C# 向httpclient添加处理程序后无法添加构造函数

为什么我不能在添加

DelegatingHandler

后添加身份验证详细信息？

在添加

DelegatingHandler

之前，我能够实例化

HttpClient

，如下所示：

var client = new HttpClient{Credentials = ..., BaseAddress = ...};

添加了

DelegatingHandler

后，我无法添加

凭据

和

基本地址

：

var client = new HttpClient(new RetryHandler(new HttpClientHandler()));
client.BaseAddress = // does not exist!
client.Credentials = // does not exist!

---

如何将凭据和基地址添加到此客户端？这是您将凭据传递到处理程序的方式：

var clientHandler = new HttpClientHandler()
{
    Credentials = ...
};

var retryHandler = new RetryHandler(clientHandler);

var client = new HttpClient(retryHandler )
{
    BaseAddress = ...
};