asp.net上的承载令牌身份验证失败

我正在尝试在web api上发出GET请求。我构建客户端。问题似乎在于使用承载令牌进行身份验证。我已经看过很多帖子了，但是都没用

这是我的密码：

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

namespace AuthUsingBearerToken
{
    class Program
{
    static void Main(string[] args)
    {
        RunClient();
        Console.ReadLine();
    }

    static void RunClient()
    {
        using (var client = new HttpClient())
        {
            client.BaseAddress = new Uri("uri");//address of web api
            client.DefaultRequestHeaders.Accept.Clear();//removes all entries from system.net.http.headers...
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));//adds an entry to system in json format

            //First Method i tried
            //client.DefaultRequestHeaders.Accept.Add(new AuthenticationHeaderValue("Bearer ", "token from web api));

            //Second method
            // var token = "token from web api";
            // client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);

            //Third Method
            //client.DefaultRequestHeaders.Add("Authorization", "Bearer " + token);
            GetPatient(client, "1").Wait();

        }
    }

    public static async Task GetPatient(HttpClient client, string id)
    {
        try
        {
            HttpResponseMessage response = await client.GetAsync(""+id);
            response.EnsureSuccessStatusCode();

            Patient patient = await response.Content.ReadAsAsync<Patient>();

            Console.WriteLine("Id: {0}\tName: {1}", patient.id, patient.patient_name);

        }
        catch (HttpRequestException e)
        {
            Console.WriteLine("{0}", e.Message);
            throw;
        }
    }


}

我的问题是：

如何使用令牌身份验证创建承载？ 还是我做得不对

---

谢谢大家!

您需要向web api授权端点发送有效请求，例如带有以下http正文键值对的\token：用户名、密码、客户端\u id和授权\u type=password。确保遵循请求标题的内容类型

对于该用途，请等待client.PostAsynctoken，content

如果授权成功，您将收到一个带有access_令牌的响应。您可以使用令牌对象反序列化为apitonk=await JsonConvert.DeserializeObjectresponse.Content.ReadAsStringAsync

将该令牌添加到需要验证的任何后续请求的头中：Authorization:Bearer{acces\u token\u value}

client.DefaultRequestHeaders.Authorization=新的AuthenticationHeaderValueBearner，ApiToken.ToString

关于这个主题有很多资源，我最感兴趣的是：