Question

我想要的很简单，我想通过我的应用程序从我的网站上读取文本文件，我设法在C＃中执行此操作，但在Metro应用程序中没有这样做，这里我的代码在C＃中

WebClient client = new WebClient();
Stream stream = client.OpenRead(strURL);
StreamReader reader = new StreamReader(stream);
String content = reader.ReadToEnd();
return content;

除了上面的代码我还尝试了下面的代码，但仍然失败

HttpWebRequest request = (HttpWebRequest)
WebRequest.Create(strURL);

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

Stream resStream = response.GetResponseStream();
string tempString = null;
int count = 0;
byte[] buf = new byte[1000];
StringBuilder sb = new StringBuilder();

do
{
  count = resStream.Read(buf, 0, buf.Length);
  if (count != 0)
  {
    tempString = Encoding.Unicode.GetString(buf, 0, count);
    sb.Append(tempString);
  }
}
return sb.ToString();

我认为问题出在WebClient和GetResponse（）中，这在Metro应用程序中是未知的

Answer 1

您应该可以使用System.Net.Http.HttpClient和HttpResponseMessage，因为它们包含在http://msdn.microsoft.com/en-us/library/windows/apps/hh454046.aspx中。

http://msdn.microsoft.com/en-us/library/system.net.http.httpclient.aspx上有一个例子：

static async void Main()
{
    try 
    {
      // Create a New HttpClient object.
      HttpClient client = new HttpClient();

      HttpResponseMessage response = await client.GetAsync("http://www.contoso.com/");
      response.EnsureSuccessStatusCode();
      string responseBody = await response.Content.ReadAsStringAsync();
      // Above three lines can be replaced with new helper method in following line 
      // string body = await client.GetStringAsync(uri);

      Console.WriteLine(responseBody);
    }  
    catch(HttpRequestException e)
    {
      Console.WriteLine("\nException Caught!"); 
      Console.WriteLine("Message :{0} ",e.Message);
    }
 }

Answer 2

var httpClient = new HttpClient();
var text = await httpClient.GetStringAsync(uri);

当然是以异步方式包装

Metro Apps：C＃，从互联网上读取文本文件

2 个答案: