C#实现FTP方式下载功能

昌梨舒

public static void DownLoadXmlFile(String url, String ftpAccount ,String ftpPassword)
{
FtpWebRequest reqFTP = null;
try
{
FileStream outputStream = new FileStream(Application.StartupPath + @"\UpdateList.xml", FileMode.Create);
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpAccount, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show("文件下载失败错误为" + ex.Message.ToString(), "温馨提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}