时间:2021-05-26
本文实例讲述了ASP.Net MVC+Data Table实现分页+排序功能的方法。分享给大家供大家参考,具体如下:
实现思路:
使用datatable内置的分页,排序
使用attribute+反射来控制需要排序和显示的字段以及顺序
分离排序和显示逻辑
若要添加搜索逻辑只需要传递搜索的字段到后端即可(js初始化时把"searching": false拿掉)。
View :
@using BCMS.BusinessLogic@using BCMS.BusinessLogic.Models@model List<BusCaptainObj><table id="tblData" class="table table-striped"> <thead> <tr class="data-list"> <th style="width:10%;">@Html.DisplayNameFor(model => model.First().PersNo)</th> <th style="width:30%;">@Html.DisplayNameFor(model => model.First().Personnel_Name)</th> <th style="width:20%;">@Html.DisplayNameFor(model => model.First().Position)</th> <th style="width:20%;">@Html.DisplayNameFor(model => model.First().Interchange)</th> <th style="width:20%;">Action</th> </tr> </thead></table>@section scripts { <script type="text/javascript"> @{ var columns = DataTableHelper.DisplayColumns<BusCaptainObj>(); } $(document).ready(function () { $('#tblData').dataTable({ "processing": true, "serverSide": true, "searching": false, "stateSave": true, "oLanguage": { "sInfoFiltered": "" }, "ajax": { "url": @Url.Action("GetJsonData"), "type": "GET" }, "columns": [ { "data": "@columns[0]" }, { "data": "@columns[1]" }, { "data": "@columns[2]" }, { "data": "@columns[3]" }, { "data": "@columns[0]", "orderable": false, "searchable": false, "render": function (data, type, full, meta) { if (type === 'display') { return GetDetailButton("/BusCaptain/Detail?bcId=", data) + GetInfoButton("/Telematics?bcId=", data, "Performance"); } else { return data; } } } ], "order": [[0, "asc"]] }); }); </script>}Controller :
public ActionResult GetJsonData(int draw, int start, int length){ string search = Request.QueryString[DataTableQueryString.Searching]; string sortColumn = ""; string sortDirection = "asc"; if (Request.QueryString[DataTableQueryString.OrderingColumn] != null) { sortColumn = GetSortColumn(Request.QueryString[DataTableQueryString.OrderingColumn]); } if (Request.QueryString[DataTableQueryString.OrderingDir] != null) { sortDirection = Request.QueryString[DataTableQueryString.OrderingDir]; } DataTableData dataTableData = new DataTableData(); dataTableData.draw = draw; int recordsFiltered = 0; dataTableData.data = BusCaptainService.Instance.SearchMyBuscaptains(User.Identity.Name, out recordsFiltered, start, length, sortColumn, sortDirection, search).Data; dataTableData.recordsFiltered = recordsFiltered; return Json(dataTableData, JsonRequestBehavior.AllowGet);}public string GetSortColumn(string sortColumnNo){ var name = DataTableHelper.SoringColumnName<BusCaptainObj>(sortColumnNo); return name;}public class DataTableData{ public int draw { get; set; } public int recordsFiltered { get; set; } public List<BusCaptainObj> data { get; set; }}Model :
class XXX{... [DisplayColumn(0)] [SortingColumn(0)] public int? A { get; set; } [DisplayColumn(1)] [SortingColumn(1)] public string B { get; set; }...}Helper class :
public class SortingColumnAttribute : Attribute{ public int Index { get; } public SortingColumnAttribute(int index) { Index = index; }}public class DisplayColumnAttribute : Attribute{ public int Index { get; } public DisplayColumnAttribute(int index) { Index = index; }}public static class DataTableQueryString{ public static string OrderingColumn = "order[0][column]"; public static string OrderingDir = "order[0][dir]"; public static string Searching = "search[value]";}public static class DataTableHelper{ public static IList<string> DisplayColumns<T>() { var result = new Dictionary<int, string>(); var props = typeof(T).GetProperties(); foreach (var propertyInfo in props) { var propAttr = propertyInfo .GetCustomAttributes(false) .OfType<DisplayColumnAttribute>() .FirstOrDefault(); if (propAttr != null) { result.Add(propAttr.Index,propertyInfo.Name); } } return result.OrderBy(x => x.Key).Select(x => x.Value).ToList(); } public static string SoringColumnName<T>(string columnIndex) { int index; if (!int.TryParse(columnIndex, out index)) { throw new ArgumentOutOfRangeException(); } return SoringColumnName<T>(index); } public static string SoringColumnName<T>(int index) { var props = typeof(T).GetProperties(); foreach (var propertyInfo in props) { var propAttr = propertyInfo .GetCustomAttributes(false) .OfType<SortingColumnAttribute>() .FirstOrDefault(); if (propAttr != null && propAttr.Index == index) { return propertyInfo.Name; } } return ""; }}Query:
...var query = context.BusCaptains .Where(x => ...) .OrderByEx(sortDirection, sortField) .Skip(start) .Take(pageSize);...LINQ Helper :
...public static IQueryable<T> OrderByEx<T>(this IQueryable<T> q, string direction, string fieldName) { try { var customProperty = typeof(T).GetCustomAttributes(false).OfType<ColumnAttribute>().FirstOrDefault(); if (customProperty != null) { fieldName = customProperty.Name; } var param = Expression.Parameter(typeof(T), "p"); var prop = Expression.Property(param, fieldName); var exp = Expression.Lambda(prop, param); string method = direction.ToLower() == "asc" ? "OrderBy" : "OrderByDescending"; Type[] types = new Type[] {q.ElementType, exp.Body.Type}; var mce = Expression.Call(typeof(Queryable), method, types, q.Expression, exp); return q.Provider.CreateQuery<T>(mce); } catch (Exception ex) { _log.ErrorFormat("error form OrderByEx."); _log.Error(ex); throw ; } }...更多关于asp.net相关内容感兴趣的读者可查看本站专题:《asp.net优化技巧总结》、《asp.net字符串操作技巧汇总》、《asp.net操作XML技巧总结》、《asp.net文件操作技巧汇总》、《asp.net ajax技巧总结专题》及《asp.net缓存操作技巧总结》。
希望本文所述对大家asp.net程序设计有所帮助。
声明:本页内容来源网络,仅供用户参考;我单位不保证亦不表示资料全面及准确无误,也不保证亦不表示这些资料为最新信息,如因任何原因,本网内容或者用户因倚赖本网内容造成任何损失或损害,我单位将不会负任何法律责任。如涉及版权问题,请提交至online#300.cn邮箱联系删除。
asp.net操作access数据库是常见的数据库操作应用,本文就来实例讲解一下asp.net实现access数据库分页的方法。希望对大家的asp.net程序设
一、ASP.NETMVC的本地化支持ASP.NETMVC的是基于ASP.NET运行,所以由ASP.NET提供的所有功能,都可以在MVC里使用,例如缓存,会话状态
本文实例讲述了asp.net实现简单分页的方法。分享给大家供大家参考。具体实现方法如下:复制代码代码如下://////分页内容//////页面大小///页面数量
本文实例讲述了asp.net实现的MVC跨数据库多表联合动态条件查询功能。分享给大家供大家参考,具体如下:一、控制器中方法[HttpGet]publicActi
一、AspNetPager分页控件分页是Web应用程序中最常用到的功能之一,在ASP.NET中,虽然自带了一个可以分页的DataGrid(asp.net1.1)