ASP.NET------メール送信類

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

namespace Core.Common.Service
{
    /// <summary>
    ///     
    /// </summary>
    public static class EMail
    {
        /// <summary>
        ///     
        /// </summary>
        /// <param name="to">       </param>
        /// <param name="from">       </param>
        /// <param name="displayName">      </param>
        /// <param name="subject">    </param>
        /// <param name="body">    </param>
        /// <param name="userName">  smtp         ,       '@'     </param>
        /// <param name="password">  smtp          </param>
        /// <param name="smtpHost">       smtp  </param>
        public static void Send(string to, string from, string displayName, string subject, string body, string userName, string password, string smtpHost)
        {
            try
            {
                MailAddress fromaddress = new MailAddress(from, displayName);
                MailAddress toaddress = new MailAddress(to);
                MailMessage message = new MailMessage(fromaddress, toaddress);
                message.Subject = subject;//      
                message.BodyEncoding = System.Text.UnicodeEncoding.UTF8;
                message.IsBodyHtml = true;//       html  
                message.Body = body;//      
                message.Priority = MailPriority.High;
                SmtpClient client = new SmtpClient(smtpHost);
                client.DeliveryMethod = SmtpDeliveryMethod.Network;
                //            
                //          [email protected]，     abc   [email protected]
                client.Credentials = new NetworkCredential(userName, password);
                client.Send(message);
            }
            catch(Exception ex)
            {
                DirectoryAndFile.SaveFile("abc.txt", ex.GetType().ToString());
            }
        }
    }
}