windows phone 7 - c#读取流阅读器网页Uri相对

本文关键字:网页 Uri 相对 phone 读取 windows | 更新日期: 2023-09-27 18:01:45

我下载阅读这个网页的内容,我使用这个代码这是一个Windows手机应用程序

string html = new StreamReader(Application.GetResourceStream(new Uri("http://www.knbsb.nl/nw/index.php?option=com_content&view=category&layout=blog&id=382&Itemid=150&lang=nl&LevelID=120&CompID=1580", UriKind.Relative)).Stream).ReadToEnd();

我知道UriKind是设置为相对的,但它必须为其他脚本。

所以基本上我必须使网页从一个绝对的Uri相对Uri。但我不知道该怎么做!

windows phone 7 - c#读取流阅读器网页Uri相对

您需要异步发出请求。
您可以使用以下内容作为帮助器:

public static void RequestAsync(Uri url, Action<string, Exception> callback)
{
    if (callback == null)
    {
        throw new ArgumentNullException("callback");
    }
    try
    {
        var req = WebRequest.CreateHttp(url);
        AsyncCallback getTheResponse = ar =>
        {
            try
            {
                string responseString;
                var request = (HttpWebRequest)ar.AsyncState;
                using (var resp = (HttpWebResponse)request.EndGetResponse(ar))
                {
                    using (var streamResponse = resp.GetResponseStream())
                    {
                        using (var streamRead = new StreamReader(streamResponse))
                        {
                            responseString = streamRead.ReadToEnd();
                        }
                    }
                }
                callback(responseString, null);
            }
            catch (Exception ex)
            {
                callback(null, ex);
            }
        };
        req.BeginGetResponse(getTheResponse, req);
    }
    catch (Exception ex)
    {
        callback(null, ex);
    }
}

你可以这样调用:

private void Button_Click(object sender, RoutedEventArgs e)
{
    RequestAsync(
        new Uri("http://www.knbsb.nl/nw/index.php?option=com_content&view=category&layout=blog&id=382&Itemid=150&lang=nl&LevelID=120&CompID=1580"),
        (html, exc) =>
            {
                if (exc == null)
                {
                    Dispatcher.BeginInvoke(() => MessageBox.Show(html));
                }
                else
                {
                    // handle exception appropriately
                }
            });
}

你可以使用WebClient来做。

  using (var client = new WebClient())
        {
            string result = client.DownloadString("http://www.youtsite.com");
//do whatever you want with the string. 
    }

Application.GetResourceStream用于从应用程序包中读取资源,而不是用于从web请求资源。

使用HttpWebRequestWebClient类代替。

的例子:

string html;
using (WebClient client = new WebClient()) {
  html = client.DownloadString("http://www.knbsb.nl/nw/index.php?option=com_content&view=category&layout=blog&id=382&Itemid=150&lang=nl&LevelID=120&CompID=1580");
}