痛快-分页源码

MVC分页源码

全面兼容Bootstrap

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;

namespace System.Web.Mvc
{
    public static class TKHtml
    {
        public static HtmlString Pager(this HtmlHelper htmlHelper, string url, int currentPage, int pageSize, int totalCount)
        {
            var redirectTo = string.IsNullOrEmpty(url) ? htmlHelper.ViewContext.RequestContext.HttpContext.Request.Url.AbsolutePath : url;
            //每页行数
            pageSize = pageSize == 0 ? 3 : pageSize;
            //当前页
            currentPage = currentPage == 0 ? 1 : currentPage;
            //总页数
            var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1);
            var output = new StringBuilder();
            if (totalPages > 1)
            {
                output.AppendFormat("<li><a href='{0}'>首页</a></li> ", redirectTo);
                if (currentPage > 1)
                {
                    if (currentPage - 1 == 1)
                    {
                        output.AppendFormat("<li><a href='{0}'>上一页</a></li> ", redirectTo);
                    }
                    else
                    {
                        output.AppendFormat("<li><a href='{0}_{1}'>上一页</a></li> ", redirectTo, currentPage - 1);
                    }
                }

                output.Append(" ");
                int currint = 5;
                //一共最多显示10个页码，前面5个，后面5个
                for (int i = 0; i <= 10; i++)
                {
                    if ((currentPage + i - currint) >= 1 && (currentPage + i - currint) <= totalPages)
                    {
                        //当前页处理 
                        if (currint == i)
                        {
                            output.AppendFormat("<li class='active'><a>{0}<span class='sr-only'>(current)</span></a></li> ", currentPage);
                        }
                        //一般页处理
                        else
                        {
                            if (currentPage + i - currint == 1)
                            {
                                output.AppendFormat("<li><a href='{0}'>{1}</a></li> ", redirectTo, currentPage + i - currint);
                            }
                            else
                            {
                                output.AppendFormat("<li><a href='{0}_{1}'>{2}</a></li> ", redirectTo, currentPage + i - currint, currentPage + i - currint);
                            }
                        }
                    }
                    output.Append(" ");
                }
                //处理下一页的链接
                if (currentPage < totalPages)
                {
                    output.AppendFormat("<li><a href='{0}_{1}'>下一页</a></li> ", redirectTo, currentPage + 1);
                }

                output.Append(" ");
                if (currentPage != totalPages)
                {
                    output.AppendFormat("<li><a href='{0}_{1}'>末页</a></li> ", redirectTo, totalPages);
                }
                output.Append(" ");
            }
            //统计
            output.AppendFormat("<li class='disabled'><a>第{0}页 / 共{1}页</a></li>", currentPage, totalPages);

            return new HtmlString(output.ToString());
        }
    }
}