c# - 如何使 HttpWebRequest 函数异步？

Question

我正在尝试使我的函数异步。我该怎么做？它是一个 HttpWebRequest

private void PostToGoogleChat(string json)
{
    HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(_chatUrl);
    httpWebRequest.ContentType = "application/json";
    httpWebRequest.Method = "POST";


    using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
    {
        streamWriter.Write(json);
    }

    var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
    using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
    {
        var result = streamReader.ReadToEnd();
    }
}

Answer 1

 HttpClient client = new HttpClient();  

public async Task PostAsync(string actionName, object json)
{
        var content = new StringContent(json.ToString(), Encoding.UTF8,"application/json");
        var resultRoles = await client.PostAsync(new Uri(actionName),content);
}

您是新手，所以我不会详细介绍 HttpClient，但应该重用该实例。尝试对如何实现这一点进行一些 self 研究。