C#成功发送邮件

usingSystem.Web.Security;usingSystem.Web.UI;usingSystem.Web.UI.WebControls;usingSystem.Web.UI.WebControls.WebParts;usingSystem.Web.UI.HtmlControls;usingSystem.Net;usingSystem.Net.Mail;usingSystem.Net.Mime;namespaceSendMail{//////发送邮件类的摘要说明///classSendMail