FtpWebRequest.Method : FtpWebRequest « System.Net

  



using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Windows.Forms;

using System.Net;

using System.IO;



class FtpClientForm : Form {

    public FtpClientForm() {

        InitializeComponent();

    }



    private string serverDirectory;



    private void OnOpen(object sender, EventArgs e) {

        Cursor currentCursor = this.Cursor;

        FtpWebResponse response = null;

        Stream stream = null;

        this.Cursor = Cursors.WaitCursor;



        FtpWebRequest request = (FtpWebRequest)WebRequest.Create(textServer.Text);

        request.Credentials = new NetworkCredential(textUsername.Text,

              textPassword.Text);

        request.Method = WebRequestMethods.Ftp.ListDirectory;



        response = (FtpWebResponse)request.GetResponse();



        stream = response.GetResponseStream();

        FillDirectoryList(stream);



        serverDirectory = null;

        buttonOpenDirectory.Enabled = false;

        buttonGetFile.Enabled = false;



        if (response != null)

            response.Close();

        if (stream != null)

            stream.Close();

        this.Cursor = currentCursor;

    }



    private void FillDirectoryList(Stream stream) {

        StreamReader reader = new StreamReader(stream);

        string content = reader.ReadToEnd();

        string[] files = content.Split('\n');

        listFiles.DataSource = files;

        reader.Close();

    }



    private void OnOpenDirectory(object sender, EventArgs e) {

        FtpWebResponse response = null;

        Stream stream = null;

        string subDirectory = listFiles.SelectedValue.ToString().Trim();

        serverDirectory += @"/" + subDirectory;

        Uri baseUri = new Uri(textServer.Text);

        Uri uri = new Uri(baseUri, serverDirectory);



        FtpWebRequest request = (FtpWebRequest)WebRequest.Create(uri);

        request.Credentials = new NetworkCredential(textUsername.Text,

              textPassword.Text);



        request.Method = WebRequestMethods.Ftp.ListDirectory;

        response = (FtpWebResponse)request.GetResponse();



        stream = response.GetResponseStream();

        FillDirectoryList(stream);

        if (response != null)

            response.Close();

        if (stream != null)

            stream.Close();

    }



    private void OnDownloadFile(object sender, EventArgs e) {

        FtpWebResponse response = null;

        Stream inStream = null;

        Stream outStream = null;

        Uri baseUri = new Uri(textServer.Text);



        string filename = listFiles.SelectedValue.ToString().Trim();

        string fullFilename = serverDirectory + @"/" + filename;



        Uri uri = new Uri(baseUri, fullFilename);



        FtpWebRequest request = (FtpWebRequest)WebRequest.Create(uri);

        request.Credentials = new NetworkCredential(textUsername.Text,textPassword.Text);

        request.Method = WebRequestMethods.Ftp.DownloadFile;

        request.UseBinary = checkBoxBinary.Checked;



        response = (FtpWebResponse)request.GetResponse();



        inStream = response.GetResponseStream();



        saveFileDialog1.FileName = filename;



        if (saveFileDialog1.ShowDialog() == DialogResult.OK) {

            outStream = File.OpenWrite(saveFileDialog1.FileName);

            byte[] buffer = new byte[4096];

            int size = 0;

            while ((size = inStream.Read(buffer, 0, 4096)) > 0) {

                outStream.Write(buffer, 0, size);

            }

        }



        if (inStream != null)

            inStream.Close();

        if (outStream != null)

            outStream.Close();

        if (response != null)

            response.Close();



    }



    private void OnFileSelection(object sender, EventArgs e) {

        this.buttonGetFile.Enabled = true;

        this.buttonOpenDirectory.Enabled = true;

    }

    private void InitializeComponent() {

        this.label1 = new System.Windows.Forms.Label();

        this.textServer = new System.Windows.Forms.TextBox();

        this.buttonOpen = new System.Windows.Forms.Button();

        this.statusStrip1 = new System.Windows.Forms.StatusStrip();

        this.listFiles = new System.Windows.Forms.ListBox();

        this.buttonOpenDirectory = new System.Windows.Forms.Button();

        this.buttonGetFile = new System.Windows.Forms.Button();

        this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();

        this.checkBoxBinary = new System.Windows.Forms.CheckBox();

        this.label2 = new System.Windows.Forms.Label();

        this.label3 = new System.Windows.Forms.Label();

        this.textUsername = new System.Windows.Forms.TextBox();

        this.textPassword = new System.Windows.Forms.TextBox();

        this.SuspendLayout();

        this.label1.AutoSize = true;

        this.label1.Location = new System.Drawing.Point(28, 31);

        this.label1.Size = new System.Drawing.Size(37, 13);

        this.label1.Text = "Server:";

