点击TreeView得到节点信息

1. 在pageload函数中

        if(!IsPostBack)
            {
                Microsoft.Web.UI.WebControls.TreeNode rootnode = new Microsoft.Web.UI.WebControls.TreeNode();
                rootnode.Expanded = true;        //所有结点展开
                rootnode.Text = "root";
                treCroLinMuti.Nodes.Add(rootnode);
                CreateTree(0, rootnode);
                treCroLinMuti.Attributes.Add("OnClick", "OnTreeNodeChecked(event)");

            }


2.   生成树的函数
        private void CreateTree(int belong, Microsoft.Web.UI.WebControls.TreeNode rootnode)
        {
            DataSet ds = new DataSet();             
            ds = GetDataSource(belong);            

            foreach(DataRow dr in ds.Tables[0].Rows)
            {
                Microsoft.Web.UI.WebControls.TreeNode treenode = new Microsoft.Web.UI.WebControls.TreeNode();
                treenode.Text = dr["ColumnName"].ToString().Trim();
                treenode.ID = dr["ColumnId"].ToString().Trim();
                //treenode.CheckBox = true;
                treenode.Expanded = true;
                rootnode.Nodes.Add(treenode);

                int id = int.Parse(dr["ColumnId"].ToString().Trim());
                CreateTree(id, treenode);
            }
        }

        private DataSet GetDataSource(int ColumnID)
        {
            DataSet columnInfo = new DataSet();

            UniskPortal.BLL.MDS.CrossLink CrossLinkStat= new UniskPortal.BLL.MDS.CrossLink();
            columnInfo = CrossLinkStat.GetCrossLink(ColumnID);
            return  columnInfo;
        }

3 点node的事件响应

        private void treCroLinMuti_SelectedIndexChange(object sender, Microsoft.Web.UI.WebControls.TreeViewSelectEventArgs e)
        {
            //string id = this.treeView1.SelectedNodeIndex.ToString();

            Microsoft.Web.UI.WebControls.TreeNode anode = treCroLinMuti.GetNodeFromIndex(treCroLinMuti.SelectedNodeIndex);
            string a = anode.ID;
            try 
            {
                Convert.ToInt32(a);
            }
            catch
            {
                a="0";
            }

            Session["ColumnCrossLinkID"] = a;     //得到结点的id值


                        //下面为点结点后,要做的事情
//            //树页面的txtbox
//            this.Page.RegisterStartupScript("upAlert","<script language=javascript>document.getElementById('_ctl0_MainContent_ColumnListUC1_tbx_ColumnID').value='"+a+"';</script>");
//            Response.Redirect("ViewCrossLink.aspx?ColumnId="+a);
            }



4   加入句柄

            this.treCroLinMuti.SelectedIndexChange += new Microsoft.Web.UI.WebControls.SelectEventHandler(this.treCroLinMuti_SelectedIndexChange);