form1.cs

Csharp实例编程百例.rar

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;

namespace EMailSender
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox textBox4;
		private System.Windows.Forms.TextBox textBox5;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		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 Form Designer generated code
		/// <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.label1 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.label4 = new System.Windows.Forms.Label();
			this.textBox4 = new System.Windows.Forms.TextBox();
			this.textBox5 = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(56, 16);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(48, 16);
			this.label1.TabIndex = 0;
			this.label1.Text = "From:";
			// 
			// textBox1
			// 
			this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.textBox1.Location = new System.Drawing.Point(96, 16);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(168, 21);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(56, 48);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(40, 16);
			this.label2.TabIndex = 2;
			this.label2.Text = "To:";
			// 
			// textBox2
			// 
			this.textBox2.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.textBox2.Location = new System.Drawing.Point(96, 48);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(168, 21);
			this.textBox2.TabIndex = 3;
			this.textBox2.Text = "";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(32, 80);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(56, 24);
			this.label3.TabIndex = 4;
			this.label3.Text = "Subject:";
			// 
			// textBox3
			// 
			this.textBox3.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.textBox3.Location = new System.Drawing.Point(96, 80);
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(168, 21);
			this.textBox3.TabIndex = 5;
			this.textBox3.Text = "";
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(16, 112);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(80, 32);
			this.label4.TabIndex = 6;
			this.label4.Text = "SMTP Server:";
			// 
			// textBox4
			// 
			this.textBox4.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.textBox4.Location = new System.Drawing.Point(96, 112);
			this.textBox4.Name = "textBox4";
			this.textBox4.Size = new System.Drawing.Size(168, 21);
			this.textBox4.TabIndex = 7;
			this.textBox4.Text = "";
			// 
			// textBox5
			// 
			this.textBox5.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right);
			this.textBox5.Location = new System.Drawing.Point(8, 192);
			this.textBox5.Multiline = true;
			this.textBox5.Name = "textBox5";
			this.textBox5.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.textBox5.Size = new System.Drawing.Size(328, 168);
			this.textBox5.TabIndex = 9;
			this.textBox5.Text = "";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(96, 160);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(64, 24);
			this.button1.TabIndex = 10;
			this.button1.Text = "Send";
			this.button1.Click += new System.EventHandler(this.SendBtn_click);
			// 
			// button2
			// 
			this.button2.Anchor = (System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right);
			this.button2.Location = new System.Drawing.Point(184, 160);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(56, 24);
			this.button2.TabIndex = 11;
			this.button2.Text = "Exit";
			this.button2.Click += new System.EventHandler(this.ExitBtn_click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(352, 374);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.button2,
																		  this.button1,
																		  this.textBox5,
																		  this.textBox4,
																		  this.label4,
																		  this.textBox3,
																		  this.label3,
																		  this.textBox2,
																		  this.label2,
																		  this.textBox1,
																		  this.label1});
			this.Name = "Form1";
			this.Text = "EmailSender";
			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 SendBtn_click(object sender, System.EventArgs e)
		{
			TcpClient tosmtpserver=new TcpClient(textBox4.Text,25);
			string SendString;
			byte[] BufferString;
			NetworkStream networkstream= tosmtpserver.GetStream();
			StreamReader streamreader=new StreamReader(networkstream);
			try
			{
				SendString="HELLO Server "+"\r\n";
				BufferString=System.Text.Encoding.ASCII.GetBytes(SendString.ToCharArray());
				networkstream.Write(BufferString,0,BufferString.Length);
	
				SendString="MAIL FROM: "+" < "+textBox1.Text+" > "+"\r\n";
				BufferString=System.Text.Encoding.ASCII.GetBytes(SendString.ToCharArray());
				networkstream.Write(BufferString,0,BufferString.Length);

				SendString="RCPT TO: "+" < "+textBox2.Text+" > "+"\r\n";
				BufferString=System.Text.Encoding.ASCII.GetBytes(SendString.ToCharArray());
				networkstream.Write(BufferString,0,BufferString.Length);

				SendString="DATA "+"\r\n";
				BufferString=System.Text.Encoding.ASCII.GetBytes(SendString.ToCharArray());
				networkstream.Write(BufferString,0,BufferString.Length);

				SendString="SUBJECT: "+textBox3.Text+"\r\n"+textBox5.Text+"\r\n"+"."+"\r\n";
				BufferString=System.Text.Encoding.Default.GetBytes(SendString.ToCharArray());
				networkstream.Write(BufferString,0,BufferString.Length);

				SendString="QUIT"+"\r\n";
				BufferString=System.Text.Encoding.ASCII.GetBytes(SendString.ToCharArray());
				networkstream.Write(BufferString,0,BufferString.Length);

				networkstream.Close();
				streamreader.Close();
			}
			catch(InvalidOperationException err)
			{MessageBox.Show("{0}",err.ToString());}
		}

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