用Socket发送电子邮件

using  System; using  System.Web; using  System.Web.Mail; using  System.Text; using  System.Net; using  System.Net.Sockets; namespace  Email ... {    /**//// <summary>    /// Class1 的摘要说明。    /// </summary>    public class SendEmail    ...{        public string FromEmail="";        public string ToEmail="";        public string Title="";        public string Content="";        public string smtpserver="";        public string errorstr="";             public SendEmail()        ...{                            }        public SendEmail(string _FromEmail,string _ToEmail,string _Title,string _Content, string _smtpserver)        ...{            FromEmail=_FromEmail;            ToEmail=_ToEmail;            Title=_Title;            Content=_Content;            smtpserver=_smtpserver;        }        public bool send()        ...{                        bool flg;            MailMessage Message=null;            Message = new MailMessage();            Message.BodyEncoding = Encoding.Default;            Message.BodyFormat = MailFormat.Html;            Message.Subject=Title;            Message.From = FromEmail;                        Message.To = ToEmail;            Message.Body  =Content.ToString();            try            ...{                            SmtpMail.SmtpServer = smtpserver;                                SmtpMail.Send(Message);                flg=true;                    }            catch(Exception e)            ...{                errorstr=e.ToString();                flg=false;            }                return flg;        }         public bool send2()  //发送电子邮件        ...{            bool flg;            Socket s = null;            IPAddress Ip;            IPEndPoint hostEndPoint;                        string sIp=smtpserver;            int conPort = 25;            string Cmd1="", Cmd2="", Cmd3="", Cmd4="", Cmd5="",  Cmd6="",  Cmd7="";                        Byte[] PostBytes = new Byte[128];            Byte[] RecvBytes = new Byte[256];            string strRetPage = null;            s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);            Ip = IPAddress.Parse(sIp);             hostEndPoint = new IPEndPoint(Ip,conPort);            Cmd1="Helo ";            Cmd2="mail from:"+ FromEmail +" ";                        Cmd3="rcpt to:"+ToEmail +" ";            Cmd4="data ";            string KK;            KK="MIME-Version: 1.0"+" ";            KK+="Content-Type: multipart/alternative;"+" ";            KK+="    boundary="----=_NextPart_000_000D_01C5B928.9630AD10""+" ";            KK+="X-Mailer: Microsoft CDO for Windows 2000"+" ";            KK+="Content-Class: urn:content-classes:message"+" ";            KK+="X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506"+" ";            KK+=" ";            KK+="------=_NextPart_000_000D_01C5B928.9630AD10"+" ";            KK+="Content-Type: text/html;"+" ";            KK+="    charset="gb2312""+" ";            KK+=" ";            KK+=Content+" ";                KK+=" ";            KK+="------=_NextPart_000_000D_01C5B928.9630AD10--"+" ";                        KK=KK.Replace(" . ",".");            string KK2;            KK2="From: <"+FromEmail+">"+" ";            KK2+="To: <"+ToEmail+">"+" ";            Cmd5=KK2+"Subject:"+Title+" "+KK;                        Cmd6=" . ";            Cmd7="quit ";                                s.Connect(hostEndPoint);            if (!s.Connected)            ...{                                    flg=false;            }            Encoding ASCII = Encoding.ASCII;            Encoding DEFAU = Encoding.Default;            try            ...{                PostBytes =  ASCII.GetBytes(Cmd1);                s.Send(PostBytes, PostBytes.Length, 0);                    Int32 bytes = s.Receive(RecvBytes, RecvBytes.Length, 0);                strRetPage = DEFAU.GetString(RecvBytes, 0, bytes);                        PostBytes =  ASCII.GetBytes(Cmd2);                s.Send(PostBytes, PostBytes.Length, 0);                bytes = s.Receive(RecvBytes, RecvBytes.Length, 0);                strRetPage = DEFAU.GetString(RecvBytes, 0, bytes);                PostBytes =  ASCII.GetBytes(Cmd3);                s.Send(PostBytes, PostBytes.Length, 0);                bytes = s.Receive(RecvBytes, RecvBytes.Length, 0);                strRetPage = DEFAU.GetString(RecvBytes, 0, bytes);                PostBytes =  ASCII.GetBytes(Cmd4);                s.Send(PostBytes, PostBytes.Length, 0);                bytes = s.Receive(RecvBytes, RecvBytes.Length, 0);                strRetPage = DEFAU.GetString(RecvBytes, 0, bytes);                PostBytes = DEFAU.GetBytes(Cmd5);                s.Send(PostBytes, PostBytes.Length, 0);                                            PostBytes =  ASCII.GetBytes(Cmd6);                s.Send(PostBytes, PostBytes.Length, 0);                bytes = s.Receive(RecvBytes, RecvBytes.Length, 0);                strRetPage = DEFAU.GetString(RecvBytes, 0, bytes);                PostBytes =  ASCII.GetBytes(Cmd7);                s.Send(PostBytes, PostBytes.Length, 0);                bytes = s.Receive(RecvBytes, RecvBytes.Length, 0);                strRetPage = DEFAU.GetString(RecvBytes, 0, bytes);                s.Close();                flg=true;            }            catch(Exception e)            ...{                errorstr=e.ToString();                flg=false;            }            return flg;        }    }}

