TreeView 中单击节点展开子节点事件

Question

点击父节点（而不是点击前面的“+”号）展开它的子节点呢
我用的vs2005
"+" 影响我的树显示效果

Answer 1

用TreeNode.SelectAction = TreeNodeSelectAction.Expand

Answer 2

正确应该是:
NavigateUrl="";
然后设置SelectAction=TreeNodeSelectAction.Explan;

Answer 3

TreeNode node = new TreeNode(folder.FolderName, folderValue);            node.ImageUrl = FOLDER;
            int totalFolder = (folder.Rgt - folder.Lft - 1) / 2;
          
            node.ToolTip = folder.Description;
            if (totalFolder > 0)//含有子文件夹
            {                node.PopulateOnDemand = true;
            }
            else
            {
                node.PopulateOnDemand = false;
            }            node.SelectAction = TreeNodeSelectAction.Expand;            treeView.Nodes.Add(node);