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kendo ui grid filter, sort and paging in the server


Kendo UI Grid code-sample

@(Html.Kendo().Grid<Entities.Model.Proc_GetOrders_Result>()
.Name("GridOrders")
.Columns(columns =>
{
    columns.Bound(p => p.Order).Title("Order Detail").Filterable(true);
    columns.Bound(p => p.Customer).Title("Customer Detail").Filterable(true);
    columns.Bound(p => p.ID).Title("").Filterable(false).Title("Actions").Sortable(false);
})
.ClientRowTemplate(Html.Partial("_tabs").ToHtmlString())                                                                            
.DataSource(ds => ds
    .Ajax()
    .Sort(srt => srt.Add(e => e.ID).Descending())
    .Read(read => read.Action("GetOrders", "Orders"))
    .PageSize(PageSize)
)
.Events(e => e.DataBound("onDataBoundOrders"))
.Pageable()
.Sortable()
.Resizable(e => e.Columns(true))
    .Pageable(pager => pager
        .Refresh(true)
    )
.Filterable(filterable => filterable
    .Extra(false)
    .Operators(operators => operators
        .ForString(str => str.Clear()
            .StartsWith("Starts with")
            .EndsWith("Ends with")
            .Contains("Contains")
            .DoesNotContain("Not contains")
            )
        )
    )
)

Controller Action code-sample

        /// <summary>
        /// BELOW METHOD IS USED TO GET ORDERS
        /// </summary>
        public ActionResult GetOrders([DataSourceRequest] DataSourceRequest request, KendoCustomFilterCollection kendoCustomFilterCollection)
        {
            // We are not fetching the complete DataSet from DB as kendo grid do, but now we are requesting records based on PageIndex and PageSize.
            Tuple<int, List<Proc_GetOrders_Result>> orders = _repoOrder.GetOrders(request, kendoCustomFilterCollection);

            // Overriding request.Page property to 1.
            // Because now we are fetching records for single page only which contains records equals to page size which is by default 10.
            request.Page = 1;
            request.Filters = null;// filter Client Row Template.
            var result = orders.Item2.ToDataSourceResult(request);
            if (orders.Item1 > 0)
            {
                result.Total = orders.Item1;
            }
            return Json(result);
        }


        /// <summary>
        /// BELOW METHOD IS USED TO GET ORDERS FOR KENDO UI GRID
        /// </summary>
        public Tuple<int, List<Proc_GetOrders_Result>> GetOrders(Kendo.Mvc.UI.DataSourceRequest request, KendoCustomFilterCollection kendoCustomFilterCollection)
        {
            #region FILTERATION RELATED CODE

            List<Kendo.Mvc.FilterDescriptor> lFilters = new List<Kendo.Mvc.FilterDescriptor>();
            Expression<Func<Proc_GetOrders_Result, bool>> lambda = null;
            List<Expression<Func<Proc_GetOrders_Result, bool>>> lExpressions = new List<Expression<Func<Proc_GetOrders_Result, bool>>>();

            if (request.Filters != null && request.Filters.Count > 0)
            {
                //GET "FILTERDESCRIPTOR" AT RUNTIME
                lFilters = new Helper().GetFilterDescriptors(request.Filters);

                if (kendoCustomFilterCollection.Values != null)
                {
                    // FOR MULTIPLE FILTERS PER COLUMN
                    lExpressions = new Helper().CreateExpressions<Proc_GetOrders_Result, bool>(lExpressions, lFilters, kendoCustomFilterCollection);
                }
                else
                {
                    // FOR SINGLE FILTER PER COLUMN
                    lExpressions.Add(ExpressionBuilder.GetExpression<Proc_GetOrders_Result>(lFilters, "AND"));
                }

                //MERGE ALL EXPRESSIONS
                lambda = new Helper().MergeAllExpressions<Proc_GetOrders_Result, bool>(lExpressions);
            }

            #endregion

            //GET LIST
            Tuple<int, List<Proc_GetOrders_Result>> mylist = new Tuple<int, List<Proc_GetOrders_Result>>
                (base.Context.Proc_GetOrders().AsQueryable()
                .Where(lambda == null ? e => e.OrderID == e.OrderID : lambda)
                .Count(),
                base.Context.Proc_GetOrders().AsQueryable()
                .Where(lambda == null ? e => e.OrderID == e.OrderID : lambda)
                .Skip((request.Page - 1) * request.PageSize)
                .Take(request.PageSize)
                .ToList());

            return mylist;
        }

For the helpers class click on link

Not : if you want full code then contact me.

By Anil Singh | Rating of this article (*****)

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