private HttpClient _httpClient = new HttpClient();
private string PostToOwner(CarOwnerCoupon postData)
{
string url ="www.abcxxxx.com";
string base64Creds ="user" + ":" +"pwd";
_httpClient.BaseAddress = new Uri(url);
_httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(
"Basic", Convert.ToBase64String(Encoding.ASCII.GetBytes(base64Creds)));
HttpContent content = new StringContent(JsonSerializer.Serialize(postData));
content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
var result = _httpClient.PostAsync(url, content).Result.Content.ReadAsStringAsync().Result;
return result;
}