private void btnDataBase_Click(object sender, EventArgs e)
 {
     if (ob_FrmDataBase == null || ob_FrmDataBase.IsDisposed)
     {
         ob_FrmDataBase = new FrmDataBase();
         ob_FrmDataBase.Show();
     }
     else
     {
         ob_FrmDataBase.Activate();
     }
 }
 private void btnDataBase_Click(object sender, EventArgs e)
 {
     if (ob_FrmDataBase == null || ob_FrmDataBase.IsDisposed)
     {
         ob_FrmDataBase = new FrmDataBase();
         ob_FrmDataBase.Show();
     }
     else
     {
         ob_FrmDataBase.Activate();
     }
 }