多重下载/平行的FTP使用C#上传 [英] Multiple Download/Upload parallely in FTP using C#
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问题描述
我想要做的多重下载/使用C#不使用的FtpWebRequest在FTP上传平行。
我已经写了我的自定义代码,当我试图同时下载两个文件第一个获得下载正确的,而第二个显示大小为0 KB(也下载)。
I want to do Multiple Download/Upload parallely in FTP using C# without using FTPWebRequest. I have written my custom code and when i try to download two files simultaneously first one get download properly while second one shows size as 0 KB(it also downloads).
public void sendCommand(String command, params string[] strfilename)
{
if (command == "RETR ") //Downloading file from Server
{
FileStream output = null;
if (!File.Exists(strfilename[0]))
output = File.Create(strfilename[0]);
else
output = new FileStream(strfilename[0] , FileMode.Open);
command = "RETR " + strfilename[0];
Byte[] cmdBytes = Encoding.ASCII.GetBytes((command + "\r\n").ToCharArray());
clientSocket.Send(cmdBytes, cmdBytes.Length, 0);
Socket csocket = createDataSocket();
DateTime timeout = DateTime.Now.AddSeconds(this.timeoutSeconds);
while (timeout > DateTime.Now)
{
this.bytes = csocket.Receive(buffer, buffer.Length, 0);
output.Write(this.buffer, 0, this.bytes);
if (this.bytes <= 0)
{
break;
}
}
// this.BinaryMode = true;
output.Close();
if (csocket.Connected) csocket.Close();
this.readResponse();
MessageBox.Show("File Downloaded successfully");
else if....so on
}
}
在我的主要方法,我这样做:
In my main method i do like this:
ftpcommand.sendCommand("RETR ","RMSViewer.xml"); //Downloading from Server
ftpcommand.sendCommand("RETR ","cms.xml");//Downloading from Server
任何代码片段....
Any code snippet....
推荐答案
戴维说,你需要单独的实例您ftpCommand类。考虑使用BackgroundWorker的在后台(异步)运行命令。
As Dave said, you'd need separate instances of your ftpCommand class. Look into use the BackgroundWorker to run the commands in the background (asynchronously).
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