Example: Car Controller with pagination in C# ASP.NET Core

CarWithPaginationController.cs

using AutoMapper;
using Vasconcellos.WebAPI.Entity;
using Vasconcellos.WebAPI.Model;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Vasconcellos.WebAPI.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class CarWithPaginationController : ControllerBase
    {
        private readonly ApplicationDbContext _context;
        private readonly ILogger<CarWithPaginationController> _logger;
        private readonly IMapper _mapper; 
 
        /// <summary>
        /// Returns the car through a Query String
        /// </summary>
        /// <param name="name"></param>
        /// <param name="ageInitial"></param>
        /// <param name="ageFinal"></param>
        /// <param name="description"></param>
        /// <param name="active"></param>
        /// <param name="page"></param>
        /// <param name="rows"></param>
        /// <response code="200">Ok. Curso encontrado</response>
        /// <response code="500">Erro interno do servidor.</response>
        [HttpGet()]
        [ProducesResponseType(typeof(IList<CarModel>), 200)]
        [ProducesResponseType(500)]
        public async Task<ActionResult<IList<CarModel>>> Get (string name, short? ageInitial, short? ageFinal, string description, bool? active, int? page, int? rows )
        {
            IQueryable<Car> query = this._context.Car.AsQueryable();

            if (!string.IsNullOrEmpty(name))
                query = query.Where(x => x.Name.Contains(name, StringComparison.OrdinalIgnoreCase));

            if (ageInitial != null)
                query = query.Where(x => x.Age >= ageInitial);

            if (ageFinal != null)
                query = query.Where(x => x.Age <= ageFinal);

            if (!string.IsNullOrEmpty(description))
                query = query.Where(x => x.Description.Contains(description, StringComparison.OrdinalIgnoreCase));

            if (active != null)
                query = query.Where(x => x.Active == active);
            else
                query = query.Where(x => x.Active);

            IList<Car> entity;
            if (page != null && page > 0 && rows != null && rows > 0)
            {
                entity = query.Skip((int)(rows * (page - 1))).Take((int)rows).ToList();
            }
            else
            {
                entity = query.ToList();
            }

            Request.HttpContext.Response.Headers.Add("Access-Control-Expose-Headers", "X-Total-Count");
            Request.HttpContext.Response.Headers.Add("X-Total-Count", entity.Count().ToString());

            return await Task.FromResult(this.Ok(_mapper.Map<List<CarModel>>(entity)));
        }
    }
}