C#中哪个类的什么方法可以获得远程文件的大小？

[gwjjeff]

rt--

[ArLi2003]

远程文件?

http? ftp? soap? mms? share?

[gwjjeff]

http

[michaelowenii]

Perhaps you could using FileInformation class .

[saucer]

try

public static long GetRemoteHTTPFileSize(string sURL)
{
long size = 0L;
try
{
System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(sURL);
request.Method = "HEAD";

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

size = response.ContentLength;
//size = System.Convert.ToInt64(response.Headers["Content-Length"]);
response.Close();
}
catch
{
size = 0L;
}

return size;
}


System.Console.WriteLine(GetRemoteHTTPFileSize("http://www.csdn.net/images/homeimage/csdn.gif")); //should be 2839