使用C#下载一个Internet上的文件主要是依靠HttpWebRequest/HttpWebResonse和WebClient。具体处理起来还有同步和异步两种方式,所以我们其实有四种组合
1、使用HttpWebRequest/HttpWebResonse和WebClient
复制代码 代码如下:
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
WebResponse response = request.GetResponse();
Stream stream = response.GetResponseStream();
if (!response.ContentType.ToLower().StartsWith("text/"))
{
//Value = SaveBinaryFile(response, FileName);
byte[] buffer = new byte[1024];
Stream outStream = System.IO.File.Create(FileName);
Stream inStream = response.GetResponseStream();
int l;
do
{
l = inStream.Read(buffer, 0, buffer.Length);
if (l > 0)
outStream.Write(buffer, 0, l);
}
while (l > 0);
outStream.Close();
inStream.Close();
}
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