c#语言邮件发送参考代码

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.IO;

using System.Net.Mail;

using System.Text;

using System.Windows.Forms;

using System.Drawing.Imaging;

using System.Collections;

using System.Threading;

using Microsoft.Win32;



namespace QQ邮件发送

{

    public partial class Form1 : Form

    {

        public Thread thread;//定义一个线程

        public Form1()

        {

            InitializeComponent();

            

            this.im = Image.FromFile("1.jpg");

            this.BackgroundImage = im;

        }

        string file;

        //string aa;

        ArrayList Lujing=new ArrayList();

     

        private void button6_Click(object sender, EventArgs e) //添加附件

        {

            openFileDialog1.Filter = "Word文件.doc|*.doc|表格文件.xls|*.xls|所有文件|*.*"; //筛选文件类型

            DialogResult dk = openFileDialog1.ShowDialog();  //创建一个枚举类型的变量dk来接收打开这个对话框

            if (dk == DialogResult.OK) //如果点的是确定,才会执行下面的代码

            {

             

                string[] files = openFileDialog1.FileNames;//将获取到的所有路径都存到一个string类型的数组里面

                foreach (string file in files)//遍历所有路径，一条条的加到Lujing这个ArrayList里面去，然后用的时候再从集合里面一条条遍历出来

                {

                    Lujing.Add(file);

                    txtfujianname.AppendText(file + "\r\n");//AppendText追加文本

                }

                MessageBox.Show("添加附件成功");

                //获取附件的名字添加到文本框当中

            }





        }

     

        //下面开始写SendEmail函数

        MailMessage msg;

      

        public void SendEmail(string Emailshoujian, string Emailbiaoti, string Emailzhengwen, MailAddress EmailFrom)

        {

            try

            {

                //创建发送邮箱，并获取发件人地址，收件人地址，以及邮件标题与正文

                msg = new MailMessage();  //创建一个MailMessage的类，用来发送邮件

                msg.To.Add(Emailshoujian); //将收件人的邮箱地址添加进来  

                msg.Subject = Emailbiaoti; //获取一下发送邮件的标题

                msg.SubjectEncoding = System.Text.Encoding.UTF8;//邮件标题改成国际编码方式

                msg.From = EmailFrom;//获取一下发件人的邮箱地址

                msg.Body = Emailzhengwen;//邮件的正文内容

                msg.BodyEncoding = System.Text.Encoding.UTF8; //将邮件的正文内容改一下编码方式

                msg.IsBodyHtml = false; //确认正文内容是不是以网页格式发送的

                msg.Priority = MailPriority.High;//邮件发送的优先等级为最高



              

                //添加附件

                if(txtfujianname.Text!="")

                {

                        foreach (string path in Lujing) //路径都存到Lujing里面去了，全部遍历出来

                        {

                            Attachment data = new Attachment(path); //Attachment：附件

                            msg.Attachments.Add(data);

                        }       

                }



                // //设置用于验证发件人身份的凭据

                SmtpClient client = new SmtpClient(); //允许应用程序使用简单邮件传输协议 (SMTP) 来发送电子邮件。 

                client.Host = "smtp.qq.com"; //设置一下应用程序的服务器名称







                //请在这里输入您邮箱和密码！！！！！！！！！！！！！！！！！！！！！！！！！！！！

                client.Credentials = new System.Net.NetworkCredential("[email protected]", "lk19920619"); //输入发件人邮箱的用户名密码来发送邮件

                //注意！！必须在发送的时候将发件人的邮箱账户POP3/IMAP协议开启，然后输入的密码是QQ邮箱独立密码，而不是QQ密码！！！！

                client.Send(msg);//发送

                //mail from address must be same as authorization user 若出现这个错误，证明没有将发件人邮箱的POP3/IMAP协议打开，并且密码是QQ邮箱独立密码，而不是QQ密码

                //打开方式在最有一张截图

                MessageBox.Show("发送成功");

            }

            catch (Exception ex  )

            {



                throw ex;

            }

           

        }



        //当点击发送按钮的时候启动新的线程，从而不会因为卡住而影响到别的按钮的功能

        private void button1_Click(object sender, EventArgs e) //发送按钮

        {

            //thread = new Thread(new ThreadStart(fasong)); //为button1按钮造一个新的线程，这样点button1的话，就会运行新造的这个线程，而不会影响到窗体的主线程，button1执行的发送，点了button1如果卡住，但不会影响到别的按钮的作用

            //thread.IsBackground = true;//确认新造的线程后台运行

            //thread.Start();

            fasong();

        }

        public void fasong()

