private void btn_addTable_Click(object sender, EventArgs e)
 {
     using (TableED tableED = new TableED())
     {
         if (tableED.ShowDialog() != DialogResult.Cancel)
         {
             btnt_clear.Hide();
             txtt_search.Clear();
             txtt_search.Focus();
             refreshTable(tables.getTables());
         }
     }
 }
        private void dgvt_table_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            int index = e.RowIndex;

            if (index != -1)
            {
                DataGridViewRow selectedRow = dgvt_table.Rows[index];
                string          table_id    = selectedRow.Cells["table_id"].Value.ToString();

                using (TableED tableED = new TableED(table_id))
                {
                    if (tableED.ShowDialog() != DialogResult.Cancel)
                    {
                        btnt_clear.Hide();
                        txtt_search.Clear();
                        txtt_search.Focus();
                        refreshTable(tables.getTables());
                    }
                }
            }
        }