private void chkListTables_ItemCheck(object sender, ItemCheckEventArgs e)
        {
            CheckedListBox currentBox = (CheckedListBox)sender;

            if (e.NewValue.Equals(CheckState.Checked))
            {
                SelectedTables.CreateTableEntry(currentBox.Items[e.Index].ToString());
            }
            else if (e.NewValue.Equals(CheckState.Unchecked))
            {
                SelectedTables.RemoveTable(currentBox.Items[e.Index].ToString());
            }
            chkListFields.Tag = currentBox;
        }