创建一个类 TreeView2
namespace System.Windows.Forms
{public class TreeView2 : TreeView{protected override void WndProc(ref Message m){if (m.Msg != 0x203){base.WndProc(ref m);}}}
}然后前台放置一个TreeView控件。名叫：treeView1
后台代码：
private void Form3_Load(object sender, EventArgs e){//测试数据TreeNode t = new TreeNode();t.Text = "所有权限";TreeNode t1 = new TreeNode();t1.Text = "会员消费";t.Nodes.Add(t1);for (int i = 0; i < 100; i++){TreeNode t2 = new TreeNode();t2.Text = "Test" + i;t1.Nodes.Add(t2);}this.treeView1.CheckBoxes = true;this.treeView1.Nodes.Add(t);}private void CheckAllChildNodes(TreeNode treeNode, bool nodeChecked){foreach (TreeNode node in treeNode.Nodes){node.Checked = nodeChecked;if (node.Nodes.Count > 0){this.CheckAllChildNodes(node, nodeChecked);}}}private void treeView1_AfterCheck(object sender, TreeViewEventArgs e){if (e.Action != TreeViewAction.Unknown){if (e.Node.Nodes.Count > 0){this.CheckAllChildNodes(e.Node, e.Node.Checked);}}}最后，将Form3.Designer.cs 文件中的 TreeView 全部替换成我们的 TreeView2