        this.textServer.Location = new System.Drawing.Point(109, 31);

        this.textServer.Size = new System.Drawing.Size(146, 20);

        this.textServer.Text = "ftp://";

        this.buttonOpen.Location = new System.Drawing.Point(371, 31);

        this.buttonOpen.Size = new System.Drawing.Size(103, 23);

        this.buttonOpen.Text = "Open";

        this.buttonOpen.Click += new System.EventHandler(this.OnOpen);

        this.statusStrip1.LayoutStyle = System.Windows.Forms.ToolStripLayoutStyle.Table;

        this.statusStrip1.Location = new System.Drawing.Point(0, 0);

        this.statusStrip1.Size = new System.Drawing.Size(496, 18);

        this.listFiles.FormattingEnabled = true;

        this.listFiles.Location = new System.Drawing.Point(28, 149);

        this.listFiles.Size = new System.Drawing.Size(315, 160);

        this.listFiles.SelectedIndexChanged += new System.EventHandler(this.OnFileSelection);

        this.buttonOpenDirectory.Enabled = false;

        this.buttonOpenDirectory.Location = new System.Drawing.Point(371, 77);

        this.buttonOpenDirectory.Name = "buttonOpenDirectory";

        this.buttonOpenDirectory.Size = new System.Drawing.Size(103, 23);

        this.buttonOpenDirectory.Text = "Open Directory";

        this.buttonOpenDirectory.Click += new System.EventHandler(this.OnOpenDirectory);

        this.buttonGetFile.Enabled = false;

        this.buttonGetFile.Location = new System.Drawing.Point(371, 122);

        this.buttonGetFile.Size = new System.Drawing.Size(103, 23);

        this.buttonGetFile.Text = "Get File";

        this.buttonGetFile.Click += new System.EventHandler(this.OnDownloadFile);

        this.checkBoxBinary.AutoSize = true;

        this.checkBoxBinary.Checked = true;

        this.checkBoxBinary.CheckState = System.Windows.Forms.CheckState.Checked;

        this.checkBoxBinary.Location = new System.Drawing.Point(371, 190);

        this.checkBoxBinary.Size = new System.Drawing.Size(81, 17);

        this.checkBoxBinary.Text = "Binary Mode";

        this.label2.AutoSize = true;

        this.label2.Location = new System.Drawing.Point(28, 62);

        this.label2.Size = new System.Drawing.Size(54, 13);

        this.label2.Text = "Username:";

        this.label3.AutoSize = true;

        this.label3.Location = new System.Drawing.Point(28, 101);

        this.label3.Size = new System.Drawing.Size(52, 13);

        this.label3.Text = "Password:";

        this.textUsername.Location = new System.Drawing.Point(109, 62);

        this.textUsername.Size = new System.Drawing.Size(146, 20);

        this.textUsername.Text = "Anonymous";

        this.textPassword.Location = new System.Drawing.Point(109, 101);

        this.textPassword.PasswordChar = '?';

        this.textPassword.Size = new System.Drawing.Size(146, 20);

        this.textPassword.UseSystemPasswordChar = true;

        this.ClientSize = new System.Drawing.Size(496, 353);

        this.Controls.Add(this.textPassword);

        this.Controls.Add(this.textUsername);

        this.Controls.Add(this.label3);

        this.Controls.Add(this.label2);

        this.Controls.Add(this.checkBoxBinary);

        this.Controls.Add(this.buttonGetFile);

        this.Controls.Add(this.buttonOpenDirectory);

        this.Controls.Add(this.listFiles);

        this.Controls.Add(this.buttonOpen);

        this.Controls.Add(this.textServer);

        this.Controls.Add(this.label1);

        this.Text = "FTP Client";

        this.ResumeLayout(false);

        this.PerformLayout();



    }

    private System.Windows.Forms.Label label1;

    private System.Windows.Forms.TextBox textServer;

    private System.Windows.Forms.Button buttonOpen;

    private System.Windows.Forms.StatusStrip statusStrip1;

    private System.Windows.Forms.ListBox listFiles;

    private System.Windows.Forms.Button buttonOpenDirectory;

    private System.Windows.Forms.Button buttonGetFile;

    private System.Windows.Forms.SaveFileDialog saveFileDialog1;

    private System.Windows.Forms.CheckBox checkBoxBinary;

    private System.Windows.Forms.Label label2;

    private System.Windows.Forms.Label label3;

    private System.Windows.Forms.TextBox textUsername;

    private System.Windows.Forms.TextBox textPassword;

    [STAThread]

    static void Main() {

        Application.EnableVisualStyles();

        Application.Run(new FtpClientForm());

    }

}
FtpWebRequest.Method : FtpWebRequest « System.Net « C# / C Sharp by API
