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MVC分页

2024-07-02 17:27:30   230人阅读

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using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Web;
using System.Text;
using System.Web.Mvc;
using System.Web.Routing;
using System.Data.Objects.DataClasses;
namespace System.Web.Mvc
{
    public static class PagerHelper
    {
        /// <summary>
        /// 分页
        /// </summary>
        /// <param name="helper"></param>
        /// <param name="id">分页id</param>
        /// <param name="currentPageIndex">当前页</param>
        /// <param name="pageSize">分页尺寸</param>
        /// <param name="recordCount">记录总数</param>
        /// <param name="htmlAttributes">分页头标签属性</param>
        /// <param name="className">分页样式</param>
        /// <param name="mode">分页模式</param>
        /// <returns></returns>
        public static string Pager(this HtmlHelper helper, string id, int currentPageIndex, int pageSize, int recordCount, object htmlAttributes, string className, PageMode mode)
        {
            TagBuilder builder = new TagBuilder("table");
            builder.IdAttributeDotReplacement = "_";
            builder.GenerateId(id);
            builder.AddCssClass(className);
            builder.MergeAttributes(new RouteValueDictionary(htmlAttributes));
            builder.InnerHtml = GetNormalPage(currentPageIndex, pageSize, recordCount, mode);
            return builder.ToString();
        }
        /// <summary>
        /// 分页
        /// </summary>
        /// <param name="helper"></param>
        /// <param name="id">分页id</param>
        /// <param name="currentPageIndex">当前页</param>
        /// <param name="pageSize">分页尺寸</param>
        /// <param name="recordCount">记录总数</param>
        /// <param name="className">分页样式</param>
        /// <returns></returns>
        public static string Pager(this HtmlHelper helper, string id, int currentPageIndex, int pageSize, int recordCount, string className)
        {
            return Pager(helper, id, currentPageIndex, pageSize, recordCount, null, className, PageMode.Normal);
        }
        /// <summary>
        /// 分页
        /// </summary>
        /// <param name="helper"></param>
        /// <param name="id">分页id</param>
        /// <param name="currentPageIndex">当前页</param>
        /// <param name="pageSize">分页尺寸</param>
        /// <param name="recordCount">记录总数</param>
        /// <returns></returns>
        public static string Pager(this HtmlHelper helper, string id, int currentPageIndex, int pageSize, int recordCount)
        {
            return Pager(helper, id, currentPageIndex, pageSize, recordCount, null);
        }
        /// <summary>
        /// 分页
        /// </summary>
        /// <param name="helper"></param>
        /// <param name="id">分页id</param>
        /// <param name="currentPageIndex">当前页</param>
        /// <param name="pageSize">分页尺寸</param>
        /// <param name="recordCount">记录总数</param>
        /// <param name="mode">分页模式</param>
        /// <returns></returns>
        public static string Pager(this HtmlHelper helper, string id, int currentPageIndex, int pageSize, int recordCount, PageMode mode)
        {
            return Pager(helper, id, currentPageIndex, pageSize, recordCount, null, mode);
        }
        /// <summary>
        /// 分页
        /// </summary>
        /// <param name="helper"></param>
        /// <param name="id">分页id</param>
        /// <param name="currentPageIndex">当前页</param>
        /// <param name="pageSize">分页尺寸</param>
        /// <param name="recordCount">记录总数</param>
        /// <param name="className">分页样式</param>
        /// <param name="mode">分页模式</param>
        /// <returns></returns>
        public static string Pager(this HtmlHelper helper, string id, int currentPageIndex, int pageSize, int recordCount, string className, PageMode mode)
        {
            return Pager(helper, id, currentPageIndex, pageSize, recordCount, null, className, mode);
        }
        /// <summary>
        /// 获取普通分页
        /// </summary>
        /// <param name="currentPageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="recordCount"></param>
        /// <returns></returns>
        private static string GetNormalPage(int currentPageIndex, int pageSize, int recordCount, PageMode mode)
        {
            int pageCount = (recordCount % pageSize == 0 ? recordCount / pageSize : recordCount / pageSize + 1);
            StringBuilder url = new StringBuilder();
            url.Append(HttpContext.Current.Request.Url.AbsolutePath + "?page={0}");
            NameValueCollection collection = HttpContext.Current.Request.QueryString;
            string[] keys = collection.AllKeys;
            for (int i = 0; i < keys.Length; i++)
            {
                if (keys[i].ToLower() != "page")
                    url.AppendFormat("&{0}={1}", keys[i], collection[keys[i]]);
            }
            StringBuilder sb = new StringBuilder();
            sb.Append("<tr><td>");
            sb.AppendFormat("总共{0}条记录,共{1}页,当前第{2}页  ", recordCount, pageCount, currentPageIndex);
            if (currentPageIndex == 1)
                sb.Append("<span>首页</span> ");
            else
            {
                string url1 = string.Format(url.ToString(), 1);
                sb.AppendFormat("<span><a href=http://www.mamicode.com/{0}>首页 ", url1);
            }
            if (currentPageIndex > 1)
            {
                string url1 = string.Format(url.ToString(), currentPageIndex - 1);
                sb.AppendFormat("<span><a href=http://www.mamicode.com/{0}>上一页 ", url1);
            }
            else
                sb.Append("<span>上一页</span> ");
            if (mode == PageMode.Numeric)
                sb.Append(GetNumericPage(currentPageIndex, pageSize, recordCount, pageCount, url.ToString()));
            if (currentPageIndex < pageCount)
            {
                string url1 = string.Format(url.ToString(), currentPageIndex + 1);
                sb.AppendFormat("<span><a href=http://www.mamicode.com/{0}>下一页 ", url1);
            }
            else
                sb.Append("<span>下一页</span> ");
 
