file upload

api/ProductsController.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using System.Web.Http;
+
+
+namespace api
+{
+    public class ProductsController : ApiController
+    {
+
+        Product[] products = new Product[]
+        {
+            new Product { Id = 1, Name = "Tomato Soup", Category = "Groceries", Price = 1 },
+            new Product { Id = 2, Name = "Yo-yo", Category = "Toys", Price = 3.75M },
+            new Product { Id = 3, Name = "Hammer", Category = "Hardware", Price = 16.99M }
+        };
+        public IEnumerable<Product> GetAllProducts()
+        {
+            return products;
+        }
+
+        public Product GetProductById(int id)
+        {
+            var product = products.FirstOrDefault((p) => p.Id == id);
+            if (product == null)
+            {
+                throw new HttpResponseException(HttpStatusCode.NotFound);
+            }
+            return product;
+        }
+
+        public IEnumerable<Product> GetProductsByCategory(string category)
+        {
+            return products.Where(
+                (p) => string.Equals(p.Category, category,
+                StringComparison.OrdinalIgnoreCase));
+
+        }
+
+    }
+}