winform treeview问题(点击节点节点对应checkbox选中)

Question

   小弟我treeview有checkbox,想点击节点，对应checkbox选中,谢谢

Answer 1

private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
e.Node.Checked = true;
}

Answer 2

  private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {       
            if (e.Node != null)
            {
                e.Node.Checked = true;
            }        }

Answer 3

private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (e.Node.Checked == true)
            {
                e.Node.Checked = false;
            }
            else
            {
                e.Node.Checked = true;
            }
        }