WinForm TreeView递归加载

这个其实通俗一点讲就是的树状分支图

首先利用递归添加数据

数据放入 treeView1.Nodes.Add() 中

 public Form3()
{
InitializeComponent(); TreeNode t1 = new TreeNode("中国"); TreeNode t2 = new TreeNode("北京"); TreeNode t3 = new TreeNode("朝阳区"); t2.Nodes.Add(t3); t1.Nodes.Add(t2); treeView1.Nodes.Add(t1);
}

WinForm  TreeView递归加载

然后再用tag 与对象关联的用户定义数据

public partial class Form3 : Form
{
List<China> alllist = new List<China>(); public Form3()
{
InitializeComponent(); alllist = new ChinaData().Select(); TreeNode tn1 = new TreeNode("中国");
tn1.Tag = ""; NodesBind(tn1); treeView1.Nodes.Add(tn1); } public void NodesBind(TreeNode tn)
{
List<China> clist = alllist.Where(r => r.ParentAreaCode == tn.Tag.ToString()).ToList(); foreach (China c in clist)
{
TreeNode tnn = new TreeNode(c.AreaName);
tnn.Tag = c.AreaCode; //递归
NodesBind(tnn); tn.Nodes.Add(tnn);
}
} }
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