Сайт о программировании, с примерами программ на C# Java

Паттерн Шаблонный Метод

Паттерн Шаблонный Метода задает скелет алгоритма в методе, оставляя определение реализации некоторых шагов субклассам. Субклассы могут переопределять некоторые части алгоритма без изменения его структуры. Основной задаче паттерна является создание шаблона алгоритма, то есть метод определяющий алгоритм в виде последовательности шагов. Один или несколько шагов определяются ввиде абстрактных методов, реализуемых субклассами. Таким образом гарантируется неизменность структуры […]

Как рассчитать возраст по дате рождения на C#?

Приведу небольшой фрагмент кода, который позволяет по вводу даты, рассчитать ваш возраст.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;

namespace Work
{
    class Program
    {
        static void Main(string[] args)
        {
            var date=  CalculateAge(new DateTime(1980, 12, 22));
            Console.WriteLine($"Ваш возраст: {date}");
            Console.ReadKey();
        }

        public static int CalculateAge(DateTime BirthDate)
        {
            int YearsPassed = DateTime.Now.Year - BirthDate.Year;
            if (DateTime.Now.Month < BirthDate.Month || (DateTime.Now.Month == BirthDate.Month && DateTime.Now.Day < BirthDate.Day))
            {
                YearsPassed--;
            }
            return YearsPassed;
        }
    }
}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

namespace Work

{

class Program

{

static void Main(string[] args)

{

var date= CalculateAge(new DateTime(1980, 12, 22));

Console.WriteLine($"Ваш возраст: {date}");

Console.ReadKey();

}

public static int CalculateAge(DateTime BirthDate)

{

int YearsPassed = DateTime.Now.Year - BirthDate.Year;

if (DateTime.Now.Month < BirthDate.Month || (DateTime.Now.Month == BirthDate.Month && DateTime.Now.Day < BirthDate.Day))

{

YearsPassed--;

}

return YearsPassed;

}

Как проверить подключение к интернету на C#?

Проверка интернет-соединения не такая уж тривиальная задача как может показаться, и для этого существует много способов, но рассмотрим самый простой. Мы отправим запрос к сайту google и, если он вернет ответ, соответственно подключение к интернету имеется, в обратном случаи интернет отсутствует.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;

namespace Work
{
    class Program
    {
        static void Main(string[] args)
        {
           ConnectionAvailable("http://www.google.com").ToString();
           Console.ReadKey();
        }


        public static bool ConnectionAvailable(string strServer)
        {
            try
            {
                HttpWebRequest httpReq = (HttpWebRequest)HttpWebRequest.Create(strServer);
                HttpWebResponse httpWeb = (HttpWebResponse)httpReq.GetResponse();

                if (HttpStatusCode.OK == httpWeb.StatusCode)
                {
                    // HTTP = 200 - Интернет безусловно есть!
                    httpWeb.Close();
                    Console.WriteLine("Соединения с интернетом присутствует");
                    return true;
                }
                else
                {
                    // сервер вернул отрицательный ответ, возможно что инета нет
                    httpWeb.Close();
                    Console.WriteLine("Соединения с интернетом отсутствует, либо трафик сети перегружен");
                    return false;
                }
            }
            catch (WebException)
            {
                Console.WriteLine("Соединения с интернетом отсутствует");
                return false;
            }
        }
    }
}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

namespace Work

{

class Program

{

static void Main(string[] args)

{

ConnectionAvailable("http://www.google.com").ToString();

Console.ReadKey();

}

public static bool ConnectionAvailable(string strServer)

{

try

{

HttpWebRequest httpReq = (HttpWebRequest)HttpWebRequest.Create(strServer);

HttpWebResponse httpWeb = (HttpWebResponse)httpReq.GetResponse();

if (HttpStatusCode.OK == httpWeb.StatusCode)

{

// HTTP = 200 - Интернет безусловно есть!

httpWeb.Close();

Console.WriteLine("Соединения с интернетом присутствует");

return true;

}

else

{

// сервер вернул отрицательный ответ, возможно что инета нет

httpWeb.Close();

Console.WriteLine("Соединения с интернетом отсутствует, либо трафик сети перегружен");

return false;

}

catch (WebException)

{

Console.WriteLine("Соединения с интернетом отсутствует");

return false;

