Call Async Post Method

using (var client = new HttpClient())
{
 client.BaseAddress = new Uri("Your URL");
 client.DefaultRequestHeaders.Accept.Clear();
 client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var response = client.PostAsync("API method name", new StringContent(JsonConvert.SerializeObject( "Parameter to send").ToString(), Encoding.UTF8, "application/json")).Result.Content.ReadAsStringAsync().Result;
var resultList = JsonConvert.DeserializeObject<List<"Your DTO Type">>(response ).ToList();
}