C#中用SMTP发邮件怎么写服务验证这块呀？
我用C#写了一个服务，在发信时发现：SMTP服务器需要SMTP验证，但   SmtpClient()类好像没有用户ID和密码和属性，MSDN说：

可以使用应用程序或计算机配置文件来指定所有   SmtpClient   对象的默认主机、端口和凭据值。有关更多信息，请参见   mailSettings   元素（网络设置）。

但我写的是Windows   服务，没有配置文件呀，应该怎么办？



------解决方案--------------------
我已经找到了

SmtpClient client = new SmtpClient(smtpserver);
client.Credentials = new NetworkCredential(fromMail, password);

这样就可以了
揭帖吧。哈
------解决方案--------------------
public class MailHelper
{
String EmployeeAlias = String.Empty;

public MailHelper(Object Alias)
{
EmployeeAlias = Alias.ToString();
}

/// <summary>
/// Fill the MailMessage Entity
/// </summary>
/// <returns> </returns>
private MailMessage InitMailEntity()
{
MailMessage Message = new MailMessage();
MailAddress mailFrom = new MailAddress(ConfigurationSettings.AppSettings[ "mailform "].ToString());
Message.From = mailFrom;
Message.To.Add(new MailAddress(EmployeeAlias + ConfigurationSettings.AppSettings[ "mail "].ToString()));
Message.Subject = ConfigurationSettings.AppSettings[ "mailsubject "].ToString();
Message.Body = ConfigurationSettings.AppSettings[ "mailbody "].ToString();

Message.IsBodyHtml = true;
return Message;
}

/// <summary>
/// Send Mail
/// </summary>
public void SendMail()
{
try
{
SmtpClient client = new SmtpClient(ConfigurationSettings.AppSettings[ "smtpclient "].ToString(), 25);
client.Credentials = new NetworkCredential(ConfigurationSettings.AppSettings[ "user "].ToString(), ConfigurationSettings.AppSettings[ "password "].ToString(), ConfigurationSettings.AppSettings[ "domain "].ToString());
client.Send(InitMailEntity());
}
catch (SmtpException e)
{
throw e;
}
}