void _bw_send_DoWork(object sender, DoWorkEventArgs e)
{
var args = e.Argument as GenMailArgs;
Gen.Mail(args, sender, e);
}
private void bw_create_DoWork(object sender, DoWorkEventArgs e)
{
var args = e.Argument as GenUsersArgs;
Gen.Users(args.UserCount, args.DEPath, args.DefaultPassword, sender, e);
}