首先看下效果
这个分页控件不是很完美，体现下思路就行了，有兴趣的可以自己完善，我把代码贴出来，在这边文章中已有一些介绍
代码
public class UosoPagerTagHelper : TagHelper ???{ ???????public UosoPagerOption UosoPagerOption { get; set; } ???????public override void Process(TagHelperContext context, TagHelperOutput output) ???????{ ???????????output.TagName = "div"; ???????????if (UosoPagerOption.CountNum < 1) ???????????{ ???????????????UosoPagerOption.CountNum = 5; ???????????} ???????????if (UosoPagerOption.PageIndex < 1) ???????????{ ???????????????UosoPagerOption.PageIndex = 1; ???????????} ???????????if (UosoPagerOption.PageIndex > UosoPagerOption.TotalPage) ???????????{ ???????????????UosoPagerOption.PageIndex = UosoPagerOption.TotalPage; ???????????} ???????????if (UosoPagerOption.TotalPage < 1) ???????????{ ???????????????return; ???????????} ???????????var queryarr = UosoPagerOption.Query.Where(c => c.Key != "pageindex" && c.Key != "pagesize").ToList(); ???????????string queryurl = string.Empty; ???????????foreach (var item in queryarr) ???????????{ ???????????????queryurl += "&" + item.Key + "=" + item.Value; ???????????} ???????????output.Content.AppendFormat("<a class=\"prev\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">首页</a>", UosoPagerOption.Url, 1, UosoPagerOption.PageSize, queryurl); ???????????if (UosoPagerOption.PageIndex == 1) ???????????{ ???????????????output.Content.AppendFormat("<a class=\"prev\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">上一页</a>", UosoPagerOption.Url, 1, UosoPagerOption.PageSize, queryurl); ???????????} ???????????else { ???????????????output.Content.AppendFormat("<a class=\"prev\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">上一页</a>", UosoPagerOption.Url, UosoPagerOption.PageIndex - 1, UosoPagerOption.PageSize, queryurl); ???????????} ?????????????????????????????????????#region 分页逻辑 ???????????if (UosoPagerOption.PageIndex == 1) ???????????{ ???????????????for (int i = UosoPagerOption.PageIndex; i <= UosoPagerOption.PageIndex + UosoPagerOption.CountNum - 1; i++) ???????????????{ ???????????????????if (i <= UosoPagerOption.TotalPage) ???????????????????{ ???????????????????????if (UosoPagerOption.PageIndex == i) ???????????????????????{ ???????????????????????????output.Content.AppendFormat("<span class=\"current\">{0}</span>", i); ???????????????????????} ???????????????????????else ???????????????????????{ ???????????????????????????output.Content.AppendFormat("<a class=\"num\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">{1}</a>", UosoPagerOption.Url, i, UosoPagerOption.PageSize, queryurl); ???????????????????????} ???????????????????} ???????????????} ???????????} ???????????else if (UosoPagerOption.PageIndex % UosoPagerOption.CountNum == 0) ???????????{ ??????????????????????????????for (int i = UosoPagerOption.PageIndex - (UosoPagerOption.CountNum / 2); i <= UosoPagerOption.PageIndex + UosoPagerOption.CountNum / 2; i++) ???????????????{ ???????????????????if (i <= UosoPagerOption.TotalPage) ???????????????????{ ???????????????????????if (UosoPagerOption.PageIndex == i) ???????????????????????{ ???????????????????????????output.Content.AppendFormat("<span class=\"current\">{0}</span>", i); ???????????????????????} ???????????????????????else ???????????????????????{ ???????????????????????????output.Content.AppendFormat("<a class=\"num\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">{1}</a>", UosoPagerOption.Url, i, UosoPagerOption.PageSize, queryurl); ???????????????????????} ???????????????????} ???????????????} ???????????} ???????????else ???????????{ ?????????????????????????????int startindex = UosoPagerOption.CountNum * (UosoPagerOption.PageIndex / UosoPagerOption.CountNum) + 1; ???????????????for (int i = startindex; i <= startindex + UosoPagerOption.CountNum - 1; i++) ???????????????{ ???????????????????if (i <= UosoPagerOption.TotalPage) ???????????????????{ ???????????????????????if (UosoPagerOption.PageIndex == i) ???????????????????????{ ???????????????????????????output.Content.AppendFormat("<span class=\"current\">{0}</span>", i); ???????????????????????} ???????????????????????else ???????????????????????{ ???????????????????????????output.Content.AppendFormat("<a class=\"num\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">{1}</a>", UosoPagerOption.Url, i, UosoPagerOption.PageSize, queryurl); ???????????????????????