asp调用C#编写的DLL发送邮件

2019-11-17 04:18:40

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一直想写一个asp能用发送邮件的服务器组件，不过用VC太麻烦了，一直都没都手。

前两天看一篇文章，说是asp怎么调用C#写的DLL，一试之下，果然可以，大喜，这下用来写一个发送邮件的东东简单了吧。

呵呵，非常简单，一会就弄好了，不敢独享，先看代码：

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using System;
using System.Net.Mail;
using System.Text;
namespace IMELS
{
public class SendMail
{
public SendMail() { }
private string _to = string.Empty;
/// <summary>
/// 收件人地址，多个用“,”号隔开
/// </summary>
public string To
{
set { _to = value; }
}
private string _from = string.Empty;
/// <summary>
/// 发件人地址
/// </summary>
public string From
{
set { _from = value; }
}
private string _fromName = string.Empty;
/// <summary>
/// 发件人显示名称
/// </summary>
public string FromName
{
set { _fromName = value; }
}
private string _cc = string.Empty;
/// <summary>
/// 抄送，多个用“,”号隔开
/// </summary>
public string CC
{
set { _cc = value; }
}
private string _bcc = string.Empty;
/// <summary>
/// 密抄，多个用“,”号隔开
/// </summary>
public string BCC
{
set { _bcc = value; }
}
private string _charset = "GB2312";
/// <summary>
/// 邮件正文的编码
/// </summary>
public string Charset
{
set { _charset = value; }
}
private string _contentType = "html";
/// <summary>
/// 邮件格式(html or txt)
/// </summary>
public string ContentType
{
set { _contentType = value; }
}
private string _subject = string.Empty;
/// <summary>
/// 邮件标题
/// </summary>
public string Subject
{
set { _subject = value; }
}
private string _body = string.Empty;
/// <summary>
/// 邮件内容
/// </summary>
public string Body
{
set { _body = value; }
}
private string _smtp;
/// <summary>
/// SMTP服务器地址
/// </summary>
public string Smtp
{
set { _smtp = value; }
}
private string _username;
/// <summary>
/// SMTP用户名
/// </summary>
public string Username
{
set { _username = value; }
}
/// <summary>
/// SMTP密码
/// </summary>
private string _passWord;
public string Password
{
set { _password = value; }
}
private int _port = 25;
/// <summary>
/// SMTP商品
/// </summary>
public int Port
{
set { _port = value; }
}
/// <summary>
/// 发送
/// </summary>
public void Send()
{
MailAddress from = new MailAddress(_from, _fromName);
MailMessage message = new MailMessage();
message.From = from;
string[] toadd = _to.Split(',');
foreach (string _add in toadd)
{
try
{
message.To.Add(new MailAddress(_add));
}
catch(Exception e)
{
_error += "To Address Error : " + e.Message + "(" + _add + ");";
}
}
if (_cc != string.Empty)
{
string[] ccadd = _cc.Split(',');
foreach (string _add in ccadd)
{
try
{
message.CC.Add(new MailAddress(_add));
}
catch (Exception e)
{
_error += "CC Address Error : " + e.Message + "(" + _add + ");";
}
}
}
if (_bcc != string.Empty)
{
string[] bccadd = _bcc.Split(',');
foreach (string _add in bccadd)
{
try
{
message.Bcc.Add(new MailAddress(_add));
}
catch (Exception e)
{
_error += "BCC Address Error : " + e.Message + "(" + _add + ");";
}
}
}
message.Sender = from;
message.Subject = _subject;
message.Body = _body;
if (_contentType == "html" || _contentType == string.Empty)
{
message.IsBodyHtml = true;
}
else
{
message.IsBodyHtml = false;
}
message.BodyEncoding = Encoding.GetEncoding(_charset);
message.DeliveryNotificationOptions = DeliveryNotificationOptions.None;
SmtpClient __smtp = new SmtpClient();
__smtp.Host = _smtp;
__smtp.Port = _port;
__smtp.UseDefaultCredentials = false;
__smtp.Credentials = new System.Net.NetworkCredential(_username, _password);
__smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
try
{
__smtp.Send(message);
}
catch (SmtpException e)
{
_error += "SMTP Error:" + e.Message + ";";
}
}
private string _error = string.Empty;
/// <summary>
/// 返回错误信息
/// </summary>
public string Error
{
get { return _error; }
}
/// <summary>
/// 清空错误信息
/// </summary>
public void ClearErr()
{
_error = string.Empty;
}
}
}

