winform 中 如何给treeview 添加 子节点

Question

rt~

Answer 1

TreeNode newtn = new TreeNode("名称");
this.TreeVIew.Node.add(newtn)

Answer 2

treenode tn = new treenode();
tn.tag="";
tn.text="";
treeview.nodes.add(tn);

Answer 3

这个是从数据库数据添加的树
private void InitTree(DataSet ds)
        {
            tmp = new TreeNode("客户类型");
            this.treeView1.Nodes.Add(tmp);
            for (int i = 0; ds.Tables["clientType"].Rows.Count > i; i++)
            {
                TreeNode node = new TreeNode(ds.Tables["clientType"].Rows[i]["clientTypeName"].ToString());
                node.Tag = ds.Tables["clientType"].Rows[i]["id"].ToString();
                tmp.Nodes.Add(node);
            }
        }
这个是手动来的
private void InitTree(DataSet ds)
        {
//这个是根
          TreeNode  tmp = new TreeNode("客户类型");
          this.treeView1.Nodes.Add(tmp);
          TreeNode  node1 = new TreeNode("同学");
          TreeNode  node2 = new TreeNode("同事");
          TreeNode  node3 = new TreeNode("朋友");
          tmp.Nodes.Add(node1 );
          tmp.Nodes.Add(node2 );
          tmp.Nodes.Add(node3 );
            }
        }

Answer 4

System.Windows.Forms.TreeNode treeNode1 = new System.Windows.Forms.TreeNode("节点3");
            System.Windows.Forms.TreeNode treeNode2 = new System.Windows.Forms.TreeNode("节点4");
            System.Windows.Forms.TreeNode treeNode3 = new System.Windows.Forms.TreeNode("节点0", new System.Windows.Forms.TreeNode[] {
            treeNode1,
            treeNode2});
            System.Windows.Forms.TreeNode treeNode4 = new System.Windows.Forms.TreeNode("节点1");
            System.Windows.Forms.TreeNode treeNode5 = new System.Windows.Forms.TreeNode("节点2")
 this.treeView1.Name = "treeView1";
            treeNode1.Name = "节点3";
            treeNode1.Text = "节点3";
            treeNode2.Name = "节点4";
            treeNode2.Text = "节点4";
            treeNode3.Name = "节点0";
            treeNode3.Text = "节点0";
            treeNode4.Name = "节点1";
            treeNode4.Text = "节点1";
            treeNode5.Name = "节点2";
            treeNode5.Text = "节点2";
            this.treeView1.Nodes.AddRange(new System.Windows.Forms.TreeNode[] {
            treeNode3,
            treeNode4,
            treeNode5});

Answer 5

TreeNode tn = new TreeNode("名称"); 
TreeView.Nodes.add(tn);
或者
TreeNode tn = new TreeNode("名称");
TreeNode tnParent = TreeView.SelectedNode;//或你要添加的子节点的父节点
tnParent.Nodes.add(tn);

Answer 6

TreeNode n= new TreeNode("1"); 
this.treeView1.Nodes.Add(n);  
TreeNode node1 = new TreeNode("11"); 
n.Nodes.Add(node1);

Answer 7

添加一级的
treenode tn = new treenode();
tn.tag="";
tn.text="";
treeview.nodes.add(tn);
二级的
treenode tn = new treenode();
tn.tag="";
tn.text="";
treeview.Nodes[0].add(tn);相信三级的四级的大哥也会了吧