NET Core TagHelper实现分页标签(2)

using Microsoft.AspNetCore.Razor.TagHelpers; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Text.Core.Extend { #region 分页扩展 PageExtend /// <summary> /// 分页option属性 /// </summary> public class MoPagerOption { /// <summary> /// 当前页 必传 /// </summary> public int CurrentPage { get; set; } /// <summary> /// 总条数 必传 /// </summary> public int Total { get; set; } /// <summary> /// 分页记录数（每页条数 默认每页15条） /// </summary> public int PageSize { get; set; } /// <summary> /// 路由地址(格式如：/Controller/Action) 默认自动获取 /// </summary> public string RouteUrl { get; set; } /// <summary> /// 样式 默认 bootstrap样式 1 /// </summary> public int StyleNum { get; set; } } /// <summary> /// 分页标签 /// </summary> public class PagerTagHelper : TagHelper { public MoPagerOption PagerOption { get; set; } public override void Process(TagHelperContext context, TagHelperOutput output) { output.TagName = "div"; if (PagerOption.PageSize <= 0) { PagerOption.PageSize = 15; } if (PagerOption.CurrentPage <= 0) { PagerOption.CurrentPage = 1; } if (PagerOption.Total <= 0) { return; } //总页数 var totalPage = PagerOption.Total / PagerOption.PageSize + (PagerOption.Total % PagerOption.PageSize > 0 ? 1 : 0); if (totalPage <= 0) { return; } //当前路由地址 if (string.IsNullOrEmpty(PagerOption.RouteUrl)) { //PagerOption.RouteUrl = helper.ViewContext.HttpContext.Request.RawUrl; if (!string.IsNullOrEmpty(PagerOption.RouteUrl)) { var lastIndex = PagerOption.RouteUrl.LastIndexOf("https://www.jb51.net/"); PagerOption.RouteUrl = PagerOption.RouteUrl.Substring(0, lastIndex); } } PagerOption.RouteUrl = PagerOption.RouteUrl.TrimEnd('https://www.jb51.net/'); //构造分页样式 var sbPage = new StringBuilder(string.Empty); switch (PagerOption.StyleNum) { case 2: { break; } default: { #region 默认样式 sbPage.Append("<nav>"); sbPage.Append(" <ul class=https://www.jb51.net/article/\"pagination\">"); sbPage.AppendFormat(" <li><a href=https://www.jb51.net/article/\"{0}/{1}\" aria-label=https://www.jb51.net/article/\"Previous\"><span aria-hidden=https://www.jb51.net/article/\"true\">&laquo;</span></a></li>", PagerOption.RouteUrl, PagerOption.CurrentPage - 1 <= 0 ? 1 : PagerOption.CurrentPage - 1); for (int i = 1; i <= totalPage; i++) { sbPage.AppendFormat(" <li {1}><a href=https://www.jb51.net/article/\"{2}/{0}\">{0}</a></li>", i, i == PagerOption.CurrentPage ? "class=https://www.jb51.net/article/\"active\"" : "", PagerOption.RouteUrl); } sbPage.Append(" <li>"); sbPage.AppendFormat(" <a href=https://www.jb51.net/article/\"{0}/{1}\" aria-label=https://www.jb51.net/article/\"Next\">", PagerOption.RouteUrl, PagerOption.CurrentPage + 1 > totalPage ? PagerOption.CurrentPage : PagerOption.CurrentPage + 1); sbPage.Append(" <span aria-hidden=https://www.jb51.net/article/\"true\">&raquo;</span>"); sbPage.Append(" </a>"); sbPage.Append(" </li>"); sbPage.Append(" </ul>"); sbPage.Append("</nav>"); #endregion } break; } output.Content.SetHtmlContent(sbPage.ToString()); //output.TagMode = TagMode.SelfClosing; //return base.ProcessAsync(context, output); } } #endregion }

5.效果展示

分页效果：

右键查看浏览器中的html元素：