我在 C# 中使用外部服务的授权有问题

如何解决我在 C# 中使用外部服务的授权有问题

当我使用 RestClient 使用服务时它工作正常但是当我使用 HttpClient 使用它时会收到这些错误“缺少授权”或“未处理的异常”

RestClient

        var client = new RestClient(url);
        client.Timeout = -1;
        var request = new RestRequest(Method.POST);
        request.AddHeader("Authorization",token);
        request.AlwaysMultipartFormData = true;
        request.AddParameter("business_branch_id","3");
        request.AddParameter("dropoff_address_line","Remal str. test address line");
        IRestResponse response = client.Execute(request);
        Console.WriteLine(response.Content);

HttpClient

using (var request = new HttpRequestMessage(HttpMethod.Post,url))
        {
            request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            //if i use this i get this error "Missing authorization"
            //request.Headers.Authorization = new AuthenticationHeaderValue("Bearer",token);

            //if i use this i get this error Unhandled Exception
            request.Headers.Add("Authorization",token);

            using (var streamContent = new StreamContent(memoryContentStream))
            {
                streamContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
                request.Content = streamContent;

                var response = _httpClient.SendAsync(request);

                var createdContent = response.Result.Content.ReadAsStringAsync();
                orderResponse = JsonConvert.DeserializeObject<OrderResponse>(createdContent.Result);

                orderResult = GetOrderResult(orderResponse);

            }
        }