public void MailChoose(MyUserControl item) { String email = item.getEmail(); if (email.Equals("")) return; else { factory.strSendTo = email; MailList.Visibility = Visibility.Collapsed; SendMail send = new SendMail(); send.sendMail(factory.strSendTo, factory.strContent, factory.HasPicture); MailBox.Document.SetText(Windows.UI.Text.TextSetOptions.None, ""); Message.ShowToast("邮件正在发送中...."); } }