        {

            // MailAddress 表示电子邮件发件人或收件人的地址。

            MailAddress EmailFrom = new MailAddress("[email protected]");  //发件人邮箱地址 //创建一个MailAddress的类来写发件人的地址

            string Emailshoujian = txtshoujian.Text;  //收件人邮箱地址

            string Emailbiaoti = txtbiaoti.Text; //邮件标题

            string Emailzhengwen = textBox1.Text; //邮件内容

            SendEmail(Emailshoujian, Emailbiaoti, Emailzhengwen, EmailFrom);  //调用发送邮件函数

        }

        private bool isok;

        private int dianxiaqux;

        private int dianxiaquy;

        private int chushix;

        private int chushiy;

        private int movex;

        private int movey;

        private void Form1_MouseDown(object sender, MouseEventArgs e)

        {

            isok = true;

            dianxiaqux = Cursor.Position.X;

            dianxiaquy = Cursor.Position.Y;

            chushix = this.Location.X;

            chushiy = this.Location.Y;

        }



        private void Form1_MouseMove(object sender, MouseEventArgs e)

        {

            if (isok)

            {

                movex = Cursor.Position.X;

                movey = Cursor.Position.Y;

                this.Location = new Point(chushix + movex - dianxiaqux, chushiy + movey - dianxiaquy);

            }

        }



        private void Form1_MouseUp(object sender, MouseEventArgs e)

        {

            isok = false;

        }



        private void button5_Click(object sender, EventArgs e)

        {

            this.Close();

        }



        private void button7_Click(object sender, EventArgs e)

        {

           

        }



        private void button7_Click_1(object sender, EventArgs e)

        {

            this.WindowState = FormWindowState.Minimized;

        }

        Image im;

        private int i = 1;

        private void button8_Click(object sender, EventArgs e)

        {

            if (i == 0)

            {

                this.im = Image.FromFile("5.jpg");

                this.BackgroundImage = im;

            }

            else if(i == 1)

            {

                this.im = Image.FromFile("2.jpg");

                this.BackgroundImage = im;

            }

             else if(i == 2)

            {

                this.im = Image.FromFile("3.jpg");

                this.BackgroundImage = im;

               

            }

            else if (i == 3)

            {

                this.im = Image.FromFile("4.jpg");

                this.BackgroundImage = im;

            }

            else if (i == 4)

            {

                this.im = Image.FromFile("5.jpg");

                this.BackgroundImage = im;

            }

            else 

            {

                this.im = Image.FromFile("1.jpg");

                this.BackgroundImage = im;

                i = 0;

             }

           

              i++;

        }



        private void button9_Click(object sender, EventArgs e)

        {

           

        }

        string pic;

        private void button9_Click_1(object sender, EventArgs e)

        {

            

           

        }

        SoftReg softReg = new SoftReg();

        private void Form1_Load(object sender, EventArgs e) //在页面加载的时候判断软件是否注册

        {

            //判断软件是否注册

            RegistryKey retkey = Registry.CurrentUser.OpenSubKey("SOFTWARE", true).CreateSubKey("mySoftWare").CreateSubKey("Register.INI");

            foreach (string strRNum in retkey.GetSubKeyNames())

            {

                if (strRNum == softReg.GetRNum())

                {

                    this.label1.Text = "此软件已注册！";

                    this.btnReg.Enabled = false;

                    return;

                }

            }

            this.label1.Text = "此软件尚未注册！";

            this.btnReg.Enabled = true;

            MessageBox.Show("您现在使用的是试用版，可以免费试用30次！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);

            Int32 tLong;    //已使用次数

            try

            {

                tLong = (Int32)Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\mySoftWare", "UseTimes", 0);

                MessageBox.Show("您已经使用了" + tLong + "次！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);

            }

            catch (Exception)

            {

                MessageBox.Show("欢迎使用本软件！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);

                Registry.SetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\mySoftWare", "UseTimes", 0, RegistryValueKind.DWord);

            }

            //判断是否可以继续试用

            tLong = (Int32)Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\mySoftWare", "UseTimes", 0);

            if (tLong < 30)

            {

                int tTimes = tLong + 1;

                Registry.SetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\mySoftWare", "UseTimes", tTimes);



            }

            else

            {

                DialogResult result = MessageBox.Show("试用次数已到！您是否需要注册？", "信息", MessageBoxButtons.YesNo, MessageBoxIcon.Information);

                if (result == DialogResult.Yes)

                {

                    //FormRegister.state = false; //设置软件状态为不可用

                    btnReg_Click(sender, e);    //打开注册窗口

                }

                else

                {

                    Application.Exit();

                }

            }

        }



        private void btnReg_Click(object sender, EventArgs e)

        {

            FormRegister frmRegister = new FormRegister();

            frmRegister.ShowDialog();

        }



        //这是为了打开添加附件的窗口，从而获得选择的附件的路径

     

    }

}