}

Криптография и защита на C#

В этом примере мы зашифруем сообщение с помощью RSA, и проверим его на соответствие вводимого сообщения, путем сверки цифровой подписи. Для этого создадим вспомогательные классы для работы:

using System; 
using System.Security.Cryptography; 
using System.Text; 

public class MD5HashHelper 
{ 

	public byte[] GetHash(string message) 
	{ 
		byte[] data; 
		data = UTF8Encoding.ASCII.GetBytes(message); 
		MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); 
		return md5.ComputeHash(data, 0, data.Length); 
	} 

	public bool VerifyHash(string message, byte[] hash) 
	{ 
		byte[] data; 
		data = UTF8Encoding.ASCII.GetBytes(message); 
		MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); 
		byte[] hashTemp = md5.ComputeHash(data, 0, data.Length); 

		for (Int32 counter = 0; counter <= hash.Length - 1; counter += 1) 
		{
			if (hash[counter] != hashTemp[counter]) 
			{ 
				return false; 
			} 
		} 
		return true; 
	} 
}

public class DigitalSignatureHelper 
{ 
	private RSAParameters m_public; 

	public byte[] CreateSignature(byte[] hash) 
	{ 
		RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); 
		RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA); 
		RSAFormatter.SetHashAlgorithm("MD5"); 
		m_public = RSA.ExportParameters(false); 
		return RSAFormatter.CreateSignature(hash); 
	} 

	public bool VerifySignature(byte[] hash, byte[] signedhash) 
	{ 
		RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); 
		RSAParameters RSAKeyInfo = new RSAParameters(); 
		RSAKeyInfo.Modulus = m_public.Modulus; 
		RSAKeyInfo.Exponent = m_public.Exponent; 
		RSA.ImportParameters(RSAKeyInfo); 
		RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA); 
		RSADeformatter.SetHashAlgorithm("MD5"); 
		return RSADeformatter.VerifySignature(hash, signedhash); 
	} 
}

using System;

using System.Security.Cryptography;

using System.Text;

public class MD5HashHelper

{

public byte[] GetHash(string message)

{

byte[] data;

data = UTF8Encoding.ASCII.GetBytes(message);

MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();

return md5.ComputeHash(data, 0, data.Length);

}

public bool VerifyHash(string message, byte[] hash)

{

byte[] data;

data = UTF8Encoding.ASCII.GetBytes(message);

MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();

byte[] hashTemp = md5.ComputeHash(data, 0, data.Length);

for (Int32 counter = 0; counter <= hash.Length - 1; counter += 1)

{

if (hash[counter] != hashTemp[counter])

{

return false;

}

return true;

}

public class DigitalSignatureHelper

{

private RSAParameters m_public;

public byte[] CreateSignature(byte[] hash)

{

RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);

RSAFormatter.SetHashAlgorithm("MD5");

m_public = RSA.ExportParameters(false);

return RSAFormatter.CreateSignature(hash);

}

public bool VerifySignature(byte[] hash, byte[] signedhash)

{

RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();

RSAParameters RSAKeyInfo = new RSAParameters();

RSAKeyInfo.Modulus = m_public.Modulus;

RSAKeyInfo.Exponent = m_public.Exponent;

RSA.ImportParameters(RSAKeyInfo);

RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);

RSADeformatter.SetHashAlgorithm("MD5");

return RSADeformatter.VerifySignature(hash, signedhash);

}

И код формы:

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace DigitalSignature_Example
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		internal System.Windows.Forms.Button Button2;
		internal System.Windows.Forms.Button Button1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		/// <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.Button2 = new System.Windows.Forms.Button();
			this.Button1 = new System.Windows.Forms.Button();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// Button2
			// 
			this.Button2.Location = new System.Drawing.Point(224, 24);
			this.Button2.Name = "Button2";
			this.Button2.Size = new System.Drawing.Size(112, 23);
			this.Button2.TabIndex = 5;
			this.Button2.Text = "Generate Signature";
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			// 
			// Button1
			// 
			this.Button1.Location = new System.Drawing.Point(224, 64);
			this.Button1.Name = "Button1";
			this.Button1.Size = new System.Drawing.Size(112, 23);
			this.Button1.TabIndex = 4;
			this.Button1.Text = "Verify Signature";
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(120, 24);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(96, 20);
			this.textBox1.TabIndex = 6;
			this.textBox1.Text = "My Signature";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(120, 64);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(96, 20);
			this.textBox2.TabIndex = 7;
			this.textBox2.Text = "My Signature";
			// 
			// label1
			// 
			this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));
			this.label1.Location = new System.Drawing.Point(8, 24);
			this.label1.Name = "label1";
			this.label1.TabIndex = 8;
			this.label1.Text = "Set Signature";
			// 
			// label2
			// 
			this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));
			this.label2.Location = new System.Drawing.Point(8, 64);
			this.label2.Name = "label2";
			this.label2.TabIndex = 9;
			this.label2.Text = "Verify Signature";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(344, 110);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.Button2);
			this.Controls.Add(this.Button1);
			this.MaximizeBox = false;
			this.Name = "Form1";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Digital Signature - By Fadi Abdel-qader";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		DigitalSignatureHelper ds = new DigitalSignatureHelper(); 
		byte[] hash1; 
		byte[] hash2; 
		byte[] signedhash;

