private void btnHelp_Click(object sender, EventArgs e)
 {
     if (ob_FrmHelp == null || ob_FrmHelp.IsDisposed)
     {
         ob_FrmHelp = new FrmHelp();
         ob_FrmHelp.Show();
     }
     else
     {
         ob_FrmHelp.Activate();
     }
 }
 private void btnHelp_Click(object sender, EventArgs e)
 {
     if (ob_FrmHelp == null || ob_FrmHelp.IsDisposed)
     {
         ob_FrmHelp = new FrmHelp();
         ob_FrmHelp.Show();
     }
     else
     {
         ob_FrmHelp.Activate();
     }
 }