Get token from context

TokenContainer.cs

using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Http;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;

namespace Management.Ui.Services
{
  public class TokenContainer
  {
    private readonly IHttpContextAccessor _httpContextAccessor;

    public TokenContainer(IHttpContextAccessor httpContextAccessor)
    {
        _httpContextAccessor = httpContextAccessor;
    }

    protected async Task AddRequestHeaders(HttpClient httpClient)
    {
        var accessToken = await _httpContextAccessor.HttpContext.GetTokenAsync("access_token");
        httpClient.DefaultRequestHeaders.Accept.Add(
        new MediaTypeWithQualityHeaderValue("application/json"));
        httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
    }
  }
}