在项目中,我使用 HttpWebRequest 来下载 Feeds:
HttpWebRequest request;
public void getFeeds()
{
request = (HttpWebRequest)WebRequest.Create("http://vnexpress.net/rss/gl/trang-chu.rss");
request.BeginGetResponse(ResponseCallBack, request);
}
SampleDataGroup group1;
private void ResponseCallBack(IAsyncResult result)
{
var request = (HttpWebRequest)result.AsyncState;
var response = request.EndGetResponse(result) as HttpWebResponse;
if (response != null && response.StatusCode == HttpStatusCode.OK)
{
var stream = response.GetResponseStream();
using (StreamReader reader = new StreamReader(stream))
{
string strReaderReader = reader.ReadToEnd();
XDocument doc = XDocument.Parse(strReaderReader);
var element = doc.Root.Element("channel").Elements("item");
group1 = new SampleDataGroup("Group-1",
"Hot News",
"Group Subtitle: 1",
"Assets/DarkGray.png",
"");
foreach (XElement x in element)
{
group1.Items.Add(new SampleDataItem("", x.Element("title").Value, "", "", "", "", group1));
}
request.Abort();
request = null;
_allGroups.Add(group1);
onComplete1();
}
}
}
onComplete1() 是委托(delegate),我用来在解析 XML 完成时更新布局。
但它错误:
System.Exception: The application called an interface that was marshalled for a different thread. (Exception from HRESULT: 0x8001010E (RPC_E_WRONG_THREAD))
请帮我 !
最佳答案
最有可能的是,您的 onComplete1()
方法进行了一些 UI 访问。
尝试将其包含在 Dispatcher.RunAsync 方法中:
this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
onComplete1();
});
或将其作为任务等待,具体取决于您的需要:
this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
onComplete1();
}).AsTask().Wait();