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 :
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@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 :
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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 :
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class XXX{... [DisplayColumn(0)] [SortingColumn(0)] public int? A { get; set; } [DisplayColumn(1)] [SortingColumn(1)] public string B { get; set; }...} |
Helper class :
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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：
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...var query = context.BusCaptains .Where(x => ...) .OrderByEx(sortDirection, sortField) .Skip(start) .Take(pageSize);... |
LINQ Helper :
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...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 ; } }... |
希望本文所述对大家asp.net程序设计有所帮助。
