• Asp.Net Mvc4分页,扩展HtmlHelper类


    1.分页方法
     
    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={0}>首页</a></span> ", url1);
                }
                if (currentPageIndex > 1)
                {
                    string url1 = string.Format(url.ToString(), currentPageIndex - 1);
                    sb.AppendFormat("<span><a href={0}>上一页</a></span> ", 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={0}>下一页</a></span> ", 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={0}>末页</a></span> ", 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={0}>{1}</a></span> ", 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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  • 原文地址:https://www.cnblogs.com/louby/p/4791937.html
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