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   源码介绍

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Text;
namespace Notify
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.NotifyIcon notifyIcon1;
		private System.Windows.Forms.ContextMenu contextMenu1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Timer timer1;
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Label label6;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox4;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.TextBox textBox5;
		private System.ComponentModel.IContainer components;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
			this.notifyIcon1 = new System.Windows.Forms.NotifyIcon(this.components);
			this.contextMenu1 = new System.Windows.Forms.ContextMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.menuItem5 = new System.Windows.Forms.MenuItem();
			this.button2 = new System.Windows.Forms.Button();
			this.button1 = new System.Windows.Forms.Button();
			this.timer1 = new System.Windows.Forms.Timer(this.components);
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.textBox5 = new System.Windows.Forms.TextBox();
			this.label6 = new System.Windows.Forms.Label();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.textBox4 = new System.Windows.Forms.TextBox();
			this.label4 = new System.Windows.Forms.Label();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();
			// 
			// notifyIcon1
			// 
			this.notifyIcon1.ContextMenu = this.contextMenu1;
			this.notifyIcon1.Icon = ((System.Drawing.Icon)(resources.GetObject("notifyIcon1.Icon")));
			this.notifyIcon1.Text = "邮件检查程序";
			this.notifyIcon1.Visible = true;
			// 
			// contextMenu1
			// 
			this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																						 this.menuItem1,
																						 this.menuItem2,
																						 this.menuItem3,
																						 this.menuItem4,
																						 this.menuItem5});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.Text = "设置(&S)";
			this.menuItem1.Click  = new System.EventHandler(this.menuItem1_Click);
			// 
			// menuItem2
			// 
			this.menuItem2.Index = 1;
			this.menuItem2.Text = "-";
			// 
			// menuItem3
			// 
			this.menuItem3.Index = 2;
			this.menuItem3.Text = "检查(&C)";
			this.menuItem3.Click  = new System.EventHandler(this.menuItem3_Click);
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 3;
			this.menuItem4.Text = "-";
			// 
			// menuItem5
			// 
			this.menuItem5.Index = 4;
			this.menuItem5.Text = "退出(&E)";
			this.menuItem5.Click  = new System.EventHandler(this.menuItem5_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(200, 152);
			this.button2.Name = "button2";
			this.button2.TabIndex = 5;
			this.button2.Text = "检查";
			this.button2.Click  = new System.EventHandler(this.button2_Click);
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(56, 152);
			this.button1.Name = "button1";
			this.button1.TabIndex = 4;
			this.button1.Text = "隐藏";
			this.button1.Click  = new System.EventHandler(this.button1_Click);
			// 
			// timer1
			// 
			this.timer1.Interval = 30000;
			this.timer1.Tick  = new System.EventHandler(this.timer1_Tick);
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.textBox5);
			this.groupBox1.Controls.Add(this.label6);
			this.groupBox1.Controls.Add(this.textBox3);
			this.groupBox1.Controls.Add(this.label3);
			this.groupBox1.Controls.Add(this.textBox4);
			this.groupBox1.Controls.Add(this.label4);
			this.groupBox1.Controls.Add(this.textBox2);
			this.groupBox1.Controls.Add(this.label2);
			this.groupBox1.Controls.Add(this.textBox1);
			this.groupBox1.Controls.Add(this.label1);
			this.groupBox1.Location = new System.Drawing.Point(8, 8);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(328, 136);
			this.groupBox1.TabIndex = 3;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "邮件检查设置";
			// 
			// textBox5
			// 
			this.textBox5.Location = new System.Drawing.Point(120, 112);
			this.textBox5.Name = "textBox5";
			this.textBox5.Size = new System.Drawing.Size(192, 21);
			this.textBox5.TabIndex = 13;
			this.textBox5.Text = "";
			// 
			// label6
			// 
			this.label6.Location = new System.Drawing.Point(16, 112);
			this.label6.Name = "label6";
			this.label6.Size = new System.Drawing.Size(96, 16);
			this.label6.TabIndex = 12;
			this.label6.Text = "间隔时间(ms)：";
			// 
			// textBox3
			// 
			this.textBox3.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
			this.textBox3.Location = new System.Drawing.Point(120, 64);
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(192, 21);
			this.textBox3.TabIndex = 11;
			this.textBox3.Text = "";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(16, 92);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(88, 16);
			this.label3.TabIndex = 10;
			this.label3.Text = "密码：";
			// 
			// textBox4
			// 
			this.textBox4.Location = new System.Drawing.Point(120, 88);
			this.textBox4.Name = "textBox4";
			this.textBox4.PasswordChar = '*';
			this.textBox4.Size = new System.Drawing.Size(192, 21);
			this.textBox4.TabIndex = 9;
			this.textBox4.Text = "";
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(16, 68);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(112, 16);
			this.label4.TabIndex = 8;
			this.label4.Text = "用户名：";
			// 
			// textBox2
			// 
			this.textBox2.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
			this.textBox2.Location = new System.Drawing.Point(120, 40);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(192, 21);
			this.textBox2.TabIndex = 7;
			this.textBox2.Text = "";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(16, 48);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(88, 16);
			this.label2.TabIndex = 6;
			this.label2.Text = "通信端口号：";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(120, 16);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(192, 21);
			this.textBox1.TabIndex = 5;
			this.textBox1.Text = "";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 24);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(112, 16);
			this.label1.TabIndex = 4;
			this.label1.Text = "邮件服务器地址：";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(344, 182);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.groupBox1);
			this.MaximizeBox = false;
			this.Name = "Form1";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "演示检查邮件";
			this.WindowState = System.Windows.Forms.FormWindowState.Minimized;
			this.Load  = new System.EventHandler(this.Form1_Load);
			this.groupBox1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{			
			Application.Run(new Form1());			
		}
		
