private void btCreate_Click(object sender, EventArgs e)
        {
            Dictionary <string, string> colInfo = new Dictionary <string, string>();

            foreach (Tuple <TextBox, TextBox> x in _ctrlGroups.Values)
            {
                colInfo[x.Item1.Text] = x.Item2.Text;
            }
            _dbMgr.CreateTable(tbTblName.Text, ref colInfo);
            Close();
        }