using System;using System.Net.Mail;using System.Text;namespace IMELS{    public class SendMail    {        public SendMail() { }        private string _to = string.Empty;        /// <summary>        /// 收件人地址，多个用“,”号隔开        /// </summary>        public string To        {            set { _to = value; }        }        private string _from = string.Empty;        /// <summary>        /// 发件人地址        /// </summary>        public string From        {            set { _from = value; }        }        private string _fromName = string.Empty;        /// <summary>        /// 发件人显示名称        /// </summary>        public string FromName        {            set { _fromName = value; }        }        private string _cc = string.Empty;        /// <summary>        /// 抄送，多个用“,”号隔开        /// </summary>        public string CC        {            set { _cc = value; }        }        private string _bcc = string.Empty;        /// <summary>        /// 密抄，多个用“,”号隔开        /// </summary>        public string BCC        {            set { _bcc = value; }        }        private string _charset = "GB2312";        /// <summary>        /// 邮件正文的编码        /// </summary>        public string Charset        {            set { _charset = value; }        }        private string _contentType = "html";        /// <summary>        /// 邮件格式(html or txt)        /// </summary>        public string ContentType        {            set { _contentType = value; }        }        private string _subject = string.Empty;        /// <summary>        /// 邮件标题        /// </summary>        public string Subject        {            set { _subject = value; }        }        private string _body = string.Empty;        /// <summary>        /// 邮件内容        /// </summary>        public string Body        {            set { _body = value; }        }        private string _smtp;        /// <summary>        /// SMTP服务器地址        /// </summary>        public string Smtp        {            set { _smtp = value; }        }        private string _username;        /// <summary>        /// SMTP用户名        /// </summary>        public string Username        {            set { _username = value; }        }        /// <summary>        ///  SMTP密码        /// </summary>        private string _password;        public string Password        {            set { _password = value; }        }        private int _port = 25;        /// <summary>        /// SMTP商品        /// </summary>        public int Port        {            set { _port = value; }        }        /// <summary>        /// 发送        /// </summary>        public void Send()        {            MailAddress from = new MailAddress(_from, _fromName);            MailMessage message = new MailMessage();            message.From = from;                        string[] toadd = _to.Split(',');            foreach (string _add in toadd)            {                try                {                    message.To.Add(new MailAddress(_add));                }                catch(Exception e)                {                    _error += "To Address Error : " + e.Message + "(" + _add + ");";                }            }            if (_cc != string.Empty)            {                string[] ccadd = _cc.Split(',');                foreach (string _add in ccadd)                {                    try                    {                        message.CC.Add(new MailAddress(_add));                    }                    catch (Exception e)                    {                        _error += "CC Address Error : " + e.Message + "(" + _add + ");";                    }                }            }            if (_bcc != string.Empty)            {                string[] bccadd = _bcc.Split(',');                foreach (string _add in bccadd)                {                    try                    {                        message.Bcc.Add(new MailAddress(_add));                    }                    catch (Exception e)                    {                        _error += "BCC Address Error : " + e.Message + "(" + _add + ");";                    }                }            }            message.Sender = from;            message.Subject = _subject;            message.Body = _body;            if (_contentType == "html" || _contentType == string.Empty)            {                message.IsBodyHtml = true;            }            else            {                message.IsBodyHtml = false;            }            message.BodyEncoding = Encoding.GetEncoding(_charset);            message.DeliveryNotificationOptions = DeliveryNotificationOptions.None;            SmtpClient __smtp = new SmtpClient();            __smtp.Host = _smtp;            __smtp.Port = _port;            __smtp.UseDefaultCredentials = false;            __smtp.Credentials = new System.Net.NetworkCredential(_username, _password);            __smtp.DeliveryMethod = SmtpDeliveryMethod.Network;            try            {                __smtp.Send(message);            }            catch (SmtpException e)            {                _error += "SMTP Error:" + e.Message + ";";            }                    }        private string _error = string.Empty;        /// <summary>        /// 返回错误信息        /// </summary>        public string Error        {            get { return _error; }        }        /// <summary>        /// 清空错误信息        /// </summary>        public void ClearErr()        {            _error = string.Empty;        }    }}

说一下具体实现过程：

1、首先新建一个类库项目；打开项目属性页，在“应用程序”标签设置程序集名称为“IMELS”（当然，这个你可以设置为你喜欢的名字），输出类型为类库，如图：