		private void WriteToNetStream(ref NetworkStream MyStream, string MyCommand)
		{//处理邮件命令
			string MySendCommand = MyCommand   "\r\n";
			Byte[] SendArray = Encoding.ASCII.GetBytes(MySendCommand.ToCharArray());
			MyStream.Write(SendArray, 0, SendArray.Length);
		}
		
		private String ReadFromNetStream(ref NetworkStream MyStream)
		{//读取邮件信息
			StringBuilder MyReceived= new StringBuilder();
			StreamReader MyStreamReader= new StreamReader(MyStream);
			String MyLine = MyStreamReader.ReadLine();
			while(MyLine==null || MyLine.Length==0)
			{
				MyLine = MyStreamReader.ReadLine();
			}
			MyReceived.Append(MyLine);
			if(MyStreamReader.Peek()!=-1)
			{
				while ((MyLine=MyStreamReader.ReadLine())!=null) 
				{	
					MyReceived.Append(MyLine);
				}
			}
			return MyReceived.ToString();
		}
		//检查流中是否有错误
		private void checkForError(String MyMessage)
		{
			if (MyMessage.IndexOf(" OK") == -1)
				throw new Exception("ERROR - . Recieved: "   MyMessage);
		}

	
		private void button1_Click(object sender, System.EventArgs e)
		{//隐藏程序界面
			this.WindowState=FormWindowState.Minimized;
			this.Hide();
		}

		private void menuItem5_Click(object sender, System.EventArgs e)
		{//退出
			this.Close();
		}

		private void menuItem1_Click(object sender, System.EventArgs e)
		{//设置
			this.Show();
			this.WindowState=FormWindowState.Normal;
			
		}
		private void button2_Click(object sender, System.EventArgs e)
		{//检查邮件
			if(this.textBox1.Text==""|this.textBox2.Text==""|
				this.textBox3.Text==""|this.textBox4.Text==""|
				this.textBox5.Text=="")
			{
				MessageBox.Show("请设置邮件服务器信息！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
				return;
			}
			TcpClient MyClient = new TcpClient();
			try
			{
				MyClient.Connect(this.textBox1.Text,Int32.Parse(this.textBox2.Text));
			}
			catch(Exception Err)
			{
				MessageBox.Show("不能连接POP3服务器 " Err.Message,"信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
			}
			try
			{
				NetworkStream MyStream = MyClient.GetStream();
				if(MyStream == null)
				{
					throw new Exception("没有邮件信息");
				}
				string MailMessage=ReadFromNetStream(ref MyStream);			
				checkForError(MailMessage);
				//发送用户信息
				WriteToNetStream(ref MyStream, "USER "   this.textBox3.Text);
				MailMessage=ReadFromNetStream(ref MyStream);
				checkForError(MailMessage);
				//发送密码信息
				WriteToNetStream(ref MyStream, "PASS "   this.textBox4.Text);
				MailMessage=ReadFromNetStream(ref MyStream);
				checkForError(MailMessage);
			
				WriteToNetStream(ref MyStream, "STAT");

				string MyMessage=ReadFromNetStream(ref MyStream);
				checkForError(MyMessage);			
				///处理邮件信息
				string[] TotalStat=MyMessage.Split(new char[] {' '});			
				int count=Int32.Parse(TotalStat[1]);
				int totalSize=Int32.Parse(TotalStat[2]);
				this.notifyIcon1.Text="您有" count.ToString() "封邮件";
				MyStream.Close();
				MyClient.Close();
				this.timer1.Interval=Int32.Parse(this.textBox5.Text);
			}
			catch(Exception Err)
			{
				MessageBox.Show("接收邮件信息错误！" Err.Message,"信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
			}
		}
		private void menuItem3_Click(object sender, System.EventArgs e)
		{//检查
			button2_Click(null,null);            		
		}

		private void timer1_Tick(object sender, System.EventArgs e)
		{//检查邮件信息
			button2_Click(null,null);            			
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{//隐藏程序界面
			this.Visible=false;
		}	
	}
}