Вы этой статье я покажу как можно создать клиентско серверное приложение для передачи файлов по сети.
Для начала напишем проект для передачи файла:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
using System.Net;
using System.Net.Sockets;
namespace File_Sender
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.TextBox text_IP;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.text_IP = new System.Windows.Forms.TextBox();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(48, 56);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(240, 20);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "";
this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged);
//
// button1
//
this.button1.Location = new System.Drawing.Point(296, 56);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(48, 23);
this.button1.TabIndex = 1;
this.button1.Text = "::";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Enabled = false;
this.button2.Location = new System.Drawing.Point(16, 152);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(128, 23);
this.button2.TabIndex = 2;
this.button2.Text = "Send The File To:";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// text_IP
//
this.text_IP.Location = new System.Drawing.Point(152, 152);
this.text_IP.Name = "text_IP";
this.text_IP.Size = new System.Drawing.Size(208, 20);
this.text_IP.TabIndex = 3;
this.text_IP.Text = "127.0.0.1";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(400, 266);
this.Controls.Add(this.text_IP);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox1);
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "File Sender - By Fadi Abdel-qader fadidotnet.org";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void button2_Click(object sender, System.EventArgs e)
{
FileStream fs = new FileStream(textBox1.Text,FileMode.Open);
byte[] buffer = new byte[fs.Length];
int len = (int)fs.Length;
fs.Read(buffer,0,len);
fs.Close();
BinaryFormatter br = new BinaryFormatter ();
TcpClient myclient = new TcpClient (text_IP.Text,7000);
NetworkStream myns = myclient.GetStream ();
br.Serialize (myns,FileName);
BinaryWriter mysw = new BinaryWriter (myns);
mysw.Write(buffer);
mysw.Close ();
myns.Close ();
myclient.Close ();
}
string FileName;
private void button1_Click(object sender, System.EventArgs e)
{
openFileDialog1.ShowDialog();
textBox1.Text = openFileDialog1.FileName;
FileInfo TheFile = new FileInfo(textBox1.Text); // Get The File Name
FileName = TheFile.Name;
}
private void textBox1_TextChanged(object sender, System.EventArgs e)
{
if (textBox1.Text.Length > 3) button2.Enabled = true; else button2.Enabled = false;
}
}
}
Теперь создадим проект для приема данный:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization.Formatters;
using System.IO;
using System.Net;
using System.Net.Sockets;
namespace File_Receiver
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.ListBox listBox1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.textBox1 = new System.Windows.Forms.TextBox();
this.listBox1 = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// label1
//
this.label1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));
this.label1.Location = new System.Drawing.Point(8, 8);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(160, 23);
this.label1.TabIndex = 0;
this.label1.Text = "Automatically Save to";
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(176, 8);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(176, 20);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "C:\\";
//
// listBox1
//
this.listBox1.Dock = System.Windows.Forms.DockStyle.Bottom;
this.listBox1.Location = new System.Drawing.Point(0, 48);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(408, 134);
this.listBox1.TabIndex = 2;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(408, 182);
this.Controls.Add(this.listBox1);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "File Receiver By Fadi Abdel-qader fadidotnet.org";
this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
NetworkStream myns;
TcpListener mytcpl;
Socket mysocket;
Thread myth;
BinaryReader bb;
void File_Receiver()
{
mytcpl = new TcpListener (7000);
mytcpl.Start ();
mysocket = mytcpl.AcceptSocket ();
myns = new NetworkStream (mysocket);
BinaryFormatter br = new BinaryFormatter ();
object op;
op= br.Deserialize (myns); // Deserialize the Object from Stream
bb = new BinaryReader (myns);
byte[] buffer = bb.ReadBytes(5000000);
FileStream fss = new FileStream(@textBox1.Text + (string) op, FileMode.CreateNew, FileAccess.Write);
fss.Write(buffer,0,buffer.Length);
fss.Close();
mytcpl.Stop();
listBox1.Items.Add ("Successfully Saved to: " + textBox1.Text + (string) op);
if (mysocket.Connected ==true)
{
while (true)
{
File_Receiver();
}
}
}
private void Form1_Load(object sender, System.EventArgs e)
{
myth= new Thread (new System.Threading .ThreadStart(File_Receiver)); // Start Thread Session
myth.Start ();
}
private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
myth.Abort ();
mytcpl.Stop ();
}
}
}
N
Как это работает:
- Сервер запускается и начинает слушать порт
5000. - Клиент подключается к серверу и отправляет файл
send_file.txt. - Сервер сохраняет файл как
received_file.txt.
Советы по улучшению:
- Добавьте протокол: имя файла, размер, подтверждения.
- Используйте
async/awaitдля асинхронной передачи. - Добавьте многопоточность для обработки нескольких клиентов.
- Реализуйте авторизацию и шифрование при передаче.
Вывод
Это базовый пример клиент-серверного взаимодействия для передачи файлов в .NET. Он легко расширяется и может служить фундаментом для создания более сложных систем обмена файлами и сетевых приложений.
Здравствуйте, у меня есть пара вопросов по отправке файла на другие компьютеры, как я могу связаться с вами, чтоб задать их?