add subitems to checklistbox

[yolip]

Hi, I would like to make a treeview like checkedlistbox, but with the checkbox in front of every items. The following code is only produce one level of the list, but i need multiple levels.
for (int icount = 0; icount < dtMenu.Rows.Count; icount++)
{

chkLstPermission.Items.Add(dtMenu.Rows[icount]["Menu_Name"].ToString());

}

Please help.
Thanks