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using System;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
namespace HttpClientSample
{
class Program
{
static HttpClient client = new HttpClient();
static void ShowProduct(Product product)
{
Console.WriteLine($"Name: {product.Name}\tPrice: {product.Price}\tCategory: {product.Category}");
}
static async Task<Uri> CreateProductAsync(Product product)
{
HttpResponseMessage response = await client.PostAsJsonAsync("api/products", product);
response.EnsureSuccessStatusCode();
// return URI of the created resource.
return response.Headers.Location;
}
static async Task<Product> GetProductAsync(string path)
{
Product product = null;
HttpResponseMessage response = await client.GetAsync(path);
if (response.IsSuccessStatusCode)
{
product = await response.Content.ReadAsAsync<Product>();
}
return product;
}
static async Task<Product> UpdateProductAsync(Product product)
{
HttpResponseMessage response = await client.PutAsJsonAsync($"api/products/{product.Id}", product);
response.EnsureSuccessStatusCode();
// Deserialize the updated product from the response body.
product = await response.Content.ReadAsAsync<Product>();
return product;
}
static async Task<HttpStatusCode> DeleteProductAsync(string id)
{
HttpResponseMessage response = await client.DeleteAsync($"api/products/{id}");
return response.StatusCode;
}
static void Main()
{
RunAsync().Wait();
}
static async Task RunAsync()
{
client.BaseAddress = new Uri("http://localhost:55268/");
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
try
{
// Create a new product
Product product = new Product { Name = "Gizmo", Price = 100, Category = "Widgets" };
var url = await CreateProductAsync(product);
Console.WriteLine($"Created at {url}");
// Get the product
product = await GetProductAsync(url.PathAndQuery);
ShowProduct(product);
// Update the product
Console.WriteLine("Updating price...");
product.Price = 80;
await UpdateProductAsync(product);
// Get the updated product
product = await GetProductAsync(url.PathAndQuery);
ShowProduct(product);
// Delete the product
var statusCode = await DeleteProductAsync(product.Id);
Console.WriteLine($"Deleted (HTTP Status = {(int)statusCode})");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
Console.ReadLine();
}
}
}