private void btnAdd_Click(object sender, EventArgs e)
 {
     try
     {
         MasterPass master = new MasterPass();
         master.ShowDialog();
         if (master.Result())
         {
             fail.AddEquip(txtEquipName.Text);
             txtEquipName.Clear();
             LoadData();
         }
     }
     catch (Exception)
     {
         MessageBox.Show("Can not add equip. Please again !");
     }
 }