            if (currentPageIndex == pageCount)
                sb.Append("<span>末页</span> ");
            else
            {
                string url1 = string.Format(url.ToString(), pageCount);
                sb.AppendFormat("<span><a href=http://www.mamicode.com/{0}>末页 ", url1);
            }
            return sb.ToString();
        }
        /// <summary>
        /// 获取数字分页
        /// </summary>
        /// <param name="currentPageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="recordCount"></param>
        /// <param name="pageCount"></param>
        /// <param name="url"></param>
        /// <returns></returns>
        private static string GetNumericPage(int currentPageIndex, int pageSize, int recordCount, int pageCount, string url)
        {
            int k = currentPageIndex / 10;
            int m = currentPageIndex % 10;
            StringBuilder sb = new StringBuilder();
            if (currentPageIndex / 10 == pageCount / 10)
            {
                if (m == 0)
                {
                    k--;
                    m = 10;
                }
                else
                    m = pageCount % 10;
            }
            else
                m = 10;
            for (int i = k * 10 + 1; i <= k * 10 + m; i++)
            {
                if (i == currentPageIndex)
                    sb.AppendFormat("<span><font color=red><b>{0}</b></font></span> ", i);
                else
                {
                    string url1 = string.Format(url.ToString(), i);
                    sb.AppendFormat("<span><a href=http://www.mamicode.com/{0}>{1} ", url1, i);
                }
            }
 
            return sb.ToString();
        }
    }
    /// <summary>
    /// 分页模式
    /// </summary>
    public enum PageMode
    {
        /// <summary>
        /// 普通分页模式
        /// </summary>
        Normal,
        /// <summary>
        /// 普通分页加数字分页
        /// </summary>
        Numeric
    }
}

　　html代码

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<div id="pageNav" class="pageinator">
      @Html.ShowPageNavigate((int)ViewData["pageindex"], (int)ViewBag.pageSize, (int)ViewBag.totalCount);
  </div>

　　控制器

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shopEntities shop = new shopEntities();
     public ActionResult Index()
     {
         //IQueryable<tbl_order> order = (from a in shop.tbl_order select a).OrderBy(a=>a.id).Skip(10).Take(10);
         //ViewData["order"] = order;
         //return View();
 
         int pageIndex = Request["pageIndex"] == null ? 1 : int.Parse(Request["pageIndex"]);
         int pageSize = Request["pageSize"] == null ? 10 : int.Parse(Request["pageSize"]);
         int totalCount = 0;
 
         //给前台传递  分页的参数数据
         ViewData["pageIndex"] = pageIndex;
         //ViewData["pageSize"] = pageSize;
         ViewBag.pageSize = pageSize;
         //总条数
         totalCount = shop.tbl_order.Count();
         ViewBag.totalCount = totalCount;
 
         //把当前页面数据发送到前台。
         //ViewData.Model = db.UserInfo.ToList();
         //List<tbl_order> pp = shop.tbl_order
         //                   .OrderBy(u => u.id)
         //                   .Skip((pageIndex - 1) * pageSize)
         //                   .Take(pageSize).ToList();
 
         IQueryable<tbl_order> pp = shop.tbl_order
                           .OrderBy(u => u.id)
                           .Skip((pageIndex - 1) * pageSize)
                           .Take(pageSize);
         return View(pp);
     }

　　

 


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