treeview空间的属性问题

Question

addrange是添加节点的集合吗？
怎么老添加失败呢
TreeView TV = new TreeView();
            TreeNode t1 = TV.Nodes.Add("节点1");
            TreeNode t2 = TV.Nodes.Add("节点2");
            TreeNode[] node = new TreeNode[] { t1, t2 };
            treeView1.Nodes.AddRange(node);
谁能帮我写个正确的呀

Answer 1

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using myLib;namespace CN.Web
{
    public partial class LeftTreeView : System.Web.UI.Page
    {
        protected DataTable dataTbl1, dataTbl2;
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                 string wherstr="";
                 if (Request.Cookies["Username"].Value.ToString().ToLower () == "admin" && Request.Cookies["Password"].Value.ToString() == "1")
                 {
                     wherstr = "";
                 }
                 else
                 {
                     if (Session["RoleId"] != null)
                     {
                         string roleid = Session["RoleId"].ToString();
                         wherstr = " where page_id in(select page_id from RolePageRelationship where Role_id=" + roleid + ")";
                     }
                 }    
                
                InitRootNodeDataTable(wherstr);
                initTree(dataTbl1);
                //tvCategory.CollapseAll();
            }
        }
        /// <summary>
        /// 初始化 RootNode DataTable
        /// </summary>
        private void InitRootNodeDataTable(string wherstr)
        {
            dataTbl1 = new DataTable();            dataTbl1 = DbAccess.GetDS("select * from page " + wherstr).Tables[0];
            //读取并将公共的分类信息添加到数据集中
            dataTbl1.TableName = "TreeView";
        }        /// <summary>
        /// 初始化树
        /// </summary>
        /// <param name="dt">取得所有的分类</param>
        private void initTree(DataTable dt)
        {
            this.tvCategory.Nodes.Clear();//先清理原先的
            if (dt != null && dt.Rows.Count == 0) return;
            DataRow[] Rows = dt.Select("Page_parent=0 ");
            if (Rows.Length == 0) return;
            foreach (DataRow row in Rows)
            {
                TreeNode tNode = new TreeNode();
                tNode.Value = row["Page_id"].ToString();
                tNode.Text = row["Page_name"].ToString();
                //tNode.NavigateUrl = "";
                //tNode.Target = "MainFrameBS";//指向父窗体右边的那个iframe                this.tvCategory.Nodes.Add(tNode);
                tNode.Expanded = true;
                createChildNode(tNode, tNode.Value);
            }            ////添加一级“未分类”节点
            //TreeNode tNode1 = new TreeNode();
            //tNode1.Value = "-1";
            //tNode1.Text = "未分类";
            //tNode1.NavigateUrl = "BasicInfoConfig.aspx?Class_ID=" + tNode1.Value + "";
            //tNode1.Target = "MainFrameBS";//指向父窗体右边的那个iframe            //this.tvCategory.Nodes.Add(tNode1);
            //tNode1.Expanded = true;
        }
        /// <summary>
        /// 创建子节点
        /// </summary>
        /// <param name="node"></param>
        /// <param name="strParentNo"></param>
        private void createChildNode(TreeNode node, string strParentNo)
        {
            //string parentId="";
            DataRow[] Rows = this.dataTbl1.Select("Page_parent='" + strParentNo + "' and Page_parent<>0");
            foreach (DataRow row in Rows)
            {
                TreeNode childNode = new TreeNode();                childNode.Value = row["Page_id"].ToString();
                childNode.Target = "mainFrame";//指向父窗体右边的那个iframe
                childNode.Text = row["Page_name"].ToString();
                childNode.NavigateUrl = "~/"+row["Page_url"].ToString(); ;                node.ChildNodes.Add(childNode);                createChildNode(childNode, row["Page_id"].ToString());
            }
        }
       
    }
}

Answer 2

查下msdn，上面应该有示例代码

Answer 3

错了， t1,t2是tv的node,
treeview1中加的是别的tv的node,

Answer 4

treeView1.Nodes.AddRange(new TreeNode[] {
    new TreeNode ( /* 参数 */ ),
    new TreeNode () { /* 属性 */ },
    ...
});