Grid control basic features

<div class="bar">
    @Html.Awe().TextBox(new TextBoxOpt{ Name = "txtPerson", Placeholder = "search for person ...", CssClass = "searchtxt", ClearBtn = true })
    @Html.Awe().TextBox(new TextBoxOpt{ Name = "txtFood", Placeholder = "search for food ...", CssClass = "searchtxt", ClearBtn = true })        
    @(Html.Awe().DropdownList(
        new DropdownListOpt
    {
        Name = "selCountry",
        Url = Url.Action("GetCountries", "Data"),
        ClearBtn = true
    }))
</div>

@(Html.Awe().Grid("Grid1")
    .Mod(o => o.Main())
    .Columns(
    new Column { Bind = "Id", Width = 75, Groupable = false, Resizable = false },
    new Column { Bind = "Person" },
    new Column { Bind = "Food.Name", ClientFormatFunc = "site.imgFood", MinWidth = 200 },
    new Column { Bind = "Country.Name", Header = "Country" },
    new Column { Bind = "Date", Grow = .1 }.Mod(o => o.Autohide()),
    new Column { Bind = "Location" }.Mod(o => o.Autohide()),
    new Column { Bind = "Chef.FirstName,Chef.LastName", Prop = "ChefName", Header = "Chef" })
    .Url(Url.Action("GetItems", "LunchGrid"))
    .Height(350)
    .Reorderable()
    .Resizable()
    .Persistence(Persistence.Session)
    .Parent("txtPerson", "person")
    .Parent("txtFood", "food")
    .Parent("selCountry", "country"))

public class LunchGridController : Controller
{
    public IActionResult GetItems(GridParams g, int? country, string person, string food)
    {            
        var query = Db.Lunches.AsQueryable();

        // filtering
        if (person != null) query = query.Where(o => o.Person.ToLower().Contains(person.ToLower()));
        if (food != null) query = query.Where(o => o.Food.Name.ToLower().Contains(food.ToLower()));
        if (country.HasValue) query = query.Where(o => o.Country.Id == country);

        // data can be from any source as long here you pass an IQueryable<T>
        var gmb = new GridModelBuilder<Lunch>(query.AsQueryable(), g);

        // define grid key, used to identify rows
        gmb.KeyProp = o => o.Id;

        // grid row model
        // columns bound to Prop1.Prop2 will automatically display Prop1Prop2,
        // or you could specify in the view Column.Prop ="Prop1Prop2", or ClientFormat = ".(Prop1Prop2)"
        gmb.Map = o => new
        {
            o.Id,
            o.Person,
            FoodName = o.Food.Name,
            FoodPic = o.Food.Pic,
            o.Location,
            o.Price,
            Date = o.Date.ToShortDateString(),
            CountryName = o.Country.Name,
            ChefName = o.Chef.FullName
        };

        return Json(gmb.Build());
    }

    public IActionResult GetItemsEFExample(GridParams g, int? country, string person, string food)
    {
        var query = Db.Lunches.AsQueryable();

        // Filter - custom extension in demo code
        // equivalent to .Where(o => o.Food.Name.Contains(food) || ...)

        query = query
            .Filter(food, o => o.Food.Name)
            .Filter(person, o => o.Person);

        if (country.HasValue) query = query.Where(o => o.Country.Id == country);

        var gmb = new GridModelBuilder<Lunch>(query, g);
        gmb.KeyProp = o => o.Id;
        gmb.Map = o => new
        {
            o.Id,
            o.Person,
            FoodName = o.Food.Name,
            FoodPic = o.Food.Pic,
            o.Location,
            o.Price,
            Date = o.Date.ToShortDateString(),
            CountryName = o.Country.Name,
            ChefName = o.Chef.FullName
        };

        return Json(gmb.Build());
    }
}