protected void DiGuiDataTable(DataTable FromDataTable, DataTable ToDataTable, object pid)
    {
        if (FromDataTable.Select("pid='" + pid + "'").Length > 0)
        {
            foreach (DataRow item in FromDataTable.Select("pid='" + pid + "'"))
            {
                ToDataTable.Rows.Add(item.ItemArray);
                DiGuiDataTable(FromDataTable, ToDataTable, item["id"]);
            }
        }
    }

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