C# treeView复选框问题

[低调的感觉]

我想在单击button控件时
要是treeView复选框被选中
就把√去掉
没有则不动
这应该怎么实现

[h_w_king]

private void button1_Click(object sender, EventArgs e)
{
if (this.treeView1.SelectedNode != null)
{

this.treeView1.SelectedNode.Checked = !this.treeView1.SelectedNode.Checked;
}
}

[zgke]

private void SetTreeNodeChk(TreeNode p_TreeNode, bool p_Bool)
{
p_TreeNode.Checked = p_Bool;
foreach (TreeNode _TreeNode in p_TreeNode.Nodes)
{
_TreeNode.Checked = p_Bool;
SetTreeNodeChk(_TreeNode, p_Bool);
}
}


使用

for (int i = 0; i != treeView1.Nodes.Count; i++)
{
SetTreeNodeChk(treeView1.Nodes[i], true); //true 选择 //false 不选择
}