 

 

调用方法：

 

using  System; using  System.Drawing; using  System.Collections; using  System.ComponentModel; using  System.Windows.Forms; using  System.Data; namespace  testMail ... {    /**//// <summary>    /// Form1 的摘要说明。    /// </summary>    public class Form1 : System.Windows.Forms.Form    ...{        private System.Windows.Forms.TextBox textBox1;        private System.Windows.Forms.TextBox textBox2;        private System.Windows.Forms.Label label1;        private System.Windows.Forms.Label label2;        private System.Windows.Forms.TextBox textBox4;        private System.Windows.Forms.Label label3;        private System.Windows.Forms.Label label4;        private System.Windows.Forms.TextBox textBox5;        private System.Windows.Forms.Label label5;        private System.Windows.Forms.Label label6;        private System.Windows.Forms.Button button2;        private System.Windows.Forms.TextBox textBox3;        private System.Windows.Forms.RadioButton radioButton1;        private System.Windows.Forms.RadioButton radioButton2;        /**//// <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 );        }        Windows 窗体设计器生成的代码#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.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.textBox4 = new System.Windows.Forms.TextBox();            this.label3 = new System.Windows.Forms.Label();            this.label4 = new System.Windows.Forms.Label();            this.textBox5 = new System.Windows.Forms.TextBox();            this.label5 = new System.Windows.Forms.Label();            this.label6 = new System.Windows.Forms.Label();            this.button2 = new System.Windows.Forms.Button();            this.textBox3 = new System.Windows.Forms.TextBox();            this.radioButton1 = new System.Windows.Forms.RadioButton();            this.radioButton2 = new System.Windows.Forms.RadioButton();            this.SuspendLayout();            //             // textBox1            //             this.textBox1.Location = new System.Drawing.Point(72, 32);            this.textBox1.Name = "textBox1";            this.textBox1.Size = new System.Drawing.Size(160, 21);            this.textBox1.TabIndex = 0;            this.textBox1.Text = "test@hx2004.com";            //             // textBox2            //             this.textBox2.Location = new System.Drawing.Point(72, 64);            this.textBox2.Name = "textBox2";            this.textBox2.Size = new System.Drawing.Size(104, 21);            this.textBox2.TabIndex = 1;            this.textBox2.Text = "218.97.193.82";            //             // label1            //             this.label1.Location = new System.Drawing.Point(16, 32);            this.label1.Name = "label1";            this.label1.Size = new System.Drawing.Size(56, 16);            this.label1.TabIndex = 4;            this.label1.Text = "发件人：";            //             // label2            //             this.label2.Location = new System.Drawing.Point(256, 32);            this.label2.Name = "label2";            this.label2.Size = new System.Drawing.Size(56, 16);            this.label2.TabIndex = 6;            this.label2.Text = "收件人：";            //             // textBox4            //             this.textBox4.Location = new System.Drawing.Point(320, 32);            this.textBox4.Name = "textBox4";            this.textBox4.Size = new System.Drawing.Size(160, 21);            this.textBox4.TabIndex = 5;            this.textBox4.Text = "hch@szdomain.com ";            //             // label3            //             this.label3.Location = new System.Drawing.Point(16, 56);            this.label3.Name = "label3";            this.label3.Size = new System.Drawing.Size(56, 32);            this.label3.TabIndex = 7;            this.label3.Text = "发送邮件服务器：";            //             // label4            //             this.label4.Location = new System.Drawing.Point(192, 64);            this.label4.Name = "label4";            this.label4.Size = new System.Drawing.Size(40, 16);            this.label4.TabIndex = 9;            this.label4.Text = "标题：";            //             // textBox5            //             this.textBox5.Location = new System.Drawing.Point(248, 64);            this.textBox5.Name = "textBox5";            this.textBox5.Size = new System.Drawing.Size(160, 21);            this.textBox5.TabIndex = 