Email客户端

开发平台：
Visual C++

Form1.cs：源码内容
							using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Mail;
namespace SendEmail
{
    /// <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.Label label2;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.Label label4;
        private System.Windows.Forms.Label label5;
        private System.Windows.Forms.Label label6;
        private System.Windows.Forms.Label label7;
        private System.Windows.Forms.Button btn_Send;
        private System.Windows.Forms.TextBox txt_From;
        private System.Windows.Forms.TextBox txt_To;
        private System.Windows.Forms.TextBox txt_Subject;
        private System.Windows.Forms.TextBox txt_Body;
        private System.Windows.Forms.Button btn_Browse;
        private System.Windows.Forms.TextBox txt_Attachment;
        private System.Windows.Forms.TextBox txt_Cc;
        private System.Windows.Forms.Label label8;
        private System.Windows.Forms.ComboBox cmb_Priority;
        private System.Windows.Forms.OpenFileDialog openFileDialog1;
        /// <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 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.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.label4 = new System.Windows.Forms.Label();
            this.label5 = new System.Windows.Forms.Label();
            this.label6 = new System.Windows.Forms.Label();
            this.txt_From = new System.Windows.Forms.TextBox();
            this.txt_To = new System.Windows.Forms.TextBox();
            this.txt_Cc = new System.Windows.Forms.TextBox();
            this.txt_Subject = new System.Windows.Forms.TextBox();
            this.txt_Body = new System.Windows.Forms.TextBox();
            this.btn_Browse = new System.Windows.Forms.Button();
            this.btn_Send = new System.Windows.Forms.Button();
            this.txt_Attachment = new System.Windows.Forms.TextBox();
            this.label7 = new System.Windows.Forms.Label();
            this.label8 = new System.Windows.Forms.Label();
            this.cmb_Priority = new System.Windows.Forms.ComboBox();
            this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
            this.SuspendLayout();
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(16, 48);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(53, 12);
            this.label1.TabIndex = 0;
            this.label1.Text = "发件人：";
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(16, 80);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(53, 12);
            this.label2.TabIndex = 1;
            this.label2.Text = "收件人：";
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.Location = new System.Drawing.Point(16, 112);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(53, 12);
            this.label3.TabIndex = 2;
            this.label3.Text = "抄  送：";
            // 
            // label4
            // 
            this.label4.AutoSize = true;
            this.label4.Location = new System.Drawing.Point(16, 176);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(53, 12);
            this.label4.TabIndex = 3;
            this.label4.Text = "附  件：";
            // 
            // label5
            // 
            this.label5.AutoSize = true;
            this.label5.Location = new System.Drawing.Point(16, 144);
            this.label5.Name = "label5";
            this.label5.Size = new System.Drawing.Size(53, 12);
            this.label5.TabIndex = 4;
            this.label5.Text = "主  题：";
            // 
            // label6
            // 
            this.label6.AutoSize = true;
            this.label6.Location = new System.Drawing.Point(16, 240);
            this.label6.Name = "label6";
            this.label6.Size = new System.Drawing.Size(53, 12);
            this.label6.TabIndex = 5;
            this.label6.Text = "正  文：";
            // 
            // txt_From
            // 
            this.txt_From.Location = new System.Drawing.Point(80, 40);
            this.txt_From.Name = "txt_From";
            this.txt_From.Size = new System.Drawing.Size(440, 21);
            this.txt_From.TabIndex = 6;
            // 
            // txt_To
            // 
            this.txt_To.Location = new System.Drawing.Point(80, 72);
            this.txt_To.Name = "txt_To";
            this.txt_To.Size = new System.Drawing.Size(440, 21);
            this.txt_To.TabIndex = 7;
            // 
            // txt_Cc
            // 
            this.txt_Cc.Location = new System.Drawing.Point(80, 104);
            this.txt_Cc.Name = "txt_Cc";
            this.txt_Cc.Size = new System.Drawing.Size(440, 21);
            this.txt_Cc.TabIndex = 8;
            // 
            // txt_Subject
            // 
            this.txt_Subject.Location = new System.Drawing.Point(80, 136);
            this.txt_Subject.Name = "txt_Subject";
            this.txt_Subject.Size = new System.Drawing.Size(440, 21);
            this.txt_Subject.TabIndex = 9;
            // 
            // txt_Body
            // 
            this.txt_Body.Location = new System.Drawing.Point(16, 264);
            this.txt_Body.Multiline = true;
            this.txt_Body.Name = "txt_Body";
            this.txt_Body.Size = new System.Drawing.Size(504, 112);
            this.txt_Body.TabIndex = 10;
            // 
            // btn_Browse
            // 
            this.btn_Browse.Location = new System.Drawing.Point(456, 168);
            this.btn_Browse.Name = "btn_Browse";
            this.btn_Browse.Size = new System.Drawing.Size(64, 23);
            this.btn_Browse.TabIndex = 11;
            this.btn_Browse.Text = "浏览...";
