Question

我创建个树形结构，但是怎么就显示不出来子节点！

代码如下 public partial class Form1 : Form
{

private TreeView treeview;
public Form1()
{
InitializeComponent();
create();
}

public void create()
{
TreeNode fNode = new TreeNode("aa");

DevExpress.XtraNavBar.NavBarGroup nbGroup = navBarControl1.Groups.Add();
treeview = new TreeView();
nbGroup.Caption = fNode.Text.ToString();
nbGroup.GroupStyle = DevExpress.XtraNavBar.NavBarGroupStyle.ControlContainer;
treeview.DrawMode = TreeViewDrawMode.Normal;
TreeBindding( fNode);
treeview.ItemHeight = 20;
treeview.Parent = nbGroup.ControlContainer;

}
private void TreeBindding(TreeNode fNode)
{

List<TreeNode> listGN2 = new List<TreeNode>()
{
new TreeNode("AA"),
new TreeNode("BB"),
new TreeNode("CC"),
new TreeNode("DD"),
};

for (int j = 0; j < listGN2.Count; j++)
{

fNode.Nodes.Add(listGN2[j]);

}
我已经改好了this.navBarControl1.Controls.Add（treeview）

Answer 1

TreeNode 是个引用变量，你在前面加个ref试试