asp.net Treeview控件

        string ConnString = @"Data Source=.;Initial Catalog=master;Integrated Security=true;";

        private DataTable dt = null;

        protected void Page_Load(object sender, EventArgs e)

        {

            if (!IsPostBack)

            {

                dt = new DataTable();



                GetMenuToDataTable("select * from treeview", dt);



                BindTree(dt, null, "0");

            }



        }

        private void BindTree(DataTable dtSource, TreeNode parentNode, string parentID)

        {



            DataRow[] rows = dtSource.Select(string.Format("f_ParentNodeId={0}", parentID));



            foreach (DataRow row in rows)

            {



                TreeNode node = new TreeNode();



                node.Text = row["f_Name"].ToString();



                node.Value = row["f_NodeId"].ToString();

                node.NavigateUrl = row["f_Url"].ToString();

                BindTree(dtSource, node, row["f_NodeId"].ToString());



                if (parentNode == null)

                {



                    TreeView1.Nodes.Add(node);



                }



                else

                {



                    parentNode.ChildNodes.Add(node);



                }



            }



        }

        private DataTable GetMenuToDataTable(string query, DataTable dt)

        {



            using (SqlConnection conn = new SqlConnection(ConnString))

            {



                SqlCommand cmd = new SqlCommand(query, conn);



                SqlDataAdapter ada = new SqlDataAdapter(cmd);



                ada.Fill(dt);



            }



            return dt;



        }

View Code

CREATE TABLE treeview

 (

    f_i_autoid INT IDENTITY(1,1),

    f_NodeId INT,

    f_ParentNodeId INT,

    f_Name VARCHAR(20),

    f_Tag VARCHAR(20),

    f_Url NVARCHAR(400),

    f_order INT ,

    f_isHidden TEXT,

    f_datetime DATETIME

 )

INSERT INTO treeview VALUES(1,0,'互联网站','互联网站','#',0,'asdf',GETDATE())

INSERT INTO treeview VALUES(2,1,'百度','互联网站','http://baidu.com',0,'baidu',GETDATE())

INSERT INTO treeview VALUES(3,1,'新浪','互联网站','http://www.sina.com.cn',0,'sina',GETDATE())

INSERT INTO treeview VALUES(4,1,'腾讯','互联网站','http://www.tencent.com',0,'tencent',GETDATE())

INSERT INTO treeview VALUES(5,1,'搜狐','互联网站','http://www.sohu.com',0,'sohu',GETDATE())