PostAsJsonAsync posts as text/html onto server and not as JSON

Question

I'm trying to post a JSON string on a PHP page using Async methods as follows:
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
namespace test_http
class Product
public string Name { get; set; }
public double Price { get; set; }
public string Category { get; set; }
class Program
static void Main()
RunAsync().Wait();
static async Task RunAsync()
using (var client = new HttpClient())
client.BaseAddress = new Uri("http://localhost/ABC/products.php");
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
// HTTP GET
HttpResponseMessage response = await client.GetAsync("products/1");
Console.WriteLine(response.ToString());
if (response.IsSuccessStatusCode)
Product product = await response.Content.ReadAsAsync<Product>();
Console.WriteLine("{0}\t${1}\t{2}", product.Name, product.Price, product.Category);
// HTTP POST
var gizmo = new Product() { Name = "Gizmo", Price = 100, Category = "Widget" };
response = await client.PostAsJsonAsync(client.BaseAddress, gizmo);
Console.WriteLine(response.ToString());
if (response.IsSuccessStatusCode)
Uri gizmoUrl = response.Headers.Location;
// HTTP PUT
gizmo.Price = 80; // Update price
response = await client.PutAsJsonAsync(gizmoUrl, gizmo);
Console.WriteLine(response.ToString());
// HTTP DELETE
response = await client.DeleteAsync(gizmoUrl);
Console.WriteLine(response.ToString());
I get a 200 status OK for POST, PUT and DELETE operations on the console window. But the PHP page displays nothing being posted. PHP code:
<?php
var_dump(json_decode(file_get_contents('php://input')));
?>
I figured out that the content-type of data being being posted is shown as 'text/html' in the console instead of 'application/json' and hence the PHP is unable to recognise the POST. But i dont know what i'm doing wrong here. could someone please help out?
Thanks,
Revathy

Answer 1

You could serialize the object your self, and post it with the correct Media-Type:
HttpClient client = new HttpClient();
StringContent content = new StringContent(
JsonConvert.SerializeObject(gizmo),
UTF8Encoding.UTF8,
"application/json");
var response = await client.PostAsync(requestUri, content);