} ???????????????????} ???????????????} ??????????????????????????} ???????????#endregion ???????????if (UosoPagerOption.PageIndex == UosoPagerOption.TotalPage) ???????????{ ???????????????output.Content.AppendFormat("<a class=\"next\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">下一页</a>", UosoPagerOption.Url, UosoPagerOption.TotalPage, UosoPagerOption.PageSize, queryurl); ???????????} ???????????else ???????????{ ???????????????output.Content.AppendFormat("<a class=\"next\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">下一页</a>", UosoPagerOption.Url, UosoPagerOption.PageIndex + 1, UosoPagerOption.PageSize, queryurl); ???????????} ???????????output.Content.AppendFormat("<a class=\"next\" href=\"{0}?pageindex={1}&pagesize={2}{3}\">尾页</a>", UosoPagerOption.Url, UosoPagerOption.TotalPage, UosoPagerOption.PageSize, queryurl); ???????????output.Content.AppendHtml("<div class=\"checkPageSize layui-form\">" + ???????????????"<select name=\"pageIndexSelect\" lay-filter=\"pageSelect\" lay-verify=\"required\" class=\"pageIndexSelect\" >" + ???????????????"<option value=\"5\" selected=\"selected\">每页5条记录</option >" + ???????????????"<option value=\"10\" >每页10条记录</option>" + ???????????????"<option value=\"20\" > 每页20条记录</option>" + ???????????????"<option value=\"50\" > 每页50条记录</option>" + ???????????????"<option value= \"100\"> 每页100条记录</option>" + ???????????????"</select></div>"); ???????????output.Content.AppendHtml("<label>跳转至 </label><input type=\"number\" autocomplete=\"of\" placeholder=\"只能输入数字\" id=\"goToPageIndex\"/><label> 页 </label><input type=\"button\" class=\"btn-default\" value=\"确定\" id=\"goBtn\"/> "); ??????????base.Process(context, output); ???????} ???} ??public class UosoPagerOption ???{ ???????public int PageIndex { get; set; } ???????public int PageSize { get; set; } ???????public int CountNum { get; set; } ???????public int ItemCount { get; set; } ???????public int TotalPage ???????{ ???????????get ???????????{ ???????????????return ItemCount % PageSize > 0 ? (ItemCount / PageSize + 1) : ItemCount / PageSize; ???????????} ???????} ???????public string Url { get; set; } ???????public IQueryCollection Query { get; set; } ???}用法
1、首先在自己项目中添加对应namespace 可以加到_ViewImports.cshtml中
@addTagHelper namespace.UosoPagerTagHelper, namespace
2、在Action 中列表代码中添加
ViewBag.Option = new UosoPagerOption() ???????????{ ???????????????ItemCount = 数据总条数, ???????????????PageSize = 每页显示多少条, ???????????????PageIndex = 当前第几页, ???????????????CountNum = 页码显示个数, ???????????????Url = Request.Path.Value, ???????????????Query = Request.Query ???????????};3、在页面上我们添加
<uoso-pager uoso-pager-option="@ViewBag.Option"></uoso-pager>
4、添加JS引用，这里可以根据自己的需求来写，我贴下，这里前端是用LayUI处理
layui.use(‘form‘, function () { ???//各种基于事件的操作，下面会有进一步介绍 ???var form = layui.form; ???var url = ""; ???form.on(‘select(pageSelect)‘, function (data) { ???????url = document.location.pathname.toString(); ???????url = url + "?pageindex=1&pagesize=" + data.value; ???????url = decodeURIComponent(url); ???????window.location.href = url; ???}); ???var pagesize = GetQueryString("pagesize"); ???if (pagesize != null) { ???????$("select[name=‘pageIndexSelect‘]").val(pagesize); ???????form.render(‘select‘); ???} ???$("input[id=‘goToPageIndex‘]").keypress(function () { ???????return (/[\d]/.test(String.fromCharCode(event.keyCode))); ???}); ???$("#goBtn").click(function () { ???????var pageIndex = $("#goToPageIndex").val(); ???????if (pageIndex == null || pageIndex.toString() == ‘‘ || pageIndex == undefined) { ???????????layer.msg(‘页数不能为空‘); ???????????pageIndex = 0; ???????} else if (pageIndex < 1) { ???????????layer.msg(‘页数不能小于1‘) ???????????pageIndex = 1; ???????} else { ???????????url = document.location.pathname.toString(); ???????????url = url + "?pageindex=" + pageIndex + "&pagesize=" + pagesize; ???????????window.location.href = url; ???????} ??????????})});function GetQueryString(name) { ???var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); ???var r = window.location.search.substr(1).match(reg); ???if (r != null) return unescape(r[2]); return null;}大概的思路就是这样子，代码仅供参考~
.NetCore 中如何实现分页以及编写一个URL分页
原文地址：https://www.cnblogs.com/liyouming/p/9586012.html