This package provides bridge between jqGrid (framework for creating java script dynamic tables) and ASP.NET WebApi server-side code. It emulates the set of the OData provider actions like filtering/sorting/ordering. The WebApi Controller receives filtering/sorting/ordering data from the client side and transparently appends it to LINQ-to-Entities query.

This project is inspired by Ilya Builuk's project: http://www.codeproject.com/Articles/58357/Using-jqGrid-s-search-toolbar-with-multiple-filter It allows both ODataQueryOptions/PageResult style as well as EnableQueryAttribute styles.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;

namespace jqGridExtension
{
    public class jqGridSampleController : ApiController
    {
        DevEntitiesContext dbcontext = new DevEntitiesContext();

        [HttpPost]
        public GridModel GetGridData(GridSettings grid)
        {
            var checks = dbcontext.Check.Select(x => x.client_id).Distinct().ToList();
            var deals = dbcontext.Deal.Select(x => x.client_id).Distinct().ToList();
            var model = dbcontext.Client
                    .Join(dbcontext.ClientStatus, a => a.status, b => b.Id, (a, b) => new { client = a, status = b })
                    .Join(dbcontext.ClientType, a => a.client.cltype, b => b.Id, (a, b) => new { client = a.client, status = a.status, type = b })
                    .Select(x => new
                    {
                        id = x.client.Id,
                        status = x.status,
                        cltype = x.type,
                        firstname = x.client.firstname,
                        lastname = x.client.lastname,
                        phone_cell = x.client.phone_cell,
                        ssn = x.client.ssn,
                        addr_city = x.client.addr_city,
                        addr_street = x.client.addr_street,
                        addr_home = x.client.addr_home,
                        deal_exists = deals.Contains(x.client.Id),
                        check_exists = checks.Contains(x.client.Id)
                    });
                    
            var  userdata = new { key = "value" };

            return jqGridHelper.ApplyJqGridFilters(model, grid, userdata);
        }
        
        [HttpPost]
        [JQGridQueryable]
        public IQueryable GetGridData2()
        {
            var checks = dbcontext.Check.Select(x => x.client_id).Distinct().ToList();
            var deals = dbcontext.Deal.Select(x => x.client_id).Distinct().ToList();
            var model = dbcontext.Client
                    .Join(dbcontext.ClientStatus, a => a.status, b => b.Id, (a, b) => new { client = a, status = b })
                    .Join(dbcontext.ClientType, a => a.client.cltype, b => b.Id, (a, b) => new { client = a.client, status = a.status, type = b })
                    .Select(x => new
                    {
                        id = x.client.Id,
                        status = x.status,
                        cltype = x.type,
                        firstname = x.client.firstname,
                        lastname = x.client.lastname,
                        phone_cell = x.client.phone_cell,
                        ssn = x.client.ssn,
                        addr_city = x.client.addr_city,
                        addr_street = x.client.addr_street,
                        addr_home = x.client.addr_home,
                        deal_exists = deals.Contains(x.client.Id),
                        check_exists = checks.Contains(x.client.Id)
                    });
                    
            return model;
        }
    }
}
```