TreeView 节点选择怪问题

Question

刚开始有一个根结点，我用target 和text 代表路径
target 为 D:， text 为test 文件夹名，value设为是目录而非文件
即 d:\test的文件夹<asp:TreeView ID="TreeView1" runat="server" 
        ontreenodepopulate="TreeView1_TreeNodePopulate" 
        onselectednodechanged="TreeView1_SelectedNodeChanged">
        <Nodes>
            <asp:TreeNode Text="test" Value="目录" 
                ImageUrl="~/pictures/panel_file.ico" Target="D:">
            </asp:TreeNode>
        </Nodes>
    </asp:TreeView>

Answer 1

在vs2010中，大家可以建个网页，放上一个treeview控件，加3个lable控件，
treeview 手工加一个节点，target 设为"D:",text设为d:盘的某个文件夹名称，如"test",value 设为“目录",加上代码就可以运行了。
protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
    {
        Label1.Text = TreeView1.SelectedNode.ToolTip;
        Label2.Text = TreeView1.SelectedNode.Text;
        Label3.Text = TreeView1.SelectedNode.Value;
        Label4.Text = TreeView1.SelectedNode.Target;
       
      //  Label1.Text = TreeView1.SelectedNode.Target +"\\"+ TreeView1.SelectedNode.Text;
   
       if (TreeView1.SelectedNode.Value == "目录")
        {
            if (TreeView1.SelectedNode.ChildNodes.Count == 0)
            {
                                string s = TreeView1.SelectedNode.Target + "\\" + TreeView1.SelectedNode.Text;
               // string dirPath = HttpContext.Current.Server.MapPath(s);
                string dirPath = s;
                if (Directory.Exists(dirPath))
                {
                    //获得目录信息 
                    DirectoryInfo dir = new DirectoryInfo(dirPath);
                    //获得目录文件列表 
                    FileInfo[] files = dir.GetFiles();                    foreach (FileInfo fileInfo in files)
                    {                        TreeNode NewNode1 = new TreeNode();
                        NewNode1.Text = fileInfo.Name;
                        NewNode1.Value = fileInfo.Name;
                        NewNode1.Target = s;
                        NewNode1.ToolTip = fileInfo.Name;
                        NewNode1.PopulateOnDemand = false;
                        NewNode1.ImageUrl = "~/pictures/chat_tbex_history_nor.ico";
                        TreeView1.SelectedNode.ChildNodes.Add(NewNode1);
                    }
                    DirectoryInfo[] childpaths = dir.GetDirectories();                    foreach (DirectoryInfo apath in childpaths)
                    {                       TreeNode NewNode = new TreeNode();
                        NewNode.Text = apath.Name;
                        NewNode.Value = "目录";
                        NewNode.ToolTip = apath.Name;
                        NewNode.Target = s;
                        NewNode.ImageUrl = "~/pictures/panel_file.ico";
                        NewNode.PopulateOnDemand = false;
                        TreeView1.SelectedNode.ChildNodes.Add(NewNode);                    }
                }  //             }        }
        else
        {
         //  downLoad(TreeView1.SelectedNode.Target, TreeView1.SelectedNode.Text);
        }
      
    }