初始化资源管理器 winform

这是初始化资源管理器     0，1表示图片的索引 用到了 imagelistDataTable ds;            string strsql = "select id,name from hospital order by number";            SqlDB db = new SqlDB();            ds = db.FillDt(strsql);           // hosid = Convert.ToInt32(ds.Rows[0]["id"]);            foreach (DataRow dr in ds.Rows)            {                TreeNode newNode = new TreeNode(dr[1].ToString(),0,1);                TV.Nodes.Add(newNode);                DataTable dy;                string strql = "select id,name from department where hosId=" + dr[0].ToString() + " order by number";                dy = db.FillDt(strql);                foreach (DataRow du in dy.Rows)                {                    TreeNode Node = new TreeNode(du[1].ToString(), 0, 1);                    newNode.Nodes.Add(Node);                    DataTable dq;                    string strl = "select * from doctor where depId=" + du[0].ToString() + "order by number";                    dq = db.FillDt(strl);                    foreach (DataRow dm in dq.Rows)                    {                        TreeNode Nde = new TreeNode(dm[2].ToString(), 0, 1);                        Node.Nodes.Add(Nde);                    }                }            }