.net 是否可以从 url 读取到 System.IO.Stream 对象？
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Is it possible to read from a url into a System.IO.Stream object?
提问by swolff1978
I am attempting to read from a url into a System.IO.Stream object. I tried to use
我正在尝试从 url 读取到 System.IO.Stream 对象。我试着用
Dim stream as Stream = New FileStream(msgURL, FileMode.Open)
but I get an error that URI formats are not supported with FileStream objects. Is there some method I can use that inherits from System.IO.Stream that is able to read from a URL?
但我收到一个错误，即 FileStream 对象不支持 URI 格式。是否有一些我可以使用继承自 System.IO.Stream 的方法可以从 URL 中读取？
回答by Thomas Levesque
Use WebClient.OpenRead:
使用WebClient.OpenRead：
Using wc As New WebClient()
Using stream As Stream = wc.OpenRead(msgURL)
...
End Using
End Using
回答by Joel Coehoorn
VB.Net:
VB.Net：
Dim req As WebRequest = HttpWebRequest.Create("url here")
Using stream As Stream = req.GetResponse().GetResponseStream()
End Using
C#:
C＃：
var req = System.Net.WebRequest.Create("url here");
using (Stream stream = req.GetResponse().GetResponseStream())
{
}
回答by Guffa
Yes, you can use a HttpWebRequest object to get a response stream:
是的，您可以使用 HttpWebRequest 对象来获取响应流：
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream receiveStream = response.GetResponseStream();
// read the stream
receiveStream.Close();
response.Close();
(Stripped down and simplifed from the docs).
（从文档中剥离和简化）。
