Question

我一直试图通过WebClient api阅读页面。但页面太大，响应太慢。有时我需要等待2分半钟才能得到完整的回复。

var client = new WebClient();
var stream = client.OpenRead("http://example.com");
using (var sr = new StreamReader(stream))
{
    string line;
    while ((line = sr.ReadLine()) != null)
    {
        // add line and do something else
    }
}

必须有更好的方法来处理它。我可以异步检索这些数据并在回调中完成我的工作吗？

Answer 1

这是使用HttpClient的示例。此方法将需要返回任务或任务＆lt;＆gt;并标记为异步。

using (var httpClient = new HttpClient())
{
    // This will process async
    var results = await httpClient.GetAsync("http://example.com");
    // This will process async
    var stream = await results.Content.ReadAsStreamAsync();
    using (var sr = new StreamReader(stream))
    {
        string line;
        while ((line = await sr.ReadLineAsync()) != null)
        {
            // add line and do something else
        }
    }
}

WebClient异步页面请求

1 个答案: