看看这里,这里描述了下载和保存文件的过程。
以下是从请求响应标头中获取文件名的方法:
String header = client.ResponseHeaders["content-disposition"];
String filename = new ContentDisposition(header).FileName;
还有一个注意事项:这里的客户端是 WebClient 组件。这里是如何使用 WebClient 下载:在此处输入链接描述
------完整的解决方案----------------------------
事实证明,您的服务器使用身份验证。这就是为什么为了下载文件,我们必须通过身份验证。所以,请写下完整的细节。这是代码:
private class CWebClient : WebClient
{
public CWebClient()
: this(new CookieContainer())
{ }
public CWebClient(CookieContainer c)
{
this.CookieContainer = c;
}
public CookieContainer CookieContainer { get; set; }
protected override WebRequest GetWebRequest(Uri address)
{
WebRequest request = base.GetWebRequest(address);
if (request is HttpWebRequest)
{
(request as HttpWebRequest).CookieContainer = this.CookieContainer;
}
return request;
}
}
static void Main(string[] args)
{
var client = new CWebClient();
client.BaseAddress = @"http://forum.tractor-italia.net/";
var loginData = new NameValueCollection();
loginData.Add("username", "demodemo");
loginData.Add("password", "demodemo");
loginData.Add("login","Login");
loginData.Add("redirect", "download/myfile.php?id=1622");
client.UploadValues("ucp.php?mode=login", null, loginData);
string remoteUri = "http://forum.tractor-italia.net/download/myfile.php?id=1622";
client.OpenRead(remoteUri);
string fileName = String.Empty;
string contentDisposition = client.ResponseHeaders["content-disposition"];
if (!string.IsNullOrEmpty(contentDisposition))
{
string lookFor = @"=";
int index = contentDisposition.IndexOf(lookFor, 0);
if (index >= 0)
fileName = contentDisposition.Substring(index + lookFor.Length+7);
}//attachment; filename*=UTF-8''JohnDeere6800.zip
client.DownloadFile(remoteUri, fileName);
}
在我的电脑上工作。