实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
namespace FTP24CP
{
public partial class Form1 : Form
{
string ftpServerIP;
string ftpUserID;
string ftpPassword;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
ftpServerIP = "192.168.1.21";
ftpUserID = "administrator";
ftpPassword = "xxxxx";
txtServerIP.Text = ftpServerIP;
txtUsername.Text = ftpUserID;
txtPassword.Text = ftpPassword;
this.Text = ftpServerIP;
btnFTPSave.Enabled = false;
}
/// <summary>
/// Method to upload the specified file to the specified FTP Server
/// </summary>
/// <param name="filename">file full name to be uploaded</param>
private void Upload(string filename)
{
FileInfo fileInf = new FileInfo(filename);
string uri = "ftp://" ftpServerIP "/" fileInf.Name;
FtpWebRequest reqFTP;
// Create FtpWebRequest object from the Uri provided
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" ftpServerIP "/" fileInf.Name));
// Provide the WebPermission Credintials
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
// By default KeepAlive is true, where the control connection is not closed
// after a command is executed.
reqFTP.KeepAlive = false;
// Specify the command to be executed.
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
// Specify the data transfer type.
reqFTP.UseBinary = true;
// Notify the server about the size of the uploaded file
reqFTP.ContentLength = fileInf.Length;
// The buffer size is set to 2kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
// Opens a file stream (System.IO.FileStream) to read the file to be uploaded
FileStream fs = fileInf.OpenRead();
try
{
// Stream to which the file to be upload is written
Stream strm = reqFTP.GetRequestStream();
// Read from the file stream 2kb at a time
contentLen = fs.Read(buff, 0, buffLength);
// Till Stream content ends
while (contentLen != 0)
{
// Write Content from the file stream to the FTP Upload Stream
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
// Close the file stream and the Request Stream
strm.Close();
fs.Close();
}
catch(Exception ex)
{
MessageBox.Show(ex.Message, "Upload Error");
}
}
public void DeleteFTP(string fileName)
{
try
{
string uri = "ftp://" ftpServerIP "/" fileName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" ftpServerIP "/" fileName));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
string result = String.Empty;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "FTP 2.0 Delete");
}
}
private string[] GetFilesDetailList()
{
string[] downloadFiles;
try
{
StringBuilder result = new StringBuilder();
FtpWebRequest ftp;
ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" ftpServerIP "/"));
ftp.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
WebResponse response = ftp.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf("\n"), 1);
reader.Close();
response.Close();
return result.ToString().Split('\n');
//MessageBox.Show(result.ToString().Split('\n'));
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
downloadFiles = null;
return downloadFiles;
}
}
public string[] GetFileList()
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" ftpServerIP "/"));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
//MessageBox.Show(reader.ReadToEnd());
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf('\n'), 1);
reader.Close();
response.Close();
//MessageBox.Show(response.StatusDescription);
return result.ToString().Split('\n');
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
downloadFiles = null;
return downloadFiles;
}
}
private void Download(string filePath, string fileName)
{
FtpWebRequest reqFTP;
try
{
//filePath = <<The full path where the file is to be created.>>,
//fileName = <<Name of the file to be created(Need not be the name of the file on FTP server).>>
FileStream outputStream = new FileStream(filePath "\\" fileName, FileMode.Create);
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" ftpServerIP "/" fileName));
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, 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(ex.Message);
}
}
private void btnUpload_Click(object sender, EventArgs e)
{
OpenFileDialog opFilDlg = new OpenFileDialog();
if (opFilDlg.ShowDialog() == DialogResult.OK)
{
Upload(opFilDlg.FileName);
}
}
private void btnDownload_Click(object sender, EventArgs e)
{
FolderBrowserDialog fldDlg = new FolderBrowserDialog();
if (txtUpload.Text.Trim().Length > 0)
{
if (fldDlg.ShowDialog() == DialogResult.OK)
{
Download(fldDlg.SelectedPath, txtUpload.Text.Trim());
}
}
else
{
MessageBox.Show("Please enter the File name to download");
}
}
private void btnLstFiles_Click(object sender, EventArgs e)
{
string[] filenames = GetFileList();
lstFiles.Items.Clear();
foreach (string filename in filenames)
{
lstFiles.Items.Add(filename);
}
}
private void btndelete_Click(object sender, EventArgs e)
{
OpenFileDialog fldDlg = new OpenFileDialog();
if (txtUpload.Text.Trim().Length > 0)
{
DeleteFTP(txtUpload.Text.Trim());
}
else
{
MessageBox.Show("Please enter the File name to delete");
}
}
private long GetFileSize(string filename)
{
FtpWebRequest reqFTP;
long fileSize = 0;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" ftpServerIP "/" filename));
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
fileSize = response.ContentLength;
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return fileSize;
}
private void Rename(string currentFilename, string newFilename)
{
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" ftpServerIP "/" currentFilename));
reqFTP.Method = WebRequestMethods.Ftp.Rename;
reqFTP.RenameTo = newFilename;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void MakeDir(string dirName)
{
FtpWebRequest reqFTP;
try
{
// dirName = name of the directory to create.
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" ftpServerIP "/" dirName));
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnFileSize_Click(object sender, EventArgs e)
{
long size = GetFileSize(txtUpload.Text.Trim());
MessageBox.Show(size.ToString() " bytes");
}
private void button1_Click(object sender, EventArgs e)
{
Rename(txtCurrentFilename.Text.Trim(), txtNewFilename.Text.Trim());
}
private void btnewDir_Click(object sender, EventArgs e)
{
MakeDir(txtNewDir.Text.Trim());
}
private void txtPassword_TextChanged(object sender, EventArgs e)
{
btnFTPSave.Enabled = true;
}
private void txtServerIP_TextChanged(object sender, EventArgs e)
{
btnFTPSave.Enabled = true;
}
private void txtUsername_TextChanged(object sender, EventArgs e)
{
btnFTPSave.Enabled = true;
}
private void btnFTPSave_Click(object sender, EventArgs e)
{
ftpServerIP = txtServerIP.Text.Trim();
ftpUserID = txtUsername.Text.Trim();
ftpPassword = txtPassword.Text.Trim();
btnFTPSave.Enabled = false;
}
private void btnFileDetailList_Click(object sender, EventArgs e)
{
string[] filenames = GetFilesDetailList();
lstFiles.Items.Clear();
foreach (string filename in filenames)
{
lstFiles.Items.Add(filename);
}
}
private void lstFiles_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
}
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