using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace FormsApp.Models
{
    public class Product
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public decimal Price { get; set; }
        public bool isApproved { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace FormsApp.Models
{
    public static class ProductRepository
    {
        private static List<Product> _products;

        static ProductRepository()
        {
            _products = new List<Product>()
            {
                new Product(){ Id=1, Name="Product 1", Description="Description 1", Price=10, isApproved=true},
                new Product(){ Id=2, Name="Product 2", Description="Description 2", Price=20, isApproved=false},
                new Product(){ Id=3, Name="Product 3", Description="Description 3", Price=30, isApproved=true},
                new Product(){ Id=4, Name="Product 4", Description="Description 4", Price=120, isApproved=true},
                new Product(){ Id=5, Name="Product 5", Description="Description 5", Price=140, isApproved=false},
                new Product(){ Id=6, Name="Product 6", Description="Description 6", Price=160, isApproved=true},
                new Product(){ Id=7, Name="Product 7", Description="Description 7", Price=132, isApproved=true},
                new Product(){ Id=8, Name="Product 8", Description="Description 8", Price=154, isApproved=false},
                new Product(){ Id=9, Name="Product 9", Description="Description 9", Price=345, isApproved=true},
                new Product(){ Id=10, Name="Product 10", Description="Description 10", Price=100, isApproved=false}
            };
        }

        public static List<Product> Products
        {
            get { return _products; }
        }

        public static void AddProduct(int productLast, string Name, string Description, decimal Price, bool isApproved)
        {
            var item = new Product() { Id = productLast, Name = Name, Description = Description, Price = Price, isApproved = isApproved };
            _products.Add(item);
        }

    }
}

using FormsApp.Models;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;

namespace FormsApp.Controllers
{
    public class HomeController : Controller
    {
        private readonly ILogger<HomeController> _logger;

        public HomeController(ILogger<HomeController> logger)
        {
            _logger = logger;
        }

        public IActionResult Index()
        {
            return View(ProductRepository.Products);
        }

        [HttpGet]
        public IActionResult Create()
        {
            return View();
        }

        [HttpPost]
        public IActionResult Create(string Name, string Description, decimal Price, bool isApproved)
        {
            /*Product product*/
            var productAll = ProductRepository.Products.Last();
            int productLast = productAll.Id+1;
            ProductRepository.AddProduct(productLast,Name,Description,Price,isApproved);
            return RedirectToAction("Index");
        }

        [HttpGet]
        public IActionResult Search(string q)
        {
            //gelen q değeri ile arama işlemleri yapılır.
            if (string.IsNullOrWhiteSpace(q))
            {
                return View();
            }
            else
            {
                return View("Index",ProductRepository.Products.Where(i=>i.Name.Contains(q)));
            }
        }

        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
        }
    }
}