我的想法是，如果我选择了多个文件，然后上传一个文件，那么当它完成上传后再上传下一个文件，依此类推。
我更改了filedialoug以便能够选择多个：
private void btnBrowse_Click(object sender, EventArgs e)
{
openFileDialog1.Multiselect = true;
if (this.openFileDialog1.ShowDialog() != DialogResult.Cancel)
this.txtUploadFile.Text = this.openFileDialog1.FileName;
}
我可以选择多个文件，问题是当使用断点时我在this.txtUploadFile.Text上看到一个文件只是我选择的第一个文件。 txtUploadFile是一个textBox。
首先是：我怎样才能在textBox（txtUploadFile）上看到所有选中的文件，而不仅仅是一个？或者我怎样才能得到一些迹象表明我选择的所有文件都是真的选中的？也许在textBox中以某种方式显示所有文件都被选中了？
重要的部分是：如何逐个上传所有选定的文件？
这是启动文件上传的按钮点击事件：
private void btnUpload_Click(object sender, EventArgs e)
{
if(this.ftpProgress1.IsBusy)
{
this.ftpProgress1.CancelAsync();
this.btnUpload.Text = "Upload";
}
else
{
FtpSettings f = new FtpSettings();
f.Host = this.txtHost.Text;
f.Username = this.txtUsername.Text;
f.Password = this.txtPassword.Text;
f.TargetFolder = this.txtDir.Text;
f.SourceFile = this.txtUploadFile.Text;
f.Passive = this.chkPassive.Checked;
try
{
f.Port = Int32.Parse(this.txtPort.Text);
}
catch { }
this.toolStripProgressBar1.Visible = true;
this.ftpProgress1.RunWorkerAsync(f);
this.btnUpload.Text = "Cancel";
}
}
我还有一个带有progressBar的后台工作人员，所以上传progressBar的每个文件应显示今天上传的进度，因为我只能上传一个文件，因此它显示了一个文件：
private void ftpProgress1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
this.toolStripStatusLabel1.Text = e.UserState.ToString(); // The message will be something like: 45 Kb / 102.12 Mb
this.toolStripProgressBar1.Value = Math.Min(this.toolStripProgressBar1.Maximum, e.ProgressPercentage);
}
private void ftpProgress1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if(e.Error != null)
MessageBox.Show(e.Error.ToString(), "FTP error");
else if(e.Cancelled)
this.toolStripStatusLabel1.Text = "Upload Cancelled";
else
this.toolStripStatusLabel1.Text = "Upload Complete";
this.btnUpload.Text = "Upload";
this.toolStripProgressBar1.Visible = true;
}
最后是FTP上传器的类：
using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Text;
namespace FTP_ProgressBar
{
public partial class FtpProgress : BackgroundWorker
{
public static string ConnectionError;
private FtpSettings f;
public FtpProgress()
{
InitializeComponent();
}
public FtpProgress(IContainer container)
{
container.Add(this);
InitializeComponent();
}
private void FtpProgress_DoWork(object sender, DoWorkEventArgs e)
{
try
{
BackgroundWorker bw = sender as BackgroundWorker;
f = e.Argument as FtpSettings;
string UploadPath = String.Format("{0}/{1}{2}", f.Host, f.TargetFolder == "" ? "" : f.TargetFolder + "/", Path.GetFileName(f.SourceFile));
if (!UploadPath.ToLower().StartsWith("ftp://"))
UploadPath = "ftp://" + UploadPath;
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(UploadPath);
request.UseBinary = true;
request.UsePassive = f.Passive;
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Timeout = 300000;
request.Credentials = new NetworkCredential(f.Username, f.Password);
long FileSize = new FileInfo(f.SourceFile).Length;
string FileSizeDescription = GetFileSize(FileSize);
int ChunkSize = 4096, NumRetries = 0, MaxRetries = 50;
long SentBytes = 0;
byte[] Buffer = new byte[ChunkSize];
using (Stream requestStream = request.GetRequestStream())
{
using (FileStream fs = File.Open(f.SourceFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
int BytesRead = fs.Read(Buffer, 0, ChunkSize);
while (BytesRead > 0)
{
try
{
if (bw.CancellationPending)
return;
requestStream.Write(Buffer, 0, BytesRead);
SentBytes += BytesRead;
string SummaryText = String.Format("Transferred {0} / {1}", GetFileSize(SentBytes), FileSizeDescription);
bw.ReportProgress((int)(((decimal)SentBytes / (decimal)FileSize) * 100), SummaryText);
}
catch (Exception ex)
{
Debug.WriteLine("Exception: " + ex.ToString());
if (NumRetries++ < MaxRetries)
{
fs.Position -= BytesRead;
}
else
{
throw new Exception(String.Format("Error occurred during upload, too many retries. \n{0}", ex.ToString()));
}
}
BytesRead = fs.Read(Buffer, 0, ChunkSize);
}
}
}
using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
System.Diagnostics.Debug.WriteLine(String.Format("Upload File Complete, status {0}", response.StatusDescription));
}
catch (WebException ex)
{
switch (ex.Status)
{
case WebExceptionStatus.NameResolutionFailure:
ConnectionError = "Error: Please check the ftp address";
break;
case WebExceptionStatus.Timeout:
ConnectionError = "Error: Timout Request";
break;
}
}
}
public static string GetFileSize(long numBytes)
{
string fileSize = "";
if(numBytes > 1073741824)
fileSize = String.Format("{0:0.00} Gb", (double)numBytes / 1073741824);
else if(numBytes > 1048576)
fileSize = String.Format("{0:0.00} Mb", (double)numBytes / 1048576);
else
fileSize = String.Format("{0:0} Kb", (double)numBytes / 1024);
if(fileSize == "0 Kb")
fileSize = "1 Kb";
return fileSize;
}
}
public class FtpSettings
{
public string Host, Username, Password, TargetFolder, SourceFile;
public bool Passive;
public int Port = 21;
}
}
有点长，但我无法找到缩小代码的方法，因为它们都是相互连接的。
我需要做的是，如果我选择多个文件制作类似队列的内容，并在完成上传下一个文件后自动上传一个文件，依此类推，直到最后一个文件。
今天我只能上传一个文件。每次单个文件。 我需要它会自动上传所有选定的文件。现在就像使用progressBar和backgroundworker一样。
答案 0 :(得分：1)
这是一个如何从ftp的地址上传多个文件的程序 - 一个ftp服务器的地址：
private void uploadFTP(DirectoryInfo d, string ftp)
{
FileInfo[] flist = d.GetFiles();
if (flist.GetLength(0) > 0)
{
foreach (FileInfo txf in flist)
{
FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(ftp + txf.Name);
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential("username", "password");
request.UsePassive = true;
request.UseBinary = true;
request.KeepAlive = false;
FileStream stream = File.OpenRead(txf.FullName);
byte[] buffer = new byte[stream.Length];
stream.Read(buffer, 0, buffer.Length);
stream.Close();
Stream reqStream = request.GetRequestStream();
reqStream.Write(buffer, 0, buffer.Length);
reqStream.Close();
txf.Delete();
}
}
}
答案 1 :(得分：0)