C#发送邮件的功能在网上找了很多也有利用socket的 ，试了一下不行的原因是smtp服务器的问题。在这里我用了mailmessage和搜狐的stmp.sohu.com。源码如下：
protected void Button1_Click(object sender, EventArgs e)
{ string from = ******@sohu.com;
string fromer = "发件人";
string to = "*****@126.com";
string toer = "收件人";
string Subject = "邮件标题";
string file="附件地址";
string Body ="发送内容";
string SMTPHost = "smtp.sohu.com";
string SMTPuser = "******@sohu.com";
string SMTPpass = "*******";
sendmail(from, fromer, to, toer, Subject, Body,file,SMTPHost, SMTPuser, SMTPpass);
}
/// <summary>
/// C#发送邮件函数
/// </summary>
/// <param name="from">发送者邮箱</param>
/// <param name="fromer">发送人</param>
/// <param name="to">接受者邮箱</param>
/// <param name="toer">收件人</param>
/// <param name="Subject">主题</param>
/// <param name="Body">内容</param>
/// <param name="file">附件</param>
/// <param name="SMTPHost">smtp服务器</param>
/// <param name="SMTPuser">邮箱</param>
/// <param name="SMTPpass">密码</param> /// <returns></returns>
public bool sendmail(string sfrom, string sfromer, string sto, string stoer, string sSubject, string sBody, string sfile, string sSMTPHost, string sSMTPuser, string sSMTPpass)
{
设置from和to地址
MailAddress from = new MailAddress(sfrom, sfromer);
MailAddress to = new MailAddress(sto, stoer); 创建一个MailMessage对象
MailMessage oMail = new MailMessage(from, to); 添加附件
if (sfile != "")
{
oMail.Attachments.Add(new Attachment(sfile));
}
邮件标题
oMail.Subject = sSubject; 邮件内容
oMail.Body = sBody; 邮件格式
oMail.IsBodyHtml = false; 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.High; 发送邮件
SmtpClient client = new SmtpClient();
client.UseDefaultCredentials = false;
client.Host = sSMTPHost;
client.Credentials = new NetworkCredential(sSMTPuser, sSMTPpass);
client.DeliveryMethod = SmtpDeliveryMethod.Network;
try
{
client.Send(oMail);
return true;
}
catch (Exception err)
{
Response.Write(err.Message.ToString());
return false;
}
finally
{
释放资源
oMail.Dispose();
} }