            this.btn_Browse.Click += new System.EventHandler(this.btn_Browse_Click);
            // 
            // btn_Send
            // 
            this.btn_Send.Location = new System.Drawing.Point(448, 392);
            this.btn_Send.Name = "btn_Send";
            this.btn_Send.Size = new System.Drawing.Size(72, 24);
            this.btn_Send.TabIndex = 12;
            this.btn_Send.Text = "发  送";
            this.btn_Send.Click += new System.EventHandler(this.btn_Send_Click);
            // 
            // txt_Attachment
            // 
            this.txt_Attachment.Location = new System.Drawing.Point(80, 168);
            this.txt_Attachment.Name = "txt_Attachment";
            this.txt_Attachment.Size = new System.Drawing.Size(368, 21);
            this.txt_Attachment.TabIndex = 13;
            // 
            // label7
            // 
            this.label7.AutoSize = true;
            this.label7.Font = new System.Drawing.Font("宋体", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.label7.Location = new System.Drawing.Point(200, 8);
            this.label7.Name = "label7";
            this.label7.Size = new System.Drawing.Size(136, 21);
            this.label7.TabIndex = 14;
            this.label7.Text = "邮件发送系统";
            // 
            // label8
            // 
            this.label8.AutoSize = true;
            this.label8.Location = new System.Drawing.Point(16, 208);
            this.label8.Name = "label8";
            this.label8.Size = new System.Drawing.Size(53, 12);
            this.label8.TabIndex = 15;
            this.label8.Text = "优先级：";
            // 
            // cmb_Priority
            // 
            this.cmb_Priority.Location = new System.Drawing.Point(80, 206);
            this.cmb_Priority.Name = "cmb_Priority";
            this.cmb_Priority.Size = new System.Drawing.Size(80, 20);
            this.cmb_Priority.TabIndex = 16;
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(536, 430);
            this.Controls.Add(this.cmb_Priority);
            this.Controls.Add(this.label8);
            this.Controls.Add(this.label7);
            this.Controls.Add(this.txt_Attachment);
            this.Controls.Add(this.btn_Send);
            this.Controls.Add(this.btn_Browse);
            this.Controls.Add(this.txt_Body);
            this.Controls.Add(this.txt_Subject);
            this.Controls.Add(this.txt_Cc);
            this.Controls.Add(this.txt_To);
            this.Controls.Add(this.txt_From);
            this.Controls.Add(this.label6);
            this.Controls.Add(this.label5);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Name = "Form1";
            this.Text = "邮件发送系统";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);
            this.PerformLayout();
        }
        #endregion
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.Run(new Form1());
        }
        private void Form1_Load(object sender, System.EventArgs e)
        {
            //初始化优先级组合框和格式组合框
            cmb_Priority.Items.Add("高");
            cmb_Priority.Items.Add("低");
            cmb_Priority.Items.Add("普通");
            cmb_Priority.SelectedIndex = 2;
        }
        //发送
        private void btn_Send_Click(object sender, System.EventArgs e)
        {
            try
            {
                MailMessage myMail = new MailMessage(txt_From.Text.Trim(), txt_To.Text.Trim());
                if (txt_Cc.Text.Trim() != "")
                {
                    myMail.CC.Add(txt_Cc.Text.Trim());              //设置抄送
                }
                myMail.Subject = txt_Subject.Text.Trim();   //设置邮件主题
                myMail.Body = txt_Body.Text.Trim();         //设置邮件正文
                //添加附件
                if (txt_Attachment.Text.Trim() != "")
                {
                    char[] delim = new char[] { ',' };
                    foreach (string att in txt_Attachment.Text.Trim().Split(delim))
                    {
                        Attachment myAttachment = new Attachment(att);
                        myMail.Attachments.Add(myAttachment);
                    }
                }
                //设置邮件优先级
                if (cmb_Priority.Text == "高")
                {
                    myMail.Priority = MailPriority.High;
                }
                else if (cmb_Priority.Text == "低")
                {
                    myMail.Priority = MailPriority.Low;
                }
                else
                {
                    myMail.Priority = MailPriority.Normal;
                }
                //发送邮件
                SmtpClient smtp = new SmtpClient();
                smtp.Host = "mail1.ufida.com.cn";
                smtp.UseDefaultCredentials = true;
                //smtp服务器需要验证
                smtp.Credentials = new NetworkCredential("hcq", "uf0000");
                smtp.Send(myMail);
                MessageBox.Show("邮件发送成功!");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        //添加附件
        private void btn_Browse_Click(object sender, System.EventArgs e)
        {
            openFileDialog1.Multiselect = true;   //可以在打开文件对话框中同时选择多个文件
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                //将多个选定附件的名称显示在文本框中，并以逗号分隔
                foreach (string name in openFileDialog1.FileNames)
                {
                    txt_Attachment.Text = txt_Attachment.Text + name + ",";
                }
                //去掉最后一个多余的逗号
                txt_Attachment.Text = txt_Attachment.Text.Substring(0, txt_Attachment.Text.Length - 1);
            }
        }
        //退出
        private void btn_Exit_Click(object sender, System.EventArgs e)
        {
            Application.Exit();
        }
    }
}

						