发送邮件 内容包括表格小记-希望自己记得，这个世界不止一种展现形式

引用
using System.Net.Mail;
using System.Net.Mime;
using System.IO;

public class MyEmail
    {
        private MailMessage mMailMessage;   //主要处理发送邮件的内容（如：收发人地址、标题、主体、图片等等）
        private SmtpClient mSmtpClient; //主要处理用smtp方式发送此邮件的配置信息（如：邮件服务器、发送端口号、验证方式等等）
        private int mSenderPort;   //发送邮件所用的端口号（htmp协议默认为25）
        private string mSenderServerHost;    //发件箱的邮件服务器地址（IP形式或字符串形式均可）
        private string mSenderPassword;    //发件箱的密码
        private string mSenderUsername;   //发件箱的用户名（即@符号前面的字符串，例如：hello@163.com，用户名为：hello）
        private bool mEnableSsl;    //是否对邮件内容进行socket层加密传输
        private bool mEnablePwdAuthentication;  //是否对发件人邮箱进行密码验证

        ///<summary>
        /// 构造函数
        ///</summary>
        ///<param name="server">发件箱的邮件服务器地址</param>
        ///<param name="toMail">收件人地址（可以是多个收件人，程序中是以“;"进行区分的）</param>
        ///<param name="fromMail">发件人地址</param>
        ///<param name="subject">邮件标题</param>
        ///<param name="emailBody">邮件内容（可以以html格式进行设计）</param>
        ///<param name="username">发件箱的用户名（即@符号前面的字符串，例如：hello@163.com，用户名为：hello）</param>
        ///<param name="password">发件人邮箱密码</param>
        ///<param name="port">发送邮件所用的端口号（htmp协议默认为25）</param>
        ///<param name="sslEnable">true表示对邮件内容进行socket层加密传输，false表示不加密</param>
        ///<param name="pwdCheckEnable">true表示对发件人邮箱进行密码验证，false表示不对发件人邮箱进行密码验证</param>
        public MyEmail(string server, string toMail, string fromMail, string subject, string emailBody, string username, string password, string port, bool sslEnable, bool pwdCheckEnable)
        {
            try
            {
				
				mMailMessage = new MailMessage();
				string[] receivers = toMail.Split(';');
				for (int i = 0; i < receivers.Length; i++)
				{
					if (receivers[i].Length > 0)
					{
						mMailMessage.To.Add(receivers[i]);                               //为该电子邮件添加联系人
					}
				}
				//  mMailMessage.To.Add(toMail);
				mMailMessage.From = new MailAddress(fromMail);
                mMailMessage.Subject = subject;
                mMailMessage.Body = emailBody;
                mMailMessage.IsBodyHtml = true;
                mMailMessage.BodyEncoding = System.Text.Encoding.UTF8;
                mMailMessage.Priority = MailPriority.Normal;
                this.mSenderServerHost = server;
                this.mSenderUsername = username;
                this.mSenderPassword = password;
                this.mSenderPort = Convert.ToInt32(port);
                this.mEnableSsl = sslEnable;
                this.mEnablePwdAuthentication = pwdCheckEnable;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }
        }

        ///<summary>
        /// 添加附件
        ///</summary>
        ///<param name="attachmentsPath">附件的路径集合，以分号分隔</param>
        public void AddAttachments(string attachmentsPath)
        {
            try
            {
                string[] path = attachmentsPath.Split(';'); //以什么符号分隔可以自定义
                Attachment data;
                ContentDisposition disposition;
                for (int i = 0; i < path.Length; i++)
                {
                    data = new Attachment(path[i], MediaTypeNames.Application.Octet);
                    disposition = data.ContentDisposition;
                    disposition.CreationDate = File.GetCreationTime(path[i]);
                    disposition.ModificationDate = File.GetLastWriteTime(path[i]);
                    disposition.ReadDate = File.GetLastAccessTime(path[i]);
                    mMailMessage.Attachments.Add(data);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }
        }

        ///<summary>
        /// 邮件的发送
        ///</summary>
        public string Send()
        {
            try
            {
                if (mMailMessage != null)
                {
                    mSmtpClient = new SmtpClient();
                    //mSmtpClient.Host = "smtp." + mMailMessage.From.Host;
                    mSmtpClient.Host = this.mSenderServerHost;
                    mSmtpClient.Port = this.mSenderPort;
                    mSmtpClient.UseDefaultCredentials = false;
                    mSmtpClient.EnableSsl = this.mEnableSsl;
                    if (this.mEnablePwdAuthentication)
                    {
                        System.Net.NetworkCredential nc = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);
                        //mSmtpClient.Credentials = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);
                        //NTLM: Secure Password Authentication in Microsoft Outlook Express
                        mSmtpClient.Credentials = nc.GetCredential(mSmtpClient.Host, mSmtpClient.Port, "NTLM");
                    }
                    else
                    {
                        mSmtpClient.Credentials = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);
                    }
                    mSmtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
                    mSmtpClient.Send(mMailMessage);
					return "Success";
				}
				return "Fail"+ "mMailMessage is null";
			}
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
				return "Fail";
            }
        }
    }

//邮件内容建议  用div + table ，行间样式，
//因为不同的邮箱对这些内容的解析有差异，比如 qq邮箱对标签间的空格不友好导致展示异常 ，
//outlook显示的时候对一些标签不友好导致内容无法展示
private void Test_Click(object sender, EventArgs e)
{
	string html="<table><tr><td></td></tr></table>"  ;
	Lib.MyEmail email = new Lib.MyEmail("smtp.qq.com", "收件箱", "发送", "ceshi",html,
					"邮箱", "pop授权码", "25", false, false);
	email.AddAttachments("文件路径");//添加附件
	email.Send();
}

发送邮件功能的实现很简单，因为自己习惯用163邮箱，第一次做只看着自己的邮箱正常，后来发现邮箱之间也要考虑 ‘兼容’，想起当时的自己的觉得很搞笑，还好自己又看了看别的邮箱邮箱，
建议在outlook看，在outlook看的正常的话，在其他邮箱里看差不多都是正常的，可能字体大小方面会有一些差异