邮件发送 EMailHelper

引用：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Text;

EMailHepler类：

public static class EmailHelper
    {
        /// <summary>
        /// C#发送邮件函数
        /// </summary>
        /// <param name="fromDisplayName">发件邮箱显示名</param>
        /// <param name="sto">收件邮箱</param>
        /// <param name="sSubject">主题</param>
        /// <param name="sBody">内容</param>
        /// <param name="sfiles">附件路径,绝对路径</param>
        /// <param name="ccto">抄送地址</param>
        /// <param name="isBodyHtml">邮件是否支持html格式</param>
        /// <returns></returns>
        public static bool Sendmail(string fromDisplayName, string sto, string sSubject, string sBody,
            string[] sfiles = null, string[] ccto = null, bool isBodyHtml = false)
        {
            ////设置from和to地址
            MailAddress from = new MailAddress(EmailSection.Instance.SMTPuser, fromDisplayName);
            MailAddress to = new MailAddress(sto);

            ////创建一个MailMessage对象
            MailMessage oMail = new MailMessage(from, to);

            //// 添加附件
            if (sfiles != null)
            {
                foreach (var item in sfiles)
                {
                    oMail.Attachments.Add(new Attachment(item));
                }
            }

            //添加抄送用户
            if (ccto != null)
            {
                foreach (var item in ccto)
                {
                    oMail.CC.Add(new MailAddress(item));
                }
            }
            ////邮件标题
            oMail.Subject = sSubject;

            ////邮件内容
            oMail.Body = sBody;

            ////邮件格式
            oMail.IsBodyHtml = isBodyHtml;

            ////邮件采用的编码
            oMail.BodyEncoding = System.Text.Encoding.GetEncoding("GB2312");

            ////设置邮件的优先级为高
            oMail.Priority = MailPriority.Normal;

            ////发送邮件
            SmtpClient client = new SmtpClient();
            ////client.UseDefaultCredentials = false;
            client.Host = EmailSection.Instance.SMTPHost;
            client.Credentials = new NetworkCredential(EmailSection.Instance.SMTPuser, EmailSection.Instance.SMTPpass);
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            try
            {
                client.Send(oMail);
                return true;
            }
            catch (Exception err)
            {
                Console.WriteLine(err.Message.ToString());
                return false;
            }
            finally
            {
                ////释放资源
                oMail.Dispose();
            }

        }
    }

EmailSection配置相关信息：

public class EmailSection : ConfigurationSection
    {
        private static EmailSection _instance = null;

        public static EmailSection Instance
        {
            get
            {
                if (_instance == null)
                {
                    _instance = (EmailSection)ConfigurationManager.GetSection(typeof(EmailSection).Name);
                }
                return _instance;
            }
        }
        [ConfigurationProperty("SMTPHost", IsRequired = true)]
        public string SMTPHost
        {
            get
            { return (String)this["SMTPHost"]; }
            set
            { this["SMTPHost"] = value; }
        }
        [ConfigurationProperty("SMTPuser", IsRequired = true)]
        public string SMTPuser
        {
            get
            { return (String)this["SMTPuser"]; }
            set
            { this["SMTPuser"] = value; }
        }
        [ConfigurationProperty("SMTPpass", IsRequired = true)]
        public string SMTPpass
        {
            get
            { return (String)this["SMTPpass"]; }
            set
            { this["SMTPpass"] = value; }
        }
    }

配置文件配置：

<EmailSection SMTPHost = "smtp.exmail.qq.com" SMTPuser = "developer@laiyihuo.com" SMTPpass = "laiyihuo_1"></EmailSection>