FtpWebResponse.Close 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
释放响应所持有的资源。
public:
override void Close();public override void Close();override this.Close : unit -> unitPublic Overrides Sub Close ()示例
下面的代码示例从服务器下载数据，从响应流读取数据，然后将其关闭。
public static bool DownloadFileFromServer(Uri serverUri, string localFileName)
{
// The serverUri parameter should start with the ftp:// scheme.
if (serverUri.Scheme != Uri.UriSchemeFtp)
{
return false;
}
// Get the object used to communicate with the server.
// Note that the cast to FtpWebRequest is done only
// for the purposes of illustration. If your application
// does not set any properties other than those defined in the
// System.Net.WebRequest class, you can use the following line instead:
// WebRequest request = WebRequest.Create(serverUri);
//
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(serverUri);
request.Method = WebRequestMethods.Ftp.DownloadFile;
FtpWebResponse response = (FtpWebResponse) request.GetResponse();
Stream responseStream = null;
StreamReader readStream = null;
StreamWriter writeStream = null;
try
{
responseStream = response.GetResponseStream();
readStream = new StreamReader(responseStream, System.Text.Encoding.UTF8);
// Display information about the data received from the server.
Console.WriteLine("Bytes received: {0}",response.ContentLength);
Console.WriteLine("Message from server: {0}", response.StatusDescription);
Console.WriteLine("Resource: {0}", response.ResponseUri);
// Write the bytes received from the server to the local file.
if (readStream != null)
{
writeStream = new StreamWriter(localFileName, false);
writeStream.Write(readStream.ReadToEnd());
}
}
finally
{
if (readStream != null)
{
readStream.Close();
}
if (response != null)
{
response.Close();
}
if (writeStream != null)
{
writeStream.Close();
}
}
return true;
}
注解
如果 属性为 ，则 Close 方法关闭 方法返回GetResponseStream的KeepAlive数据流。false 在关闭期间，可能会将数据发送到控制连接上的服务器。
备注
当你在应用程序中启用网络跟踪后，此成员将输出跟踪信息。 有关详细信息，请参阅 .NET Framework 中的网络跟踪。
