string apiUrl="http://localhost:36727/api/yourapiclass";
using (var client = new HttpClient())
{
var json = JsonConvert.SerializeObject(YourModel);
var stringContent = new StringContent(json, Encoding.UTF8,
"application/json");
model = client
.PostAsync(apiUrl + "/YourActionName", stringContent)
.Result
.Content.ReadAsAsync<ResponseModel>().Result;
}