UpdateTargetId = "CJ_NEWSLIST" })
</div>
</div>
⑤css样式
.pages { color:#000;font-weight:bold; font-size:13px;}
.pages .item{padding: 3px 6px;font-size: 13px;}
.pages .cpb {color:red;padding: 1px 6px;font-size: 13px;}
.pages a { text-decoration:none;padding: 0 5px; border: 1px solid #ddd;margin:0 2px; color:#000;font-weight:normal;}
.pages a:hover { background-color: #3666d4; color:#fff;border:1px solid #3666d4; text-decoration:none;font-weight:normal;}
⑥不要忘记应用必要的js库,这里采用的是jquery库
<script src="@Url.Content("~/Scripts/jquery-1.4.4.min.js")" type="text/javascript"></script>
<script type="text/javascript" src=@Url.Content("/Scripts/jquery.unobtrusive-ajax.min.js")></script>
OK至此对于MVC3.0一个按条件分页功能即可实现了,而且是局部刷新的。更多模式你可参考MVCPager的Demo
转载出处:http://www.cnblogs.com/qidian10