ASP.Net MVC+Data Table实现分页+排序功能的方法_实用技巧_

 @using BCMS.BusinessLogic @using BCMS.BusinessLogic.Models @model List
@Html.DisplayNameFor(model => model.First().PersNo)
@Html.DisplayNameFor(model => model.First().Personnel_Name)
@Html.DisplayNameFor(model => model.First().Position)
@Html.DisplayNameFor(model => model.First().Interchange)
Action
 @section scripts {  } 

 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(sortColumnNo); return name; } public class DataTableData { public int draw { get; set; } public int recordsFiltered { get; set; } public List data { get; set; } } 

 class XXX{ ... [DisplayColumn(0)] [SortingColumn(0)] public int? A { get; set; } [DisplayColumn(1)] [SortingColumn(1)] public string B { get; set; } ... } 

 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 DisplayColumns() { var result = new Dictionary(); var props = typeof(T).GetProperties(); foreach (var propertyInfo in props) { var propAttr = propertyInfo .GetCustomAttributes(false) .OfType() .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(string columnIndex) { int index; if (!int.TryParse(columnIndex, out index)) { throw new ArgumentOutOfRangeException(); } return SoringColumnName(index); } public static string SoringColumnName(int index) { var props = typeof(T).GetProperties(); foreach (var propertyInfo in props) { var propAttr = propertyInfo .GetCustomAttributes(false) .OfType() .FirstOrDefault(); if (propAttr != null && propAttr.Index == index) { return propertyInfo.Name; } } return ""; } } 

 ... var query = context.BusCaptains .Where(x => ...) .OrderByEx(sortDirection, sortField) .Skip(start) .Take(pageSize); ... 

 ... public static IQueryable OrderByEx(this IQueryable q, string direction, string fieldName) { try { var customProperty = typeof(T).GetCustomAttributes(false).OfType().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(mce); } catch (Exception ex) { _log.ErrorFormat("error form OrderByEx."); _log.Error(ex); throw ; } } ...