Windows phone WebClient

Question

我正在使用WebClient从网页获取页面，当我获得谷歌开始页面一切正常，但当我从vk应用程序接口WebClient返回服务器没有找到页面，但浏览器打开此页面正常我的代码：

private void log_Click(object sender, RoutedEventArgs e)
{
    string auth;
    string login = Uri.EscapeUriString(this.login.Text);
    string password = Uri.EscapeUriString(this.pass.Password);
    auth = "https://api.vk.com/oauth/token";
    auth += "?grant_type=password" + "&client_id=id&client_secret=code&username=" + login + "&password=" + password + "&scope=notify,friends,messages";

    //auth = "https://google.com/";

    WebClient client = new WebClient();
    client.DownloadStringCompleted +=new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
    Uri.EscapeUriString(auth);
    client.DownloadStringAsync(new Uri(auth));
}
void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
    if (e.Error == null)
         MessageBox.Show("Using WebClient: " + e.Result);

    else
        MessageBox.Show(e.Error.Message);
}

Answer 1

这仅适用于具有非200响应状态的https呼叫。如果您收到具有正确凭据的Not found，请检查您的请求参数。

尝试对非200使用此解决方法

client.AllowReadStreamBuffering = true;

另外，我看到这一行Uri.EscapeUriString(auth);，我想它一定是auth = Uri.EscapeUriString(auth);