if (txtfrom2.Text.Trim().Length == 0 or txtto2.Text.Trim().Length == 0)
{
Rftxtfrom2.Visible = false;
Rftxtto2.Visible = false;
Rftxtjd2.Visible = false;
Rftxtflno2.Visible = false;
Rftxtdep2.Visible = false;
}
else
{
Rftxtfrom2.Visible = true;
Rftxtto2.Visible = true;
Rftxtjd2.Visible = true;
Rftxtflno2.Visible = true;
Rftxtdep2.Visible = true;
}