		private void Button2_Click(object sender, System.EventArgs e)
		{
			try 
			{
				MD5HashHelper md5 = new MD5HashHelper(); 
				hash1 = md5.GetHash(textBox1.Text); 
				signedhash = ds.CreateSignature(hash1); 
				MessageBox.Show("Подпись создана успешно!");
			}
			catch(Exception ex){MessageBox.Show(ex.Message);}
			}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			try
			{
				MD5HashHelper md5 = new MD5HashHelper();
				hash2 = md5.GetHash(textBox2.Text); 

				if (ds.VerifySignature(hash2, signedhash)) 
				{ 
					MessageBox.Show("Подписи проверены Успешно!"); 
				} 
				else 
				{ 
					MessageBox.Show("Не удалось проверить подписи!"); 
				}
			}
			catch(Exception ex){MessageBox.Show(ex.Message);}
		}
	}
}

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using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

namespace DigitalSignature_Example

{

/// <summary>

/// Summary description for Form1.

/// </summary>

public class Form1 : System.Windows.Forms.Form

{

internal System.Windows.Forms.Button Button2;

internal System.Windows.Forms.Button Button1;

private System.Windows.Forms.TextBox textBox1;

private System.Windows.Forms.TextBox textBox2;

private System.Windows.Forms.Label label1;

private System.Windows.Forms.Label label2;

/// <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.Button2 = new System.Windows.Forms.Button();

this.Button1 = new System.Windows.Forms.Button();

this.textBox1 = new System.Windows.Forms.TextBox();

this.textBox2 = new System.Windows.Forms.TextBox();

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

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

this.SuspendLayout();

// Button2

this.Button2.Location = new System.Drawing.Point(224, 24);

this.Button2.Name = "Button2";

this.Button2.Size = new System.Drawing.Size(112, 23);

this.Button2.TabIndex = 5;

this.Button2.Text = "Generate Signature";

this.Button2.Click += new System.EventHandler(this.Button2_Click);

// Button1

this.Button1.Location = new System.Drawing.Point(224, 64);

this.Button1.Name = "Button1";

this.Button1.Size = new System.Drawing.Size(112, 23);

this.Button1.TabIndex = 4;

this.Button1.Text = "Verify Signature";

this.Button1.Click += new System.EventHandler(this.Button1_Click);

// textBox1

this.textBox1.Location = new System.Drawing.Point(120, 24);

this.textBox1.Name = "textBox1";

this.textBox1.Size = new System.Drawing.Size(96, 20);

this.textBox1.TabIndex = 6;

this.textBox1.Text = "My Signature";

// textBox2

this.textBox2.Location = new System.Drawing.Point(120, 64);

this.textBox2.Name = "textBox2";

this.textBox2.Size = new System.Drawing.Size(96, 20);

this.textBox2.TabIndex = 7;

this.textBox2.Text = "My Signature";

// label1

this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));

this.label1.Location = new System.Drawing.Point(8, 24);

this.label1.Name = "label1";

this.label1.TabIndex = 8;

this.label1.Text = "Set Signature";

// label2

this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(178)));

this.label2.Location = new System.Drawing.Point(8, 64);

this.label2.Name = "label2";

this.label2.TabIndex = 9;

this.label2.Text = "Verify Signature";

// Form1

this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);

this.ClientSize = new System.Drawing.Size(344, 110);

this.Controls.Add(this.label2);

this.Controls.Add(this.label1);

this.Controls.Add(this.textBox2);

this.Controls.Add(this.textBox1);

this.Controls.Add(this.Button2);

this.Controls.Add(this.Button1);

this.MaximizeBox = false;

this.Name = "Form1";

this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;

this.Text = "Digital Signature - By Fadi Abdel-qader";

this.ResumeLayout(false);

}

#endregion

/// <summary>

/// The main entry point for the application.

/// </summary>

[STAThread]

static void Main()

{

Application.Run(new Form1());

}

DigitalSignatureHelper ds = new DigitalSignatureHelper();

byte[] hash1;

byte[] hash2;

byte[] signedhash;

private void Button2_Click(object sender, System.EventArgs e)

{

try

{

MD5HashHelper md5 = new MD5HashHelper();

hash1 = md5.GetHash(textBox1.Text);

signedhash = ds.CreateSignature(hash1);

MessageBox.Show("Подпись создана успешно!");

}

catch(Exception ex){MessageBox.Show(ex.Message);}

}

private void Button1_Click(object sender, System.EventArgs e)

{

try

{

MD5HashHelper md5 = new MD5HashHelper();

hash2 = md5.GetHash(textBox2.Text);

if (ds.VerifySignature(hash2, signedhash))

{

MessageBox.Show("Подписи проверены Успешно!");

}

else

{

MessageBox.Show("Не удалось проверить подписи!");

}

catch(Exception ex){MessageBox.Show(ex.Message);}

}

Пример приема и передачи файла по сети C#

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; 

		}
	}
}

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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 ();
		}
	}
}

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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 ();

}

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