mvc.net分页查询案例——PagerExtension

来源：互联网发布：防范网络诈骗标语编辑：程序博客网时间：2024/06/05 18:35
PagerExtension：
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Web.Mvc.Html;using System.Web.Routing;namespace System.Web.Mvc{    public static class PagerExtension    {        public static string Pager<T>(this HtmlHelper html, PagedList<T> data)        {            //数字导航的开始数字            int start = (data.PageIndex - 5) >= 1 ? (data.PageIndex - 5) : 1;            //数字导航的结束数字            int end = (data.TotalPages - start) > 10 ? start + 10 : data.TotalPages;            //路由数据            RouteValueDictionary vs = html.ViewContext.RouteData.Values;            //URL数据            var queryString = html.ViewContext.HttpContext.Request.QueryString;            //合并URL数据            foreach (string key in queryString.Keys)                if (queryString[key] != null && !string.IsNullOrEmpty(key))                    vs[key] = queryString[key];            //合并表单数据            var FormString = html.ViewContext.HttpContext.Request.Form;            foreach (string key in FormString.Keys)                vs[key] = FormString[key];            //输出分页Html            var builder = new StringBuilder();            builder.AppendFormat("<div class=\"mvc_pager\">");            //显示首页和上页            if (data.HasPreviousPage)            {                vs["pageIndex"] = 1;                builder.Append(LinkExtensions.ActionLink(html, "首页", vs["action"].ToString(), vs));                vs["pageIndex"] = data.PageIndex - 1;                builder.Append(LinkExtensions.ActionLink(html, "上页", vs["action"].ToString(), vs));            }            //显示数字页码            for (int i = start; i <= end; i++)            {                vs["pageIndex"] = i;                if (i == data.PageIndex)                {                    builder.Append("<font class='thispagethis'>" + i.ToString() + "</font>");                }                else                {                    builder.Append(LinkExtensions.ActionLink(html, i.ToString(), vs["action"].ToString(), vs));                }            }            //显示下页和末页            if (data.HasNextPage)            {                vs["pageIndex"] = data.PageIndex + 1;                builder.Append(LinkExtensions.ActionLink(html, "下页", vs["action"].ToString(), vs));                vs["pageIndex"] = data.TotalPages;                builder.Append(LinkExtensions.ActionLink(html, "末页", vs["action"].ToString(), vs));            }            builder.Append("共" + data.TotalCount + "条 第" + data.PageIndex + "页/共" + data.TotalPages + "页 </div>");            return builder.ToString();        }    }}
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