邮件系统

//设置代理

System.Net.WebProxy proxy = new System.Net.WebProxy("itgproxy.redmond.corp.microsoft.com:80");
proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
System.Net.GlobalProxySelection.Select = proxy;

MailMessage m = new MailMessage();
m.From = tbFrom.Text;
m.To = tbTo.Text;
m.Subject = tbSubject.Text;
m.Body = tbBody.Text;
//优先级
switch(ddlp.SelectedIndex)
{
case 0:
m.Priority = MailPriority.High;
break;
case 1:
m.Priority = MailPriority.Low;
break;
default:
m.Priority = MailPriority.Normal;
break;
}
//格式
if(ddlp.SelectedIndex==0)
m.BodyFormat = MailFormat.Text;
else
m.BodyFormat = MailFormat.Html;
//以下设置服务器
if(tbServer.Text!="")
{

//以下代码适用于Framework1.1以上版本。
//SmtpMail.SmtpServer = tbServer.Text;
// m.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate",
// "1"); //basic authentication
// m.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername",
// tbUserName.Text); //set your username here
// m.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword",
// tbPass.Text); //set your password here
}
//以下处理附件
string strFileName = FileSelect.PostedFile.FileName;
if(strFileName!="")
m.Attachments.Add(new MailAttachment(strFileName));
SmtpMail.Send(m);