C# HttpClient DeleteAsync() with Header

gistfile1.cs

class Program
{
    static void Main()
    {
        HttpAsync().Wait();
        Console.ReadKey();
    }

    private static async Task HttpAsync()
    {
        using (var client = new HttpClient {BaseAddress = new Uri("http://localhost:61415")})
        {
            client.DefaultRequestHeaders.Add("X-Parse-Application-Id", new[] {"12345"});

            using (var result = await client.DeleteAsync("/api/values/55"))
            {
                result.EnsureSuccessStatusCode();
                Console.WriteLine("success");
            }
        }
    }
}