8;            this.textBox5.Text = "华夏OnLine欢庆中秋";            //             // label5            //             this.label5.Location = new System.Drawing.Point(16, 96);            this.label5.Name = "label5";            this.label5.Size = new System.Drawing.Size(56, 16);            this.label5.TabIndex = 10;            this.label5.Text = "内容：";            //             // label6            //             this.label6.Location = new System.Drawing.Point(24, 336);            this.label6.Name = "label6";            this.label6.Size = new System.Drawing.Size(528, 24);            this.label6.TabIndex = 11;            //             // button2            //             this.button2.Location = new System.Drawing.Point(432, 64);            this.button2.Name = "button2";            this.button2.Size = new System.Drawing.Size(88, 24);            this.button2.TabIndex = 12;            this.button2.Text = "发送邮件";            this.button2.Click += new System.EventHandler(this.button2_Click);            //             // textBox3            //             this.textBox3.AcceptsReturn = true;            this.textBox3.Location = new System.Drawing.Point(16, 120);            this.textBox3.Multiline = true;            this.textBox3.Name = "textBox3";            this.textBox3.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;            this.textBox3.Size = new System.Drawing.Size(528, 208);            this.textBox3.TabIndex = 13;            this.textBox3.Text = @"<HTML>    <HEAD>        <title>华夏OnLine欢庆中秋</title>        <meta http-equiv=""Content-Language"" content=""zh-cn""><meta http-equiv=""Content-Type"" content=""text/html; charset=gb2312"">            </HEAD>    <body>         海风 从《华夏 Online》 中文官方网站 (www.hx2004.com) 给您寄来了一张精美的贺卡和一份中秋的思念与祝福 ！ </span>            </body></HTML>";            //             // radioButton1            //             this.radioButton1.Location = new System.Drawing.Point(72, 8);            this.radioButton1.Name = "radioButton1";            this.radioButton1.Size = new System.Drawing.Size(80, 16);            this.radioButton1.TabIndex = 14;            this.radioButton1.Text = "组件方式";            //             // radioButton2            //             this.radioButton2.Checked = true;            this.radioButton2.Location = new System.Drawing.Point(168, 8);            this.radioButton2.Name = "radioButton2";            this.radioButton2.Size = new System.Drawing.Size(96, 16);            this.radioButton2.TabIndex = 15;            this.radioButton2.TabStop = true;            this.radioButton2.Text = "Socket方式";            //             // Form1            //             this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);            this.ClientSize = new System.Drawing.Size(560, 365);            this.Controls.Add(this.radioButton2);            this.Controls.Add(this.radioButton1);            this.Controls.Add(this.textBox3);            this.Controls.Add(this.button2);            this.Controls.Add(this.label6);            this.Controls.Add(this.label5);            this.Controls.Add(this.label4);            this.Controls.Add(this.textBox5);            this.Controls.Add(this.label3);            this.Controls.Add(this.label2);            this.Controls.Add(this.textBox4);            this.Controls.Add(this.label1);            this.Controls.Add(this.textBox2);            this.Controls.Add(this.textBox1);            this.Name = "Form1";            this.Text = "发送电子邮件";            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 button2_Click(object sender, System.EventArgs e)        ...{            Email.SendEmail a=new Email.SendEmail();            a.FromEmail=textBox1.Text;            a.ToEmail=textBox4.Text;            a.smtpserver=textBox2.Text;            a.Title=textBox5.Text;            a.Content=textBox3.Text;            bool k;            string kkkk;            if (radioButton1.Checked==true)            ...{                k=a.send();                kkkk="组件方式";                            }            else            ...{                kkkk="Socket方式";                k=a.send2();            }            if (k)            ...{                label6.Text=kkkk+"发送邮件到"+textBox4.Text+"成功！";            }             else            ...{                label6.Text="失败！，失败原因："+a.errorstr.ToString();                            }                }    }}