Test JWT (edit)

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp4
{
 public class RegisterViewModel
 {
 public string UserName { get; set; }
 public string Password { get; set; }
 public string FirstName { get; set; }
 public string LastName { get; set; }
 public DateTime BirthDate { get; set; }
 }

 public class RegisterBindingModel
 {
 public string Email { get; set; }

 public string Password { get; set; }

 public string ConfirmPassword { get; set; }
 }

 internal class Program
 {
 private static string baseUri = "http://localhost:55751";

 private static async Task RegisterUserAsync()
 {
 string tokenEndPoint = baseUri + "/api/Account/Register";

 var registerViewModel = new RegisterBindingModel
 {
 Email = "manhng@outlook.com",
 Password = "123456a@A",
 ConfirmPassword = "123456a@A"
 };

 var jsonString = JsonConvert.SerializeObject(registerViewModel);

 HttpContent content = new StringContent(jsonString, Encoding.UTF8, "application/json");

 using (var httpClient = new HttpClient())
 {
 httpClient.BaseAddress = new Uri(baseUri);
 var message = await httpClient.PostAsync(tokenEndPoint, content);
 var responseString = await message.Content.ReadAsStringAsync();
 if (!string.IsNullOrWhiteSpace(responseString))
 {
 Console.WriteLine("Error.");
 return;
 }
 }
 Console.WriteLine("Success.");
 }

 private static async Task CreateNewUserAsync()
 {
 string tokenEndPoint = baseUri + "/api/Account/Register";

 var registerViewModel = new RegisterViewModel
 {
 UserName = "manhng@outlook.com",
 Password = "123456a@",
 FirstName = "Manh",
 LastName = "Nguyen",
 BirthDate = Convert.ToDateTime("2019-05-21")
 };

 var jsonString = JsonConvert.SerializeObject(registerViewModel);

 HttpContent content = new StringContent(jsonString, Encoding.UTF8, "application/json");

 using (var httpClient = new HttpClient())
 {
 httpClient.BaseAddress = new Uri(baseUri);
 var message = await httpClient.PostAsync(tokenEndPoint, content);
 var responseString = await message.Content.ReadAsStringAsync();
 if (!string.IsNullOrWhiteSpace(responseString))
 {
 Console.WriteLine("Error.");
 return;
 }
 }
 }

 private static string GetToken()
 {
 Task<string> task = Task.Run<string>(async () => await GetTokenAsync());
 return task.Result;
 }

 private static async Task<string> GetTokenAsync()
 {
 string oauthToken = string.Empty;

 string tokenEndPoint = baseUri + "/Token";

 HttpContent content = new FormUrlEncodedContent(new Dictionary<string, string>
 {
 {"grant_type", "password"},
 {"username", "manhng@outlook.com"},
 {"password", "123456a@A"}
 });

 using (var httpClient = new HttpClient())
 {
 httpClient.BaseAddress = new Uri(baseUri);
 var message = await httpClient.PostAsync(tokenEndPoint, content);
 var responseString = await message.Content.ReadAsStringAsync();
 if (responseString.Contains("access_token"))
 {
 var obj = JObject.Parse(responseString);
 oauthToken = (string)obj["access_token"];
 //var tokenType = (string)obj["token_type"];
 //var expiresIn = (int)obj["expires_in"]; //The number of seconds left before the token becomes invalid.
 }
 }

 return oauthToken;
 }

 private static void Main(string[] args)
 {
 string token = GetToken();
 Console.WriteLine(token);
 }

 //private static async Task Main(string[] args)
 //{
 // await RegisterUserAsync();
 //}
 }
}