private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
Properties.Settings.Default.OT = TB_OT.Text;
Properties.Settings.Default.SID = TB_SID.Text;
Properties.Settings.Default.TID = TB_TID.Text;
//Properties.Settings.Default.Gender = Label_OTGender.Text;
Properties.Settings.Default.Save();
}