.netCore MVC条件分页

直白点，呈上香喷喷的代码，创建AspNetCoreMvcPager类

 public static class PagedList<T>
    {
        public static Tuple<List<T>, PagerModel> PageList(int pageindex, int pagesize, List<T> list)
        {
            int count = list.Count();
            int num = (count % pagesize == 0) ? (count / pagesize) : (count / pagesize + 1);
            List<T> list2 = Enumerable.ToList<T>(Enumerable.Take<T>(Enumerable.Skip<T>(list, (pageindex - 1) * pagesize), pagesize));
            PagerModel pagerModel = new PagerModel();
            pagerModel.pageIndex = pageindex;
            pagerModel.pageCount = num;
            pagerModel.Count = count;
            pagerModel.pageStart = ((pageindex - 2 > 0) ? (pageindex - 2) : 1);
            pagerModel.pageEnd = ((pageindex + 2 >= num) ? num : (pagerModel.pageStart + 4));
            return new Tuple<List<T>, PagerModel>(list2, pagerModel);
        }
    }

    public static class PagerHtmlString
    {
        public static IHtmlContent Pager(PagerModel model, string controllerName, string actionName, bool Total)
        {
            StringBuilder stringBuilder = new StringBuilder();

            stringBuilder.Append(string.Concat(new object[]
            {
                "<a class='page_first nopage' href=\"/",
                controllerName,
                "/",
                actionName,
                "?pageindex=",
                1,
                "\">首页</a>"
            }));
            stringBuilder.Append(string.Concat(new object[]
            {
                "<a class='prev nopage' href=\"/",
                controllerName,
                "/",
                actionName,
                "?pageindex=",
                (model.pageIndex == 1) ? 1 : (model.pageIndex - 1),
                "\">上一页</a>"
            }));
            //stringBuilder.Append("</li>");
            for (int i = model.pageStart; i <= model.pageEnd; i++)
            {
                //stringBuilder.Append("<li class=" + ((model.pageIndex == i) ? "active" : "") + ">");
                if (model.pageIndex == i)
                {
                    stringBuilder.Append(string.Concat(new object[]
                   {
                    "<span style='margin-left:4px; ' class='current " + ((model.pageIndex == i) ? "cur" : "")+"' 'href=\"/'",
                    controllerName,
                    "/",
                    actionName,
                    "?pageindex=",
                    i,
                    "\">",
                    ""+i+"" +
                    "</span>"
                    }));
                }
                else
                {
                    stringBuilder.Append(string.Concat(new object[]
                    {
                    "<a  style='margin-left:4px; ' href=\"/",
                    controllerName,
                    "/",
                    actionName,
                    "?pageindex=",
                    i,
                    "\">",
                    ""+i+"" +
                    "</a>"
                     }));
                 }
            }
            stringBuilder.Append(string.Concat(new object[]
            {
                "<a class='next' style='margin-left:4px; ' href=\"/",
                controllerName,
                "/",
                actionName,
                "?pageindex=",
                (model.pageIndex == model.pageCount) ? model.pageCount : (model.pageIndex + 1),
                "\">下一页</a>"
            }));
            stringBuilder.Append(string.Concat(new object[]
            {
                "<a class='page_last' style='margin-left:4px; ' href=\"/",
                controllerName,
                "/",
                actionName,
                "?pageindex=",
                model.pageCount,
                "\">尾页</a>"
            }));
            bool flag = model.Count > 0;
            IHtmlContent result;
            if (flag)
            {
                result = new HtmlString(stringBuilder.ToString());
            }
            else
            {
                result = new HtmlString("");
            }
            return result;
        }
        public static IHtmlContent PagerSearch(PagerModel model, string controllerName, string actionName,  bool Total)
        {
            StringBuilder stringBuilder = new StringBuilder();
            string strSearch = "";
            if (model.search.SerachName!="")
            {
                strSearch = strSearch + "&SearchName=" + model.search.SerachName;
            }
            if (model.search.rdata != "")
            {
                strSearch = strSearch + "&rdata=" + model.search.rdata;
            }
            if (model.search.sporttype >0)
            {
                strSearch = strSearch + "&sporttype=" + model.search.sporttype;
            }
            if (model.search.FileType >0)
            {
                strSearch = strSearch + "&FileType=" + model.search.FileType;
            }
            if (model.search.SubType>0)
            {
                strSearch = strSearch + "&SubType=" + model.search.SubType;
            }
            stringBuilder.Append(string.Concat(new object[]
            {
                "<a class='page_first nopage' href=\"/",
                controllerName,
                "/",
                actionName,
                "?pageindex=",
                1,strSearch,
                "\">首页</a>"
            }));

