ddlbig.Items.Add(new ListItem("新闻分类", "0"));

newclass(pub.getpower(), "146", "");




public void newclass(DataTable dtMenu, string parentNo,string str)

{

string expression = "parentid= " + parentNo;

DataRow[] foundRows;

DataTable newdt = new DataTable();

foundRows = dtMenu.Select(expression);

str = str + "　";//实现树形

for (int i = 0; i < foundRows.Length; i++)

{

newdt.ImportRow((DataRow)foundRows[i]);

ddlbig.Items.Add(new ListItem(str + "|--" + foundRows[i]["menuname"].ToString(), foundRows[i]["No"].ToString()));

newclass(dtMenu, foundRows[i]["No"].ToString(), str);

}

}