/// <summary> /// 设置发件人信息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnSet_Click(object sender, EventArgs e) { SenderForm sf = new SenderForm(); if (sf.ShowDialog() == DialogResult.OK) { txtSender.Text = sf.MailAdderss; btnSend.Enabled = !string.IsNullOrEmpty(txtNormal.Text.Trim()) && !string.IsNullOrEmpty(txtSender.Text.Trim()); if (btnSend.Enabled) { _mailHelper = new MailHelper(sf.MailAdderss, sf.MailPW, sf.SMTPServer, sf.DisplayNmae, sf.IsSSL); } } }