            stringBuilder.Append(string.Concat(new object[]
            {
                "<a class='prev nopage' href=\"/",
                controllerName,
                "/",
                actionName,
                "?pageindex=",
                (model.pageIndex == 1) ? 1 : (model.pageIndex - 1),strSearch,
                "\">上一页</a>"
            }));

            for (int i = model.pageStart; i <= model.pageEnd; i++)
            {
                if (model.pageIndex == i)
                {
                    stringBuilder.Append(string.Concat(new object[]
                   {
                    "<span style='margin-left:4px; ' class='current " + ((model.pageIndex == i) ? "cur" : "")+"' 'href=\"/'",
                    controllerName,
                    "/",
                    actionName,
                    "?pageindex=",
                    i,strSearch,
                    "\">",
                    ""+i+"" +
                    "</span>"
                    }));
                }
                else
                {
                    stringBuilder.Append(string.Concat(new object[]
                   {
                    "<a  style='margin-left:4px; ' href=\"/",
                    controllerName,
                    "/",
                    actionName,
                    "?pageindex=",
                    i,strSearch,
                    "\">",
                    ""+i+"" +
                    "</a>"
                     }));
                  }
            }
            stringBuilder.Append(string.Concat(new object[]
            {
                "<a class='next' style='margin-left:4px; ' href=\"/",
                controllerName,
                "/",
                actionName,
                "?pageindex=",
                (model.pageIndex == model.pageCount) ? model.pageCount : (model.pageIndex + 1),strSearch,
                "\">下一页</a>"
            }));

            stringBuilder.Append(string.Concat(new object[]
            {
                "<a class='page_last' style='margin-left:4px; ' href=\"/",
                controllerName,
                "/",
                actionName,
                "?pageindex=",
                model.pageCount,strSearch,
                "\">尾页</a>"
            }));
            bool flag = model.Count > 0;
            IHtmlContent result;
            if (flag)
            {
                result = new HtmlString(stringBuilder.ToString());
            }
            else
            {
                result = new HtmlString("");
            }
            return result;
        }
    }
       
    public class PagerModel
    {
        public int pageIndex
        {
            get;
            set;
        }

        public int pageCount
        {
            get;
            set;
        }

        public int Count
        {
            get;
            set;
        }

        public int pageStart
        {
            get;
            set;
        }

        public int pageEnd
        {
            get;
            set;
        }
        public SearchInput search
        {
            get;set;
        }
    }
    //条件类型
    public class SearchInput
    {
        //搜索
        public string SerachName { get; set; }
        //日期
        public string rdata { get; set; }
        //文件类型ID
        public int FileType { get; set; }
        //运动类型ID
        public int sporttype { get; set; }
        //子类ID
        public int SubType { get; set; }
    }

View Code

创建完分页类后，直接在 Controller中使用,如下

        using AspNetCoreMvcPager;//引用
        /// <summary>
        /// 活动列表
        /// </summary>
        /// <returns></returns>
        public async Task<IActionResult> StudentList(string SearchName = "",int PageIndex = 1)
        {
            SearchDto search = new SearchDto()
            {
                PageIndex = PageIndex,//当前页
                Pagesize = 10，//分页数
            };
            //获取数据
            var tactivitiesList = await _tactivitiesManager.GettactivityList();
            var pagedList = PagedList<StudentModel>.PageList(search.PageIndex, search.Pagesize, tactivitiesList);
            //组装参数
              pagedList.Item2.pageIndex = pageindex;
              SearchInput input = new SearchInput()
              {
                SerachName = SearchName
              };
              pagedList.Item2.search = input;
              ViewBag.model = pagedList.Item2;

            return View(pagedList.Item1);
        }

View Code

在页面代码如下

@using AspNetCoreMvcPager;
 <div class="turnpage">
     @Html.Raw(PagerHtmlString.Pager(ViewBag.model, "Activities", "ActivityList", true))
</div>

执行效果图(需要自己写css样式进行控制):