C# 设置特定于服务请求HTTP客户端的代理服务器+；休息

我如上所述创建HTTP客户端以使用RESTfull服务。 我应该能够为此服务请求设置代理。

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如何仅针对此服务请求设置代理服务器？

使用Microsoft.Http我可以

using (var client = new System.Net.Http.HttpClient())
            {
                var response = client.GetAsync(fullUrl).Result;
}

HttpClient=newhttpclient（）；
/*设置用于验证代理的凭据*/
client.TransportSettings.Proxy=新的WebProxy（proxyAddress）；
client.TransportSettings.Proxy.Credentials=CredentialCache.DefaultCredentials；
client.TransportSettings.Credentials=CredentialCache.DefaultCredentials；
client.BaseAddress=新Uri（this.baseUrl）；
var response=client.Get（fullUrl）；
var jsonresponse=response.Content.ReadAsJsonDataContract（）；
public static T ReadAsJsonDataContract（此HttpContent内容）
{
return（T）content.ReadAsJsonDataContract（newdatacontractjsonserializer（typeof（T））；
}

System.Net.Http.HttpClient没有TransportSettings属性，关于Microsoft。Http程序集未知。

我正在使用System.Net.Http.HttpClient

 HttpClient client = new HttpClient();
                /*Set Credentials to authenticate proxy*/
                client.TransportSettings.Proxy = new WebProxy(proxyAddress);
                client.TransportSettings.Proxy.Credentials = CredentialCache.DefaultCredentials;
                client.TransportSettings.Credentials = CredentialCache.DefaultCredentials;

                client.BaseAddress = new Uri(this.baseUrl);
                var response = client.Get(fullUrl);

                var jsonResponce = response.Content.ReadAsJsonDataContract<mYResponseoBJECT>();


 public static T ReadAsJsonDataContract<T>(this  HttpContent content)
        {
            return (T)content.ReadAsJsonDataContract<T>(new DataContractJsonSerializer(typeof(T)));
        }