private void OpenEmailAttachment(Attachment a)
{
Message m = xstFile.OpenAttachedMessage(a);
ShowMessage(m);
view.PushMessage(m);
}
private void btnOpenEmail_Click(object sender, RoutedEventArgs e)
{
Message m = xstFile.OpenAttachedMessage(listAttachments.Items.Cast <Attachment>().First(a => a.IsEmail));
ShowMessage(m);
view.PushMessage(m);
}